Class: DrgcmsFormFields::DrgcmsField

Inherits:
Object
  • Object
show all
Defined in:
app/models/drgcms_form_fields/drgcms_field.rb

Overview

Template method for DRG CMS form field definition. This is abstract class with most of the common code for custom form field already implemented.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, record, yaml) ⇒ DrgcmsField

DrgcmsField initialization code.

Parameters:

parent

Controller object. Controller object from where object is created. Usually self is send.

record

Document object. Document object which holds fields data.

yaml

Hash. Hash object holding field definition data.

Returns: Self



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 78

def initialize( parent, record, yaml )
  @parent = parent
  @record = record
  @yaml   = yaml
  @form   = parent.form
  @yaml['html'] ||= {}
  # set readonly field
  @readonly = (@yaml and @yaml['readonly']) || (@form and @form['readonly'])
  @yaml['html']['readonly'] = true if @readonly
  # assign size to html element if not already there
  @yaml['html']['size'] ||= @yaml['size'] if @yaml['size'] 
    
  @html   = ''  
  @js     = ''
  @css    = set_css_code @yaml['css']
  self
end

Instance Attribute Details

#css ⇒ Object (readonly)

Returns the value of attribute css.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 65

def css
  @css
end

#js ⇒ Object (readonly)

Returns the value of attribute js.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 64

def js
  @js
end

Class Method Details

.get_data(params, name) ⇒ Object

Default get_data method for retrieving data from parameters. Class method is called for every entry field defined on form before field value is saved to database.

Parameters:

params

Controllers params object.

name

Field name

Most of classes will use this default method which returns params[name]. When field data is more complex class should implement its own get_data method.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 314

def self.get_data(params, name)
  params['record'][name]
end

Instance Method Details

#hash_to_options(options) ⇒ Object

Will return ruby hash formated as javascript string which can be used for passing parameters in javascript code.

Parameters:

Hash

Hash. Ruby hash parameters.

Form example: As used in forms

  options:
    height: 400
    width: 800
    toolbar: "basic"

=> "height:400, width:800, toolbar: 'basic'"

Return: String: Options formated as javascript options.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 244

def hash_to_options(options)
  c = ''
  options.each do |key, option|
    c << "#{key} : "
    c << case
         when option.to_s.match(/function/i) then option
         when option.class == String then "\"#{option}\""
         else option.to_s
         end
    c << ",\n"
  end
  c
end

#html ⇒ Object

Returns html code together with CSS code.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 99

def html
  @html
end

#options_to_hash(options) ⇒ Object

Options may be defined on form as hash or as string. This method will ensure conversion of options into hash.

Parameters:

String or Hash

: Form options

Form example: As used in forms

  options:
    height: 400
    width: 800
    toolbar: "'basic'"
or

options: "height:400, width:800, toolbar:'basic'"

Return: Hash: Options as Hash



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 277

def options_to_hash(options)
  return {} if options.nil?
  return options unless options.class == String

  options.chomp.split(',').inject({}) do |r, e|
    key, value = e.chomp.split(':')
    value.strip!
    value = value[1..value.size - 2] if value[0] =~ /\'|\"/
    r[key.strip] = value
    r
  end
end

#record_text_for(name) ⇒ Object

Checks if field name exists in document and alters record parameters if necesary. Method was added after fields that do not belong to current edited document were added to forms. Valid nonexisting form field names must start with underscore (_) letter.

Return: String: ‘record’ or ‘_record’ when valid nonexisting field is used



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 298

def record_text_for(name)
  (!@record.respond_to?(name) and name[0,1] == '_') ? '_record' : 'record'
end

#ro_standard(value = nil) ⇒ Object

Standard code for returning readonly field.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 130

def ro_standard(value = nil)
  value ||= @yaml['html']['value'] || (@record.respond_to?(@yaml['name']) ? @record.send(@yaml['name']) : nil)
  @html << %(<div id="#{@yaml['name']}" class="dc-readonly">#{value}</div>)
  self
end

#set_css_code(css) ⇒ Object

Sets css code for the field if specified. It replaces all occurences of ‘# ’ with field name id, as defined on form.



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 218

def set_css_code(css)
  return '' if css.blank?

  css.gsub!('# ',"#td_record_#{@yaml['name']} ") if css.match('# ')
  css
end

#set_default_value(opt1, opt2) ⇒ Object

Will set default value



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 163

def set_default_value(opt1, opt2)
  return if @yaml[opt1][opt2].present?
  return if @record && @record[@yaml['name']].present?

  @yaml[opt1][opt2] = if @yaml['default'].class == Hash
                        evaluate = @yaml['default']['eval']
                        return if evaluate.blank?
                        # add @parent if it's a method call and @parent is not present
                        if evaluate[0] != evaluate[0].upcase && !evaluate.match('@parent')
                          evaluate.prepend('@parent.')
                        end
                        eval(evaluate)
                      else
                        @yaml['default']
                      end
end

#set_initial_value(opt1 = 'html', opt2 = 'value') ⇒ Object

Set initial value of the field when initial value is set in url parameters..

Example: Form has field named picture. Field can be initialized by setting value of param p_picture.

params['p_picture'] = '/path/to_picture'

When multiple initial values are assigned it is more convinient to assign them through flash object.

flash[:record] = {}
flash[:record]['picture'] = '/path/to_picture'



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 148

def set_initial_value(opt1 = 'html', opt2 = 'value')
  @yaml['html'] ||= {}
  value_send_as = 'p_' + @yaml['name']
  if @parent.params[value_send_as]
    @yaml[opt1][opt2] = @parent.params[value_send_as] 
  elsif @parent.flash[:record]
    value = @parent.flash[:record][@yaml['name']] || @parent.flash[:record][@yaml['name'].to_sym]
    @yaml[opt1][opt2] = value if value
  end
  set_default_value(opt1, opt2) if @yaml['default']
end

#set_style ⇒ Object

Returns style html code for DRGForm object if style directive is present in field definition. Otherwise returns empty string.

Style may be defined like:

  style:
    height: 400px
    width: 800px
    padding: 10px 20px

  or 

  style: "height:400px; width:800px; padding: 10px 20px;"

Style directive may also be defined under html directive.
  html:
    style:
      height: 400px
      width: 800px



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# File 'app/models/drgcms_form_fields/drgcms_field.rb', line 202

def set_style()
  style = @yaml['html']['style'] || @yaml['style']
  case
    when style.nil? then ''
    when style.class == String then "style=\"#{style}\""
    when style.class == Hash then
      value = style.to_a.inject([]) {|r,v| r << "#{v[0]}: #{v[1]}" }.join(';')
      "style=\"#{value}\"" 
    else ''
  end 
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/models/drgcms_form_fields/drgcms_field.rb', line 117

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