Module: Urbix::ActsAsView::ClassMethods

Defined in:
lib/urbix/acts_as_view.rb

Instance Method Summary collapse

Instance Method Details

#acts_as_view(options = {}) {|vr| ... } ⇒ Object

Yields:

  • (vr) 


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# File 'lib/urbix/acts_as_view.rb', line 102

def acts_as_view(options = {})
  Logger.debug "ActsAsView on #{self}"
  # 1. call block to customise views attributes
  vr = ViewRelations.new(self)
  yield vr if block_given?
  sc = self.columns_hash.keys.collect{|col| "#{self.table_name}.#{col}"}
  sc << vr.select_clause unless vr.select_clause.empty?
  fc = vr.from_clause
  wc = vr.join_clause
  self.class_variable_set(:@@_View__Relations,[sc,fc,wc])
  class_eval do
    def self.view
      # View method return ActiveRecord Relation to retrieve view element in one request
      sc,fc,wc = self.class_variable_get(:@@_View__Relations)
      select(sc).from(fc).where(wc)
    end
  end
end