Class: Aurita::GUI::Lore_Model_Select_Field

Inherits:
Select_Field
  • Object
show all
Defined in:
lib/lore/gui/lore_model_select_field.rb

Instance Method Summary collapse

Constructor Details

#initialize(model, params, &block) ⇒ Lore_Model_Select_Field

Returns a new instance of Lore_Model_Select_Field.



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# File 'lib/lore/gui/lore_model_select_field.rb', line 9

def initialize(model, params, &block)
  @model        = model
  @filter       = params[:filter]
  @filter     ||= true
  if block_given? then
    @select_block = block
  else
    @select_block = Proc.new { |clause| clause.where(@filter) }
  end
  params.delete(:filter)
  super(params)
end

Instance Method Details

#option_elements ⇒ Object 



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# File 'lib/lore/gui/lore_model_select_field.rb', line 22

def option_elements
  elements = []
  options  = []

  foreign_table = @model.table_name
  selectables = @model.select(&@select_block)
  selectables.each { |foreign| 
    foreign_label = ''
    if @model.get_labels.nil? then
      raise Aurita::GUI::Form_Error.new('Specify a label for has_a - related model klasses (here: ' << @model.to_s + ') via "use_label".')
    end
    @model.get_labels.each { |label_attrib|
      foreign_label << foreign.get_attribute_values[foreign_table][label_attrib.split('.')[-1]].to_s << ' '
    }

    @model.get_primary_keys[foreign_table].uniq.each { |keys|
      key_string = ''
      keys.each { |key|
        # concatenate combined primary keys like 'id--id2' -> '3--4'
        if key_string != '' then key_string << '--' end
        key_string << foreign.get_attribute_values[foreign_table][key]
      }
      options << { key_string => foreign_label }
    }
  }
  
  options.each { |map| 
    map.each_pair { |k,v|
      elements << HTML.option(:value => k) { v }
    }
  }
  elements
end