Method: ActiveExt::Core#initialize

Defined in:
lib/active_ext/core.rb

#initialize(model_id, options) ⇒ Core

Returns a new instance of Core.



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# File 'lib/active_ext/core.rb', line 11

def initialize(model_id, options)
  @model_id = model_id.to_s.pluralize.singularize
  @options = options

  #get all attribute columns
  attribute_names = self.model.columns.collect { |c| c.name.to_sym }.sort_by { |c| c.to_s }

  #only include attribute columns we care about, do not remove rails generated columns
  if options[:only]
    valid_columns = []
    options[:only].each do |option|
      if option.is_a?(Hash)
        valid_columns << option.keys.first
      else
        valid_columns << option
      end
    end
    valid_columns = valid_columns | RAILS_COLUMNS
    attribute_names.delete_if { |item| !valid_columns.include?(item.to_sym) }
  end

  #if we are including associations get them
  unless options[:ignore_associations]
    @association_names = self.model.reflect_on_all_associations.collect { |a| a.name.to_sym }
    association_column_names = @association_names.sort_by { |c| c.to_s }
    attribute_names += association_column_names
  end

  @columns = ActiveExt::DataStructures::Columns.new(self.model, attribute_names)

  #exclude id columns and count columns and better nested set columns
  @columns.exclude(*@columns.find_all { |c| c.column and (c.column.primary or c.column.name =~ /(_id|_count)$/) }.collect { |c| c.name })
  #exclude nested set columns
  @columns.exclude(*@columns.find_all { |c| c.column and (BETTER_NESTED_SET_COLUMNS.include?(c.column.name.to_sym)) }.collect { |c| c.name })
  #exclude associations columns
  @columns.exclude(*self.model.reflect_on_all_associations.collect { |a| :"#{a.name}_type" if a.options[:polymorphic] }.compact)

  set_column_options
end