The Nested module basically handles automatically linking controllers together. It does this by creating column links with the right parameters, and by providing any supporting systems (like a /:controller/nested action for returning associated scaffolds).
# File lib/active_scaffold/actions/nested.rb, line 75 def beginning_of_chain if nested? && nested.association && !nested.association.belongs_to? if nested.association.collection? nested.parent_scope.send(nested.association.name) elsif nested.association.options[:through] # has_one :through doesn't need conditions active_scaffold_config.model elsif nested.child_association.belongs_to? active_scaffold_config.model.where(nested.child_association.foreign_key => nested.parent_scope) end elsif nested? && nested.scope nested.parent_scope.send(nested.scope) else active_scaffold_config.model end end
# File lib/active_scaffold/actions/nested.rb, line 33 def configure_nested if nested? active_scaffold_session_storage[:list][:label] = if nested.belongs_to? as_(:nested_of_model, :nested_model => active_scaffold_config.model.model_name.human, :parent_model => nested_parent_record.to_label) else as_(:nested_for_model, :nested_model => active_scaffold_config.list.label, :parent_model => nested_parent_record.to_label) end if nested.sorted? active_scaffold_config.list.user.nested_default_sorting = {:table_name => active_scaffold_config.model.model_name, :default_sorting => nested.default_sorting} end end end
# File lib/active_scaffold/actions/nested.rb, line 95 def create_association_with_parent(record) if nested? if (nested.belongs_to? || nested.has_one? || nested.habtm?) && nested.child_association parent = nested_parent_record(:read) case nested.child_association.macro when :has_one record.send("#{nested.child_association.name}=", parent) when :belongs_to record.send("#{nested.child_association.name}=", parent) when :has_many, :has_and_belongs_to_many record.send("#{nested.child_association.name}").send(:<<, parent) end unless parent.nil? end end end
# File lib/active_scaffold/actions/nested.rb, line 50 def include_habtm_actions if nested? if nested.habtm? # Production mode is ok with adding a link everytime the scaffold is nested - we ar not ok with that. active_scaffold_config.action_links.add('new_existing', :label => :add_existing, :type => :collection, :security_method => :add_existing_authorized?) unless active_scaffold_config.action_links['new_existing'] if active_scaffold_config.nested.shallow_delete active_scaffold_config.action_links.add('destroy_existing', :label => :remove, :type => :member, :confirm => :are_you_sure_to_delete, :method => :delete, :position => false, :security_method => :delete_existing_authorized?) unless active_scaffold_config.action_links['destroy_existing'] if active_scaffold_config.actions.include?(:delete) active_scaffold_config.action_links.delete("delete") if active_scaffold_config.action_links['delete'] end end else # Production mode is caching this link into a non nested scaffold active_scaffold_config.action_links.delete('new_existing') if active_scaffold_config.action_links['new_existing'] if active_scaffold_config.nested.shallow_delete active_scaffold_config.action_links.delete("destroy_existing") if active_scaffold_config.action_links['destroy_existing'] if active_scaffold_config.actions.include?(:delete) active_scaffold_config.action_links.add(ActiveScaffold::Config::Delete.link) unless active_scaffold_config.action_links['delete'] end end end end end
# File lib/active_scaffold/actions/nested.rb, line 18 def nested @nested end
# File lib/active_scaffold/actions/nested.rb, line 22 def nested? !nested.nil? end
# File lib/active_scaffold/actions/nested.rb, line 91 def nested_parent_record(crud = :read) @nested_parent_record ||= find_if_allowed(nested.parent_id, crud, nested.parent_model) end
# File lib/active_scaffold/actions/nested.rb, line 26 def set_nested if params[:parent_scaffold] && (params[:association] || params[:named_scope]) @nested = ActiveScaffold::DataStructures::NestedInfo.get(active_scaffold_config.model, params) register_constraints_with_action_columns(@nested.constrained_fields) unless @nested.nil? end end
# File lib/active_scaffold/actions/nested.rb, line 5 def self.included(base) super base.module_eval do prepend_before_filter :set_nested before_filter :configure_nested include ActiveScaffold::Actions::Nested::ChildMethods if active_scaffold_config.model.reflect_on_all_associations.any? {|a| a.macro == :has_and_belongs_to_many} end base.before_filter :include_habtm_actions base.helper_method :nested base.helper_method :nested_parent_record end