Module: DataMapper::ExtJS::Model

Defined in:
lib/dm-extjs/model.rb

Instance Method Summary collapse

Instance Method Details

#ext_meta(relationships = nil) ⇒ Object

generates the meta description of a resource TODO: idProperty is set to the first primary key, in instances where you have multiple keys this would be wrong

pass array of relationships (as in to_json(:methods => RELATIONSHIPS)) so as to squash provide meta mapping for these related models, this will squash those properties on top of the base model



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# File 'lib/dm-extjs/model.rb', line 13

def ext_meta (relationships=nil)
  relationships ||= []
  ret = {
    :fields => properties.collect {|p| property_description(p)},
    :idProperty => properties.key.first.name
  }
  
  # map related properties to meta description
  # TODO: cleanup needed
  # because "relationships" are actually all declared :methods, this will
  # try to build meta descriptions for both methods on a model, and
  # relationships on a resource, here we attempt to treat the method as a
  # relationship, then assume it's a model level method with a return type
  # of string 
  relationships.each do |r|
    begin
      __send__(r.to_sym).model.properties.each do |p|
        prop = self.property_description(p)
        prop[:mapping] = "#{r}.#{prop[:name]}"
        prop[:name] = "#{r}__#{prop[:name]}"
        ret[:fields].push(prop)
      end
    rescue
      ret[:fields].push({
        :name => r,
        :type => 'string'
      })
    end
    
    
  end
  
  EXT_META.merge(ret)
end