Module: DcApplicationHelper

Included in:
BrowseModelsControl, DcAdRenderer, DcBigMenuRenderer, DcCommonRenderer, DcMenuRenderer, DcPageRenderer, DcPartRenderer, DcPieceRenderer, DcPollRenderer, DcSimpleMenuRenderer
Defined in:
app/helpers/dc_application_helper.rb

Overview

DcApplicationHelper defines common helper methods for using with DRG CMS.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#design ⇒ Object (readonly)

design document



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# File 'app/helpers/dc_application_helper.rb', line 35

def design
  @design
end

#form ⇒ Object (readonly)

form object



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# File 'app/helpers/dc_application_helper.rb', line 43

def form
  @form
end

#ids ⇒ Object (readonly)

ids url parameter



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# File 'app/helpers/dc_application_helper.rb', line 41

def ids
  @ids
end

#options ⇒ Object (readonly)

options object



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# File 'app/helpers/dc_application_helper.rb', line 45

def options
  @options
end

#page ⇒ Object (readonly)

page document



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# File 'app/helpers/dc_application_helper.rb', line 33

def page
  @page
end

#page_title ⇒ Object

page title



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# File 'app/helpers/dc_application_helper.rb', line 50

def page_title
  @page_title
end

#part ⇒ Object (readonly)

part



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# File 'app/helpers/dc_application_helper.rb', line 47

def part
  @part
end

#parts ⇒ Object

all parts read from page, design, …



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# File 'app/helpers/dc_application_helper.rb', line 52

def parts
  @parts
end

#site ⇒ Object (readonly)

site document



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# File 'app/helpers/dc_application_helper.rb', line 37

def site
  @site
end

#tables ⇒ Object (readonly)

tables url parameter



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# File 'app/helpers/dc_application_helper.rb', line 39

def tables
  @tables
end

Instance Method Details

#_origin ⇒ Object

When @parent is present then helper methods are called from parent class otherwise from self.



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# File 'app/helpers/dc_application_helper.rb', line 59

def _origin #:nodoc:
  @parent ? @parent : self  
end

#dc_add2_record_cookie(hash) ⇒ Object

Will add data to record cookie. Record cookie is used to preload some data on next create action. Create action will look for cookies and if found initialize fields on form with matching name to value found in cookie data.

Example:

 kukis = {'dc_page.dc_design_id' => @page.dc_design_id,
          'dc_page.dc_menu_id' => @page.menu_id)
dc_add2_record_cookie(kukis)



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# File 'app/helpers/dc_application_helper.rb', line 1009

def dc_add2_record_cookie(hash)
  kukis = if @parent.cookies[:record] and @parent.cookies[:record].size > 0
    Marshal.load(@parent.cookies[:record])
  else
    {}
  end
  hash.each {|k,v| kukis[k] = v }
  @parent.cookies[:record] = Marshal.dump(kukis)
end

#dc_big_table(key) ⇒ Object

Returns key defined in DcBigTable as array of choices for use in select fields. DcBigTable can be used like a key/value store for all kind of predefined values which can be linked to site and or locale.

Parameters:

key

String. Key name to be searched in dc_big_tables documents.

Example:

10:
  name: category
  type: select
  eval: dc_big_table 'categories_for_page'  # as used on form

Returns: Array of choices ready for select field.



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# File 'app/helpers/dc_application_helper.rb', line 1168

def dc_big_table(key)
  ret = []
  bt = DcBigTable.find_by(key: key, site: dc_get_site._id, active: true)
  bt = DcBigTable.find_by(key: key, site: nil, active: true) if bt.nil?
  return ret if bt.nil? 
# 
  locale = I18n.locale.to_s
  bt.dc_big_table_values.each do |v|   # iterate each value
    next unless v.active
    desc = ''
    v.dc_big_table_locales.each do |l| # iterate each locale
      if l.locale == locale
        desc = l.description
        break
      end
    end
    desc = v.description if desc.blank? # get description from value description
    desc = v.value if desc.blank?       # still blank. Use value as description
    ret << [desc, v.value] 
  end
  ret
end

#dc_choices4(model, name, id = '_id', options = {}) ⇒ Object

Returns choices for select input field when choices are generated from all documents in collection.

Parameters:

model

String. Collection (table) name in lowercase format.

name

String. Field name containing description text.

id

String. Field name containing id field. Default is ‘_id’

options

Hash. Various options. Currently site: (:only, :with_nil, :all) is used.

Will return only documents belonging to current site, also with site not defined, or all documents.

Example (as used in forms):

50:
  name: dc_poll_id
  type: select
  eval: dc_choices4('dc_poll','name','_id')



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# File 'app/helpers/dc_application_helper.rb', line 966

def dc_choices4(model, name, id='_id', options = {})
  model = model.classify.constantize
  qry   = model.only(id, name)
  if (param = options[:site])
    sites = [dc_get_site.id] unless param == :all
    sites << nil if param == :with_nil 
    qry   = qry.in(dc_site_id: sites) if sites
  end
  qry   = qry.and(active: true) if model.method_defined?(:active)
#  qry   = qry.sort(name => 1) 
#  choices = []
#  qry.each {|v| choices << [ v[name], v[id] ] }
  choices = qry.inject([]) {|result,e| result << [ e[name], e[id] ]}
  choices.sort_alphabetical_by(&:first) # use UTF-8 sort
end

#dc_choices4_all_collections ⇒ Object

Returns list of all collections (tables) as array of choices for usage in select fields. List is collected from cms_menu.yml files and may not include all collections used in application. Currently list is only used for helping defining collection names on dc_permission form.

Example (as used in forms):

form:
  fields:
    10:
      name: table_name
      type: text_with_select
      eval: dc_choices4_all_collections



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# File 'app/helpers/dc_application_helper.rb', line 866

def dc_choices4_all_collections
  choices = {}
  DrgCms.paths(:forms).reverse.each do |path|
    filename = "#{path}/cms_menu.yml"
    next unless File.exist?(filename)
#
    menu = YAML.load_file(filename) rescue nil      # load menu
    next if menu.nil? or !menu['menu']              # not menu or error
    menu['menu'].each do |section|
      next unless section.last['items']             # next if no items
      section.last['items'].each do |k, v|          # look for caption and 
        key = v['table']
        choices[key] ||= "#{key} - #{t(v['caption'], v['caption'])}" 
      end
    end
  end  
  choices.invert.to_a.sort # hash has to be inverted for values to be returned right
end

#dc_choices4_cmsmenu ⇒ Object

Returns choices for creating collection edit select field on CMS top menu.



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# File 'app/helpers/dc_application_helper.rb', line 905

def dc_choices4_cmsmenu()
  menus = {}
  DrgCms.paths(:forms).reverse.each do |path|
    filename = "#{path}/cms_menu.yml"
    next unless File.exist?(filename)
    menu = YAML.load_file(filename) rescue nil      # load menu
    next if menu.nil? or !menu['menu']              # not menu or error
    menus = forms_merge(menu['menu'], menus)        # ignore top level part
 end
#
  html = '<ul>'
  menus.to_a.sort.each do |one_menu|    # sort menus, result is array of sorted hashes
    menu = one_menu[1]                  # value is the second (1) element of array
    next unless menu['caption']
    html << "<li class=\"cmsedit-top-level-menu\">#{fa_icon(menu['icon'])}#{t(menu['caption'])}<ul>"
    menu['items'].to_a.sort.each do |item|          # as above. sort items first 
      value = item[1]
      opts = { controller: value['controller'], 
               action: value['action'], 
               table: value['table'],
               formname: value['formname'] || value['table'],
               target: value['target'] || 'iframe_cms'               
             }
      html << "<li>#{dc_link_to(t(value['caption']), value['icon'] || '', opts)}</li>"      
    end   
    html << '</ul></li>'  
  end
  html
end

#dc_choices4_field(model, field) ⇒ Object

Return choices for field in model if choices are defined in localization text.

Parameters:

model

String. Table (collection) model name (lowercase).

field

String. Field name used.

Example:

dc_choices4_field('dc_user', 'state' )

Returns: Array. Choices for select input field



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# File 'app/helpers/dc_application_helper.rb', line 723

def dc_choices4_field(model, field)
  c = t('helpers.label.' + model + '.choices4_' + field )
  return ['error'] if c.match( 'translation missing' )
  c.chomp.split(',').inject([]) {|r,v| r << v.split(':') }
end

#dc_choices4_folders_list ⇒ Object

Returns list of directories as array of choices for use in select field on folder permission form. Directory root is determined from dc_site.files_directory field.



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# File 'app/helpers/dc_application_helper.rb', line 939

def dc_choices4_folders_list
  public = File.join(Rails.root,'public')
  home   = File.join(public,dc_get_site.files_directory)
  choices = Dir.glob(home + '/**/*/').select { |fn| File.directory?(fn) }
  choices << home # add home
  choices.collect! {|e| e.gsub(public,'')} # remove public part
  choices.sort
end

#dc_choices4_menu ⇒ Object

Returns list of choices for selection top level menu on dc_page form. Used for defining which top level menu will be highlited when page is displayed.

Example (as used in forms):

20:
  name: menu_id
  type: select
  eval: dc_choices4_menu



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# File 'app/helpers/dc_application_helper.rb', line 992

def dc_choices4_menu
  m_clas = dc_get_site.menu_class
  m_clas = 'DcSimpleMenu' if m_clas.blank?
  klass  = m_clas.classify.constantize
  klass.choices4_menu(dc_get_site)
end

#dc_choices4_site_policies ⇒ Object

Return array of policies defined in a site document formated to be used as choices for select field. Method is used for selecting site policy where policy for displaying data is required.

Example (as used in forms):

name: policy_id
type: select
eval: dc_choices4_site_policies
html:
  include_blank: true



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# File 'app/helpers/dc_application_helper.rb', line 848

def dc_choices4_site_policies()
  site = dc_get_site()
  site.dc_policies.all.inject([]) { |r, policy| r << [ policy.name, policy.id] if policy.active }
end

#dc_date_time(value, format) ⇒ Object 



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# File 'app/helpers/dc_application_helper.rb', line 801

def dc_date_time(value, format) #:nodoc:
  dc_deprecate 'dc_date_time will be deprecated! Use dc_format_date_time instead.'
  dc_format_date_time(value, format)
end

#dc_deprecate(msg) ⇒ Object

Writes out deprication msg. It also adds site_name to message, so it is easier to find where the message is comming from.



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# File 'app/helpers/dc_application_helper.rb', line 67

def dc_deprecate(msg)
  logger.info "#{dc_get_site.name}: #{msg}"
end

#dc_dont?(what, default = false) ⇒ Boolean

Returns true if parameter has value of 0, false, no, none or -. Returns default if parameter has nil value.

Parameters:

what

String/boolean/Integer.

default

Default value when what has value of nil. False by default.

Example:

dc_dont?('none') # => true
dc_dont?('-')    # => true
dc_dont?(1)      # => false

Returns:

  • (Boolean) 


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# File 'app/helpers/dc_application_helper.rb', line 1125

def dc_dont?(what, default=false)
  return default if what.nil?
  %w(0 no - false none).include?(what.to_s.downcase.strip)
end

#dc_edit_mode? ⇒ Boolean

Checks if CMS is in edit mode (CMS menu bar is visible).

Returns: Boolean. True if in edit mode

Returns:

  • (Boolean) 


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# File 'app/helpers/dc_application_helper.rb', line 455

def dc_edit_mode?
  _origin.session[:edit_mode] > 1
end

#dc_edit_title ⇒ Object

Creates title for cmsedit edit action dialog.

Returns: String. HTML code for title.



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# File 'app/helpers/dc_application_helper.rb', line 266

def dc_edit_title()
  title = @form['form']['title']
# defined as form:title:edit
  if title and title['edit'] and !@form['readonly']
    t( title['edit'], title['edit'] )
  elsif title and title['show'] and @form['readonly']
    t( title['show'], title['show'] )
  else
# concatenate title 
    c = (@form['readonly'] ? t('drgcms.show') : t('drgcms.edit')) + " : "
    c << (@form['title'] ? t( @form['title'], @form['title'] ) : t_tablename(@form['table'])) + ' : '
    title = (title and title['field']) ? title['field'] : @form['form']['edit_title']
    dc_deprecate('form:edit_title will be deprecated. Use form:title:field instead.') if @form['form']['edit_title']
#
    c << "#{@record[ title ]} : " if title and @record.respond_to?(title)
    c << @record._id if @record
  end
  c
end

#dc_error_messages_for(doc) ⇒ Object

Returns validation error messages for the document (record) formatted for display on message div.

Parameters:

doc

Document. Document record which will be checked for errors.

Returns: String. HTML code formatted for display.



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# File 'app/helpers/dc_application_helper.rb', line 432

def dc_error_messages_for(doc)
  return '' unless doc.errors.any?
  msgs = ''
  doc.errors.each do |attribute, errors_array|
    label = t("helpers.label.#{decamelize_type(doc.class)}.#{attribute}", attribute)
    msgs << "<li>#{label} : #{errors_array}</li>"
  end
  
c = "<div class=\"dc-form-error\"> \n  <h2>\#{t('drgcms.errors_no')} \#{doc.errors.size}</h2>  \n  <ul>\#{msgs}</ul>  \n</div>\n"
  c.html_safe
end

#dc_flash_messages ⇒ Object

Returns flash messages formatted for display on message div.

Returns: String. HTML code formatted for display.



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# File 'app/helpers/dc_application_helper.rb', line 379

def dc_flash_messages()
  err  = _origin.flash[:error]
  war  = _origin.flash[:warning]
  inf  = _origin.flash[:info]
  note = _origin.flash[:note]
  unless err.nil? and war.nil? and inf.nil? and note.nil?
    c = ''
    c << "<div class=\"dc-form-error\">#{err}</div>" if err
    c << "<div class=\"dc-form-warning\">#{war}</div>" if war
    c << "<div class=\"dc-form-info\">#{inf}</div>" if inf
    c << note if note
    _origin.flash[:error]   = nil
    _origin.flash[:warning] = nil
    _origin.flash[:info]    = nil
    _origin.flash[:note]    = nil

    c.html_safe
  end
end

#dc_format_date_time(value, format = nil) ⇒ Object

Returns html code for displaying date/time formatted by strftime. Will return ” if value is nil.

Parameters:

value

Date/DateTime/Time.

format

String. strftime format mask. Defaults to locale’s default format.



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# File 'app/helpers/dc_application_helper.rb', line 792

def dc_format_date_time(value, format=nil)
  return '' if value.nil?
  format ||= value.class == Date ? t('date.formats.default') : t('time.formats.default')
  value.strftime(format)
end

#dc_get_site ⇒ Object

Parse site name from url and return dc_site document. Site document will be cached in If not in production environment and site document is not found method will search for ‘test’ document and return dc_site document found in alias_for field.

Returns: DCSite. Site document.



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# File 'app/helpers/dc_application_helper.rb', line 816

def dc_get_site()
  return @site if @site # already cached
#
  req = _origin.request.url # different when called from renderer
  uri  = URI.parse(req)
  @site = DcSite.find_by(name: uri.host)
# Site can be aliased
  if @site and !@site.alias_for.blank?
    @site = DcSite.find_by(name: @site.alias_for)
  end
# Development environment. Check if site with name test exists and use 
# alias_for field as pointer to real site name.
  if @site.nil? and ENV["RAILS_ENV"] != 'production'
    @site = DcSite.find_by(name: 'test')
    @site = DcSite.find_by(name: @site.alias_for) if @site
  end 
  @site = nil if @site and !@site.active # site is disabled
  @site
end

#dc_icon4_boolean(value) ⇒ Object

Return html code for icon presenting boolean value. Icon is a picture of checked or unchecked box.

Parameters:

value

Boolean.

Example:

# usage from program
dc_icon4_boolean(some_value)

# usage from form description
columns:
  10: 
    name: active
    eval: dc_icon4_boolean



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# File 'app/helpers/dc_application_helper.rb', line 781

def dc_icon4_boolean(value)
  dc_dont?(value, true) ? fa_icon('square-o lg') : fa_icon('check-square-o lg') 
end

#dc_iframe_edit(table, opts = {}) ⇒ Object

Will return html code required for load DRG form into iframe. If parameters are passed to method iframe url will have initial value and thus enabling automatic form load on page display.

Parameters:

table

String: Collection (table) name used to load initial form.

opts

Hash: Optional parameters which define url for loading DRG form.

These parameters are :action, :oper, :table, :formname, :id, :readonly

Example:

# just iframe code
<%= dc_iframe_edit(nil) %>
# load note form for note collection
<%= dc_iframe_edit('note') %>
# on register collection use reg_adresses formname to display data with id @register.id
<%= dc_iframe_edit('register', action: :show, formname: 'reg_adresses', readonly: 1, id: @register.id ) %>

Returns: Html code for edit iframe



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# File 'app/helpers/dc_application_helper.rb', line 1212

def dc_iframe_edit(table, opts={})
  ret = if params.to_unsafe_h.size > 2 and table  # controller, action, path is minimal
    params[:controller] = 'cmsedit'
    params[:action]     = (params[:oper] and (params[:oper] == 'edit')) ? 'edit' : 'index'
    params[:action]     = opts[:action] unless params[:oper]
    params[:table]      ||= table 
    params[:formname]   ||= opts[:formname] || table 
    params[:id]         ||= params[:idp] || opts[:id]
    params[:readonly]   ||= opts[:readonly]
    params[:path]       = nil
    params.permit! # rails 5 request
    "<iframe id='iframe_edit' name='iframe_edit' src='#{url_for params}'></iframe>"
  else
    "<iframe id='iframe_edit' name='iframe_edit'></iframe>"
  end
  ret.html_safe
end

#dc_internal_var(object, var_name) ⇒ Object

Will return value from internal DRG variables. This objects can be params, session, …

Parameters:

object

String: Internal object holding variable. Current values can be session, params, site, page

var_name

String: Variable name (:user_name, ‘user_id’, …)

Example:

# called when constructiong iframe for display
dc_internal_var(session, :user_id)
dc_internal_var(params, :some_external_parameter)
dc_internal_var(site, :name)

Returns: Value of variable or nil when not found



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# File 'app/helpers/dc_application_helper.rb', line 1247

def dc_internal_var(object, var_name)
  begin
    case
      when object == 'session' then _origin.session[var_name]
      when object == 'params'  then _origin.params[var_name]
      when object == 'site'    then _origin.dc_get_site.send(var_name)
      when object == 'page'    then _origin.page.send(var_name)
    else
      'VARIABLE: UNKNOWN OBJECT'
    end
  rescue Exception => e
    Rails.logger.debug "Method dc_internal var. Runtime error. #{e.message}"
    'VARIABLE: ERROR'
  end
end

#dc_label_for(input_html, label) ⇒ Object

Formats label and html input code for display on edit form.

Parameters:
[input_html] String. HTML code for data input field.
[label] String. Input field label.



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# File 'app/helpers/dc_application_helper.rb', line 318

def dc_label_for(input_html, label)
  c ="<tr>\n  <td class=\"dc-edit-label\">\#{label}</td>\n  <td class=\"dc-edit-field\">\#{input_html}</td>\n</tr>\n"
  c.html_safe
end

#dc_limit_string(string, size) ⇒ Object

Truncates string length maximal to the size required and takes care, that words are not broken in middle. Used for output text summary with texts that can be longer then allowed space.

Parameters:

string

String of any size.

size

Maximal size of the string to be returned.

Example:

dc_limit_string(description, 100)

Returns: String, truncated to required size. If string is truncated ‘…’ will be added to the end.



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# File 'app/helpers/dc_application_helper.rb', line 1144

def dc_limit_string(string, size)
  return string if string.size < size
  string = string[0,size]
  string.chop! until (string[-1,1] == ' ' or string == '')
  string << '...'
end

#dc_link_for_create(opts) ⇒ Object

Will create HTML code required to create new document.

Parameters:

opts

Hash. Optional parameters for url_for helper. These options must provide at least table and formname

parameters.

Example:

if @opts[:edit_mode] > 1
  opts = {table: 'dc_page;dc_part', formname: 'dc_part', ids: @doc.id }
  html << dc_link_for_create( opts.merge!({title: 'Add new part', 'dc_part.name' => 'initial name', 'dc_part.order' => 10}) ) 
end

Returns: String. HTML code which includes add image and javascript to invoke new document create action.



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# File 'app/helpers/dc_application_helper.rb', line 475

def dc_link_for_create(opts)
  opts.stringify_keys!  
  title = opts.delete('title') #
  title = t(title, title) if title
  target = opts.delete('target')  || 'iframe_cms'
  opts['formname']   ||= opts['table'].split(';').last
  opts['action']       = 'new'
  opts['controller'] ||= 'cmsedit'
  js = "$('##{target}').attr('src', '#{_origin.url_for(opts)}'); return false;"
  dc_link_to(nil, _origin.fa_icon('plus-circle lg', class: 'dc-inline-link'), '#',
             { onclick: js, title: title, alt: 'Create'}).html_safe
end

#dc_link_for_edit(opts) ⇒ Object

Will create HTML code required to edit document.

Parameters:

opts

Hash. Optional parameters for url_for helper. These options must provide

at least table, formname and id parameters. Optional title, target and icon parameters can be set.

Example:

html << dc_link_for_edit( @options ) if @opts[:edit_mode] > 1

Returns: String. HTML code which includes edit image and javascript to invoke edit document action.



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# File 'app/helpers/dc_application_helper.rb', line 502

def dc_link_for_edit(opts)
  opts.stringify_keys!  
  title  = opts.delete('title') #
  title  = t(title)
  target = opts.delete('target') || 'iframe_cms'
  icon   = opts.delete('icon') || 'edit lg'
  opts['controller'] ||= 'cmsedit'
  opts['action']     ||= 'edit'
  opts['formname']   ||= opts['table'].to_s.split(';').last
  js  = "$('##{target}').attr('src', '#{_origin.url_for(opts)}'); return false;"
  dc_link_to(nil, _origin.fa_icon(icon, class: 'dc-inline-link'), '#', 
             { onclick: js, title: title, alt: 'Edit'})
end

#dc_link_for_edit1(opts, link_text) ⇒ Object

Create one option in page edit link. Subroutine of dc_page_edit_menu.



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# File 'app/helpers/dc_application_helper.rb', line 534

def dc_link_for_edit1(opts, link_text) #:nodoc:
  icon = opts.delete('icon')
  url  = _origin.url_for(opts)
  "<li><div class='drgcms_popmenu_item' style='cursor: pointer;' data-url='#{url}'>
#{_origin.fa_icon(icon)} #{link_text}</div></li>\n"
end

#dc_link_menu_tag(title) {|html| ... } ⇒ Object

Create edit link with edit picture. Subroutine of dc_page_edit_menu.

Yields:

  • (html) 


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# File 'app/helpers/dc_application_helper.rb', line 519

def dc_link_menu_tag(title) #:nodoc:
  html ="  <dl>\n  <dt><div class='drgcms_popmenu' href=\"#\">\n   \#{_origin.fa_icon('edit lg', class: 'dc-inline-link', title: title)}</div></dt>\n    <dd>\n    <ul class=' div-hidden drgcms_popmenu_class'> \n"
  yield html
  html << "</ul></dd></dl>"
end

#dc_link_to(caption, icon, parms, rest = {}) ⇒ Object

Similar to rails link_to, but also takes care of link icon, translation, …



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# File 'app/helpers/dc_application_helper.rb', line 348

def dc_link_to(caption, icon, parms, rest={})
  if parms.class == Hash
    parms.stringify_keys!
    rest.stringify_keys!
    rest['class'] = rest['class'].to_s + ' dc-animate'
    rest['target'] ||=  parms.delete('target')
  end
#  
  if icon
    icon_image = if icon.match(/\./)
      _origin.image_tag(icon, class: 'dc-link-img dc-animate')
    elsif icon.match('<i')
      icon
    else
      _origin.fa_icon(icon)
    end
  end
#  
  if caption
    caption = t(caption, caption)
    icon_image << ' ' if icon_image
  end
  _origin.link_to("#{icon_image}#{caption}".html_safe, parms, rest)  
end

#dc_menu_class ⇒ Object

Return menu class model defined in site document menu_class field.

Used in forms for providing menus class to the forms object.

Example as used on form:

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  name: menu_id
  type: tree_view
  eval: 'dc_menu_class.all_menus_for_site(@parent.dc_get_site)'



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# File 'app/helpers/dc_application_helper.rb', line 621

def dc_menu_class()
  dc_get_site.menu_class.classify.constantize
end

#dc_name4_id(model, field, field_name, id = nil) ⇒ Object

Will return descriptive text for id key when field in one table (collection) has belongs_to relation to other table.

Parameters:

model

String. Table (collection) model name (lowercase).

field

String. Field name holding the value of descriptive text.

field_name

String. ID field name. This is by default id, but can be any other

(preferred unique) field.

value

Value of id_field. Usually a BSON Key but can be any other data type.

Example:

# usage in program.
dc_name4_id('dc_user', 'name', nil, dc_page.created_by)

# usage in form
columns:
  2: 
    name: site_id
    eval: dc_name4_id,site,name
# username is saved to document instead of user.id field
  5: 
    name: user
    eval: dc_name4_id,dc_user,name,username

Returns: String. Name (descriptive value) for specified key in table.



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# File 'app/helpers/dc_application_helper.rb', line 757

def dc_name4_id(model, field, field_name, id=nil)
  return '' if id.nil?
  field_name = 'id' if field_name.nil?
  model = model.strip.classify.constantize if model.class == String
  rec = Mongoid::QueryCache.cache { model.find_by(field_name.strip.to_sym => id) }
  rec.nil? ? '' : rec[field]
end

#dc_name4_value(model, field, value) ⇒ Object

When select field is used on form options for select can be provided by helpers.label.table_name.choices4_name locale. This is how select field options are translated. Method returns selected choice translated to current locale.

Parameters:

model

String. Table (collection) model name (lowercase).

field

String. Field name used.

value

String. Value of field which translation will be returned.

Example:

# usage in program. Choice values for state are 'Deactivated:0,Active:1,Waiting:2'
dc_name4_value('dc_user', 'state', @record.active )

# usage in form
columns:
  2: 
    name: state
    eval: dc_name4_value dc_user, state

Returns: String. Descriptive text (translated) for selected choice value.



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# File 'app/helpers/dc_application_helper.rb', line 702

def dc_name4_value(model, field, value)
  return '' if value.nil?
  c = t('helpers.label.' + model + '.choices4_' + field )
  a = c.chomp.split(',').inject([]) {|r,v| r << v.split(':') }
  a.each {|e| return e.first if e.last.to_s == value.to_s }
  ''
end

#dc_new_title ⇒ Object

Creates title for cmsedit new action dialog.

Returns: String. HTML code for title.



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# File 'app/helpers/dc_application_helper.rb', line 292

def dc_new_title()
  title = @form['form']['title']
# defined as form:title:new
  if title and title['new']
    t( title['new'], title['new'] )
  else
    if @form['table'] == 'dc_dummy'
      dc_deprecate('dc_dummy will be deprecated. Use dc_memory instead.')
      @form['table'] = 'dc_memory'
    end
# in memory variables    
    if @form['table'] == 'dc_memory'
      t( @form['title'], @form['title'] )
    else
      "#{t('drgcms.new')} : #{t_tablename(@form['table'])}"    
    end
  end
end

#dc_page_bottom ⇒ Object

Helper for adding additional css and javascript code added by documents and renderers during page rendering.



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# File 'app/helpers/dc_application_helper.rb', line 236

def dc_page_bottom()
  %Q[<style type="text/css">#{@css}</style>#{javascript_tag @js}].html_safe
end

#dc_page_class ⇒ Object

Return page class model defined in site document page_class field.

Used in forms, when method must be called from page model and model is overwritten by user’s own model.

Example as used on form:

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  name: link
  type: text_with_select
  eval: 'dc_page_class.all_pages_for_site(@parent.dc_get_site)'



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# File 'app/helpers/dc_application_helper.rb', line 605

def dc_page_class()
#  dc_get_site.page_class.classify.constantize  
  dc_get_site.page_table.classify.constantize
end

#dc_page_edit_menu(opts = @opts) ⇒ Object

Create edit menu for editing existing or creating new dc_page documents. Edit menu consists of for options.

  • Edit content. Will edit only body part od document.

  • Edit advanced. Will create edit form for editing all document fields.

  • New page. Will create new document and pass some initial data to it. Initial data is saved to cookie.

  • New part. Will create new part of document.

Parameters:

opts

Hash. Optional parameters for url_for helper. These options must provide at least table and formname

and id parameters.

Example:

html << dc_page_edit_menu() if @opts[:edit_mode] > 1

Returns: String. HTML code required for manipulation of currently processed document.



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# File 'app/helpers/dc_application_helper.rb', line 559

def dc_page_edit_menu(opts=@opts)
  opts[:edit_mode] ||= _origin.session[:edit_mode]
  return '' if opts[:edit_mode] < 2
# save some data to cookie. This can not go to session.
  page  = opts[:page] || @page
  table = _origin.site.page_table
  kukis = { "#{table}.dc_design_id" => page.dc_design_id,
            "#{table}.menu_id"      => page.menu_id,
            "#{table}.kats"         => page.kats,
            "#{table}.page_id"      => page.id,
            "#{table}.dc_site_id"   => _origin.site.id
  }
  _origin.cookies[:record] = Marshal.dump(kukis)
  title = "#{t('drgcms.edit')}: #{page.subject}"
  opts[:editparams] ||= {}
  dc_link_menu_tag(title) do |html|
    opts[:editparams].merge!( controller: 'cmsedit', action: 'edit', 'icon' => 'edit' )
    opts[:editparams].merge!( :id => page.id, :table => _origin.site.page_table, formname: opts[:formname], edit_only: 'body' )
    html << dc_link_for_edit1( opts[:editparams], t('drgcms.edit_content') )
    
#    opts[:editparams][:edit_only] = nil
    opts[:editparams].merge!( edit_only: nil, 'icon' => 'pencil' )
    html << dc_link_for_edit1( opts[:editparams], t('drgcms.edit_advanced') )
    
#    opts[:editparams][:action] = 'new'
    opts[:editparams].merge!( action: 'new', 'icon' => 'plus' )
    html << dc_link_for_edit1( opts[:editparams], t('drgcms.edit_new_page') )

    opts[:editparams].merge!(ids: page.id, formname: 'dc_part', 'icon' => 'plus-square-o', 
                             table: "#{_origin.site.page_table};dc_part"  )
    html << dc_link_for_edit1( opts[:editparams], t('drgcms.edit_new_part') )
  end.html_safe
end

#dc_page_top ⇒ Object

Helper for rendering top CMS menu when in editing mode



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# File 'app/helpers/dc_application_helper.rb', line 224

def dc_page_top()
  if @design and !@design.rails_view.blank?
# Evaluate parameters in design body    
    eval(@design.body)
  end
  session[:edit_mode] > 0 ? render(partial: 'cmsedit/edit_stuff') : ''
end

#dc_render(renderer, opts = {}) ⇒ Object

This is main method used for render parts of design into final HTML document.

Parameters:

renderer

String or Symbol. Class name (in lowercase) that will be used to render final HTML code.

If class name is provided without ‘_renderer’ suffix it will be added automatically.

When renderer has value :part, it is a shortcut for dc_render_design_part method which is used to draw parts of layout on design.

opts

Hash. Additional options that are passed to method. Options are merged with

options set on site, design, page and passed to renderer object.

Example:

<%= dc_render(:dc_page, method: 'view', category: 'news') %>



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# File 'app/helpers/dc_application_helper.rb', line 87

def dc_render(renderer, opts={})
  return dc_render_design_part(renderer[:part]) if renderer.class == Hash
# 
  opts[:edit_mode]  = session[:edit_mode] 
  opts[:editparams] = {}
  opts = @options.merge(opts) # merge options with parameters passed on site, page, design ...
  opts.symbolize_keys!        # this makes lots of things easier
# Create renderer object
  klass = renderer.to_s.downcase
  klass += '_renderer' unless klass.match('_renderer') #
  obj = Kernel.const_get(klass.classify, Class.new).new(self, opts) rescue nil
# 
  if obj
    html = obj.render_html
    @css  << obj.render_css.to_s
    html.nil? ? '' : html.html_safe # nil can happened  
  else
    "Class #{klass} not defined!"
  end
end

#dc_render_design(part) ⇒ Object 



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# File 'app/helpers/dc_application_helper.rb', line 197

def dc_render_design(part) 
  dc_render_design_part(part) 
end

#dc_render_design_part(part) ⇒ Object

Used for designs with lots of common code and one (or more) part which differs. Point is to define design once and replace some parts of design dinamically. Design may be defined in site and design doc defines only parts that vary from page to page.

Example: As used in design.

<%= dc_render_design_part(@main) %>

main variable is defined in design body for example:

@main = Proc.new {render partial: 'parts/home'}

This helper is replacement dc_render_from_site method which will soon be deprecated.



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# File 'app/helpers/dc_application_helper.rb', line 172

def dc_render_design_part(part) 
  
  case
  when part.nil? then logger.error('ERROR dc_render_design_part! part is NIL !'); ''
# Send as array. Part may be defined with options on page. First element has
# name of element which defines what to do. If not defined default behaviour is 
# called. That is what is defined in second part of array.
  when part.class == Array then
    if @options.dig(:settings, part.first)
      #TODO to be defined 
    else  
      result = part.last.call
      result.class == Array ? result.first : result
    end
  when part.class == Proc then
    result = part.call
    result.class == Array ? result.first : result
# Send as string. Evaluate content of string    
  when part.class == String then eval part
# For future maybe. Just call objects to_s method.
  else
    part.to_s
  end.html_safe
end

#dc_render_from_site(opts = {}) ⇒ Object

Used for designs with lots of common code and one (or more) part which differs. It will simply replace anchor code with value of variable.

Example: As used in design. Backslashing < and % is important <%

<% part = "<div  class='some-class'>\<\%= dc_render(:my_renderer, method: 'render_method') \%\></div>" %>
<%= dc_replace_in_design(piece: 'piece_name', replace: '[main]', with: part) %>

Want to replace more than one part. Use array.

<%= dc_replace_in_design(replace: ['[part1]','[part2]'], with: [part1, part2]) %>

This helper is replacement for old ‘script’ method defined in dc_piece_renderer, but it uses design defined in site document if piece parameter is not set.



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# File 'app/helpers/dc_application_helper.rb', line 150

def dc_render_from_site(opts={})
  design = opts[:piece] ? DcPiece.find(name: opts[:piece]).script : dc_get_site.design
  layout = opts[:layout] || (dc_get_site.site_layout.size > 2 ? dc_get_site.site_layout : nil)
  
  render(inline: design, layout: opts[:layout], with: opts[:with])
end

#dc_render_partial(opts = {}) ⇒ Object

This is main method used for render parts of design into final HTML document.

Parameters:

renderer

String or Symbol. Class name (in lowercase) that will be used to render final HTML code.

If class name is provided without ‘_renderer’ suffix it will be added automatically.

When renderer has value :part, it is a shortcut for dc_render_design_part method which is used to draw parts of layout on design.

opts

Hash. Additional options that are passed to method. Options are merged with

options set on site, design, page and passed to renderer object.

Example:

<%= dc_render(:dc_page, method: 'view', category: 'news') %>



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# File 'app/helpers/dc_application_helper.rb', line 217

def dc_render_partial(opts={})
  _origin.render(partial: opts[:partial], formats: [:html], locals: opts[:locals])
end

#dc_replace_in_design(opts = {}) ⇒ Object

Used for designs with lots of common code and one (or more) part which differs. It will simply replace anchor code with value of variable.

Example: As used in design. Backslashing < and % is important <%

<% part = "<div  class='some-class'>\<\%= dc_render(:my_renderer, method: 'render_method') \%\></div>" %>
<%= dc_replace_in_design(piece: 'piece_name', replace: '[main]', with: part) %>

Want to replace more than one part. Use array.

<%= dc_replace_in_design(replace: ['[part1]','[part2]'], with: [part1, part2]) %>

This helper is replacement for old ‘script’ method defined in dc_piece_renderer, but it uses design defined in site document if piece parameter is not set.



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# File 'app/helpers/dc_application_helper.rb', line 122

def dc_replace_in_design(opts={})
  design = opts[:piece] ? DcPiece.find(name: opts[:piece]).script : dc_get_site.design
  layout = opts[:layout] || (dc_get_site.site_layout.size > 2 ? dc_get_site.site_layout : nil)
  if opts[:replace]
# replace more than one part of code
    if opts[:replace].class == Array
      0.upto(opts[:replace].size - 1) {|i| design.sub!(opts[:replace][i], opts[:with][i])}
    else
      design.sub!(opts[:replace], opts[:with])
    end
  end
  render(inline: design, layout: nil)
end

#dc_submit_tag(caption, icon, parms, rest = {}) ⇒ Object

Similar to rails submit_tag, but also takes care of link icon, translation, …



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# File 'app/helpers/dc_application_helper.rb', line 331

def dc_submit_tag(caption, icon, parms, rest={})
  parms['class'] ||= 'dc-submit'
  if icon
    icon_image = if icon.match(/\./)
      image_tag(icon, class: 'dc-animate')
    elsif icon.match('<i')
      icon
    else
      fa_icon(icon)
    end
  end
  html = icon_image || ''
  html << submit_tag(t(caption, caption), parms)
end

#dc_table_title(text, result_set = nil) ⇒ Object

Creates title div for DRG CMS dialogs. Title may also contain pagination section on right side if result_set is provided as parameter.

Parameters:

text

String. Title caption.

result_set=nil

Document collection. If result_set is passed pagination links will be created.

Returns: String. HTML code for title.



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# File 'app/helpers/dc_application_helper.rb', line 251

def dc_table_title(text, result_set=nil)
  c = "<table width='100%' class='dc-title'><tr><td>#{text}</td>"
  if result_set and result_set.respond_to?(:current_page)
    c << "<td align='right' style='font-size: 0.8em;'> #{paginate(result_set, :params => {:action => 'index'})}</td>" 
  end
  c << '<tr></table>'
  c.html_safe
end

#dc_user_can_view(ctrl, policy_id) ⇒ Object

Will check if user roles allow user to view data in document with defined access_policy.

Parameters:

ctrl

Controller object or object which holds methods to access session object. For example @parent

variable when called from renderer.

policy_id

Document or documents policy_id field value required to view data. Method will automatically

check if parameter send has policy_id field defined and use value of that field.

Example:

can_view, message = dc_user_can_view(@parent, @page) 
# or
can_view, message = dc_user_can_view(@parent, @page.policy_id)
return message unless can_view

Returns: True if access_policy allows user to view data. False and message from policy that is blocking view if access is not allowed.



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# File 'app/helpers/dc_application_helper.rb', line 1038

def dc_user_can_view(ctrl, policy_id)
  policy_id = policy_id.policy_id if policy_id and policy_id.respond_to?(:policy_id)
# Eventualy object without policy_id will be checked. This is to prevent error
  policy_id = nil unless policy_id.class == BSON::ObjectId
#
  site = ctrl.site
  policies = site.dc_policies
  policies = if site.inherit_policy.blank? 
    site.dc_policies
  else
    Mongoid::QueryCache.cache { DcSite.find(site.inherit_policy) }.dc_policies
  end
# permission defined by default policy
  default_policy = Mongoid::QueryCache.cache { policies.find_by(is_default: true) }
  return false, 'Default access policy not found for the site!' unless default_policy
#  
  permissions = {}
  default_policy.dc_policy_rules.to_a.each { |v| permissions[v.dc_policy_role_id] = v.permission }
# update permissions with defined policy 
  part_policy = nil
  if policy_id
    part_policy = Mongoid::QueryCache.cache { policies.find(policy_id) }
    return false, 'Access policy not found for part!' unless part_policy
    part_policy.dc_policy_rules.to_a.each { |v| permissions[v.dc_policy_role_id] = v.permission }
  end
# apply guest role if user has no roles defined
  if ctrl.session[:user_roles].nil?
    role = Mongoid::QueryCache.cache { DcPolicyRole.find_by(system_name: 'guest', active: true) }
    return false, 'System guest role not defined!' unless role
    ctrl.session[:user_roles] = [role.id]
  end
# Check if user has any role that allows him to view part
  can_view, msg = false,''
  ctrl.session[:user_roles].each do |role|
    next unless permissions[role]          # role not yet defined. Will die in next line.
    if permissions[role] > 0
      can_view = true
      break
    end
  end
  msg = if !can_view
    part_policy ? t(part_policy.message,part_policy.message) : t(default_policy.message,default_policy.message)
  end
  return can_view, msg
end

#dc_user_has_role(role, user = nil, roles = nil) ⇒ Object

Check if user has required role assigned to its user profile. If role is passed as string method will check roles for name and system name.

Parameters:

role

DcPolicyRole/String. Required role. If passed as string role will be searched in dc_policy_roles collection.

user

User id. Defaults to session.

roles

Array of roles that will be searched. Default session.

Example:

if dc_user_has_role('decision_maker', session[:user_id), session[:user_roles]) 
  do_something_important
end

Returns: Boolean. True if user has required role.



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# File 'app/helpers/dc_application_helper.rb', line 1101

def dc_user_has_role( role, user=nil, roles=nil )
  roles = _origin.session[:user_roles] if roles.nil?
  user  = _origin.session[:user_id] if user.nil?
  return false if user.nil? or roles.nil?
#  
  role = DcPolicyRole.get_role(role)
  return false if role.nil?
# role is included in roles array
  roles.include?(role._id)
end

#decamelize_type(string) ⇒ Object

Decamelizes string. This probably doesn’t work very good with non ascii chars. Therefore it is very unwise to use non ascii chars for table (collection) names.

Parameters:

string

String. String to be converted into decamelized string.

Returns: String. Decamelized string.



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# File 'app/helpers/dc_application_helper.rb', line 409

def decamelize_type(string)
  return nil if string.nil?
  r = ''
  string.to_s.each_char do |c|
    r << case 
      when r.size == 0     then c.downcase
      when c.downcase != c then '_' + c.downcase
      else c      
    end
  end
  r
end

#forms_merge(hash1, hash2) ⇒ Object

Merges two forms when current form extends other form. Subroutine of dc_choices4_cmsmenu. With a little help of www.ruby-forum.com/topic/142809



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# File 'app/helpers/dc_application_helper.rb', line 889

def forms_merge(hash1, hash2) #:nodoc:
  target = hash1.dup
  hash2.keys.each do |key|
    if hash2[key].is_a? Hash and hash1[key].is_a? Hash
      target[key] = forms_merge(hash1[key], hash2[key])
      next
    end
    target[key] = hash2[key] == '/' ? nil :  hash2[key]
  end
# delete keys with nil value  
  target.delete_if{ |k,v| v.nil? }
end

#t(key, default = '') ⇒ Object

Wrapper for i18 t method, with some spice added. If translation is not found English translation value will be returned. And if still not found default value will be returned if passed.

Parameters:

key

String. String to be translated into locale.

default

String. Value returned if translation is not found.

Example:

t('translate.this','Enter text for ....')

Returns: String. Translated text.



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# File 'app/helpers/dc_application_helper.rb', line 640

def t(key, default='')
  c = I18n.t(key)
  if c.class == Hash or c.match( 'translation missing' )
    c = I18n.t(key, locale: 'en') 
# Still not found. Return default if set
    if c.class == Hash or c.match( 'translation missing' )
      c = default.blank? ? key : default
    end
  end
  c
end

#t_name(field_name, default = '') ⇒ Object

Returns label for field translated to current locale for usage on data entry form. Translation is provided by lang.helpers.label.table_name.field_name locale. If translation is not found method will capitalize field_name and replace ‘_’ with ‘ ’.



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# File 'app/helpers/dc_application_helper.rb', line 672

def t_name(field_name, default='')
  c = t("helpers.label.#{@form['table']}.#{field_name}", default)
  c = field_name.capitalize.gsub('_',' ') if c.match( 'translation missing' )
  c
end

#t_tablename(tablename, default = nil) ⇒ Object

Returns table (collection) name translation for usage in dialog title. Tablename title is provided by helpers.label.table_name.tabletitle locale.

Parameters:

tablename

String. Table (collection) name to be translated.

default

String. Value returned if translation is not found.

Returns: String. Translated text.



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# File 'app/helpers/dc_application_helper.rb', line 663

def t_tablename(tablename, default=nil)
  t('helpers.label.' + tablename + '.tabletitle', default || tablename)
end