module ActiveScaffold::Actions::Nested

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).

Protected Instance Methods

beginning_of_chain() click to toggle source
# 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
configure_nested() click to toggle source
# 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
create_association_with_parent(record) click to toggle source
# 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
include_habtm_actions() click to toggle source
# 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
nested() click to toggle source
# File lib/active_scaffold/actions/nested.rb, line 18
def nested
  @nested
end
nested?() click to toggle source
# File lib/active_scaffold/actions/nested.rb, line 22
def nested?
  !nested.nil?
end
nested_authorized?(record = nil) click to toggle source
# File lib/active_scaffold/actions/nested.rb, line 46
def nested_authorized?(record = nil)
  true
end
nested_parent_record(crud = :read) click to toggle source
# 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
set_nested() click to toggle source
# 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

Public Class Methods

included(base) click to toggle source
# 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