Class: DcFilter

Inherits:
Object
  • Object
show all
Includes:
Mongoid::Document, Mongoid::Timestamps
Defined in:
app/models/dc_filter.rb

Overview

Model and collection for filtering and sorting data.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.get_field_form_definition(name, parent) ⇒ Object

Will return field form definition if field is defined on form. Field definition will be used for input field on the form.



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# File 'app/models/dc_filter.rb', line 91

def self.get_field_form_definition(name, parent) #:nodoc:
  form = parent.form
  form['form']['tabs'].each do |tab|
# Array with 2 elements. First is tabname, second is data      
    my_fields = tab.last
    my_fields.each {|k,v| return v if (k.class == Integer and v['name'] == name) }
  end if form['form']['tabs'] #  I know. But nice. 
#
  form['form']['fields'].each do |field|
    next unless field.first.class == Integer # options
    return field.last if field.last['name'] == name
  end if form['form']['fields']
  nil
end

.get_filter(filter) ⇒ Object

Will return model with filter query set



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# File 'app/models/dc_filter.rb', line 54

def self.get_filter(filter)
  yaml = YAML.load(filter) rescue nil
  return yaml if yaml.nil?
  return nil if yaml['table'].nil? # old data
#  
  model = yaml['table'].classify.constantize
  field = yaml['field'] == 'id' ? '_id' : yaml['field'] # must be
# evaluate
  if yaml['operation'] == 'eval' and model.respond_to?(yaml['field'])
    return model.send( yaml['field'] )
  end
# if empty
  if yaml['operation'] == 'empty'
    return model.in(field => [nil,''])
  end
# if value == NIL no filter is necessary
  return nil if yaml['value'].class == String and yaml['value'] == '#NIL'
  
# do regex if operation is like  
  value = yaml['operation'] == 'like' ? /#{yaml['value']}/i : yaml['value'] 
# when field type is ObjectId transform value    
  if model.fields[field] and model.fields[field].type == BSON::ObjectId
    value = BSON::ObjectId.from_string(value) rescue nil
  end
#
  if ['eq','like'].include?(yaml['operation'])
    model.where(field => value)
# TODO in operator    
  else
    model.where(field.to_sym.send(yaml['operation']) => value)
  end
end

.get_filter_field(parent) ⇒ Object

Return filter input field for entering variable filter values on index form



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# File 'app/models/dc_filter.rb', line 109

def self.get_filter_field(parent)
  return '' if parent.session[ parent.form['table'] ].nil?

  filter = parent.session[ parent.form['table'] ][:filter]
  return '' if filter.nil?

  filter = YAML.load(filter) rescue nil 
  return '' if filter.nil?

  field = get_field_form_definition(filter['field'], parent)
  return '' if field.nil? && filter['input'].nil?

  saved_readonly = parent.form['readonly']
  parent.form['readonly'] = nil # must be
  field ||= {}
  # If field has choices available in labels, use them. This is most likely select input field.
  if field['name']
    choices = parent.t('helpers.label.' + parent.form['table'] + '.choices4_' + field['name'] )
    unless choices.match( 'translation missing' ) or choices.match('helpers.label')
      field['choices'] = choices
    end
  end
  # field redefined with input keyword. Name must start with _
  field['name']     = '_filter_field'
  field['type']     = filter['input'] if filter['input'].to_s.size > 5
  field['type']   ||= 'text_field'
  field['readonly'] = false   # must be
  field['html']   ||= {}
  field['html']['size'] = 20
  # Start with last entered value
  field['html']['value']    = filter['value'] unless filter['value'] == '#NIL'
  field['html']['selected'] = field['html']['value'] # for select field
  # url for filter ON action
  field['html']['data-url'] = parent.url_for(
    controller: 'cmsedit', action: :index, filter: 'on',
    table: parent.form['table'], form_name: parent.params['form_name'])
  url = field['html']['data-url']
  # remove if present
  field['with_new'] = nil if field['with_new']
  # create input field object
  klas_string = field['type'].camelize
  klas = DrgcmsFormFields::const_get(klas_string) rescue nil
  parent.form['readonly'] = saved_readonly
  return '' if klas.nil?

  # return data from object and create html code to display field
  object = klas.new(parent, nil, field).render rescue nil
  # Error. Forget filter and return 
  if object.nil?
    parent.session[ parent.form['table'] ][:filter] = nil
    return ''
  end
  js = object.js.blank? ? '' : parent.javascript_tag(object.js)
%(<li class="no-background">
<span class="filter_field" data-url="#{url}">#{object.html}
#{parent.fa_icon('search lg', class: 'record_filter_field_icon')}
#{js}</span>
</li>)
end

.menu_filter(parent) ⇒ Object

Create popup menu for filter options.



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# File 'app/models/dc_filter.rb', line 172

def self.menu_filter(parent)
  html = '<ul class="menu-filter">' 
  table = parent.form['table']
  documents = self.where(table: table, active: true).to_a
  documents.each do |document|
    description = document.description.match('.') ? I18n.t(document.description) : document.description
    html << "<li data-filter=\"#{document.id}\">#{description}</li>"
  end

# add filters defined in model
  model = table.classify.constantize
  filters = model.dc_filters rescue nil
  if filters
# only single defined. Convert to array.    
    filters = [filters] if filters.class == Hash
    filters.each do |filter| 
      url = parent.dc_link_to(filter['title'], nil,controller: :cmsedit, action: :index, table: table,
                           form_name: parent.params[:form_name], 
                           filter_field: filter['field'],
                           filter_oper: filter['operation'],
                           filter_value: filter['value'],
                           filter: 'on')
      html << "<li>#{url}</li>"
    end
  end
# divide standard and custom filter options  
  html << '<hr>' if html.size > 30 # 
  html << '<li id="open_drgcms_filter">' + I18n.t('drgcms.filter_set') + '</li>'
  html << '</ul>'
end

.title4_filter_off(filter_yaml) ⇒ Object

Creates title for turn filter off, which consists of displaying curently active filter and text to turn it off.



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# File 'app/models/dc_filter.rb', line 207

def self.title4_filter_off(filter_yaml)
  filter = YAML.load(filter_yaml)
  operations = I18n.t('drgcms.choices4_filter_operators').chomp.split(',').inject([]) {|r,v| r << v.split(':') }
  operation = ''
  if filter['operation'] == 'eval'
   filter['field']
  else
    operations.each{|a| (operation = a.first; break) if a.last == filter['operation']}
#
    '[ ' + I18n.t("helpers.label.#{filter['table']}.#{filter['field']}") + 
    " ] #{operation} [ #{filter['value'].to_s} ] : #{I18n.t('drgcms.filter_off')}"
  end
end

Instance Method Details

#do_before_save ⇒ Object

Implementation of before_save callback.



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# File 'app/models/dc_filter.rb', line 47

def do_before_save
  self.dc_user_id = nil if self.public
end