<commit_before>module ActiveScaffold::Actions
  # 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).
  module Nested

    def self.included(base)
      super
      base.module_eval do
        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

    protected
    def nested
      set_nested unless defined? @nested
      @nested
    end
    
    def nested?
      !nested.nil?
    end
    
    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
    
    def configure_nested
      if nested?
        active_scaffold_config.list.user.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.nested.ignore_order_from_association
          active_scaffold_config.list.user.nested_default_sorting = {:table_name => active_scaffold_config.model.model_name, :default_sorting => nested.default_sorting}
        end
      end
    end
    
    def nested_authorized?(record = nil)
      true
    end

    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
    
    def beginning_of_chain
      if nested? && nested.association
        if nested.association.collection?
          nested_parent_record.send(nested.association.name)
        elsif nested.association.options[:through] # has_one :through
          active_scaffold_config.model.where(active_scaffold_config.model.primary_key => nested_parent_record.send(nested.association.name).try(:id))
        elsif nested.child_association.nil? # without child_association is not possible to add conditions
          active_scaffold_config.model
        elsif nested.child_association.belongs_to?
          active_scaffold_config.model.where(nested.child_association.foreign_key => nested_parent_record)
        elsif nested.association.belongs_to?
          chain = active_scaffold_config.model.joins(nested.child_association.name)
          table_name = if active_scaffold_config.model == nested.association.active_record
            dependency = ActiveRecord::Associations::JoinDependency.new(chain.klass, chain.joins_values, [])
            dependency.join_associations.find {|join| join.try(:reflection).try(:name) == nested.child_association.name}.try(:table).try(:right)
          end
          table_name ||= nested.association.active_record.table_name
          chain.where(table_name => {nested.association.active_record.primary_key => nested_parent_record}).readonly(false)
        end
      elsif nested? && nested.scope
        nested_parent_record.send(nested.scope)<commit_msg>fix has_one/belongs_to nested with :primary_key option<commit_after>module ActiveScaffold::Actions
  # 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).
  module Nested

    def self.included(base)
      super
      base.module_eval do
        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

    protected
    def nested
      set_nested unless defined? @nested
      @nested
    end
    
    def nested?
      !nested.nil?
    end
    
    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
    
    def configure_nested
      if nested?
        active_scaffold_config.list.user.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.nested.ignore_order_from_association
          active_scaffold_config.list.user.nested_default_sorting = {:table_name => active_scaffold_config.model.model_name, :default_sorting => nested.default_sorting}
        end
      end
    end
    
    def nested_authorized?(record = nil)
      true
    end

    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
    
    def beginning_of_chain
      if nested? && nested.association
        if nested.association.collection?
          nested_parent_record.send(nested.association.name)
        elsif nested.association.options[:through] # has_one :through
          active_scaffold_config.model.where(active_scaffold_config.model.primary_key => nested_parent_record.send(nested.association.name).try(:id))
        elsif nested.child_association.nil? # without child_association is not possible to add conditions
          active_scaffold_config.model
        elsif nested.child_association.belongs_to?
          active_scaffold_config.model.where(nested.child_association.foreign_key => nested_parent_record.send(nested.association.association_primary_key))
        elsif nested.association.belongs_to?
          chain = active_scaffold_config.model.joins(nested.child_association.name)
          table_name = if active_scaffold_config.model == nested.association.active_record
            dependency = ActiveRecord::Associations::JoinDependency.new(chain.klass, chain.joins_values, [])
            dependency.join_associations.find {|join| join.try(:reflection).try(:name) == nested.child_association.name}.try(:table).try(:right)
          end
          table_name ||= nested.association.active_record.table_name
          chain.where(table_name => {nested.association.active_record.primary_key => nested_parent_record}).readonly(false)
        end
      elsif nested? && nested.scope
        nested_parent_record.send(nested.scope)
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