I had to hunt down many snippets to make it working.
In the ActiveScaffold forum I’ve found this nice code, which almost works.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | Here's the model: class Category < ActiveRecord::Base has_many :children, :class_name => 'Category', :foreign_key => 'parent_id' belongs_to :parent, :class_name => 'Category', :foreign_key => 'parent_id' has_many :articles acts_as_nested_set validates_presence_of :title after_create :setchild def setchild if self[:parent_id].nil? return true end self.save self.move_to_child_of self.parent return true end end And controller: class CategoryController < ApplicationController layout 'admin' active_scaffold :category do |config| config.columns[:title].set_link('<strong style="color: black; background-color: #a0ffff">nested</strong>', :parameters => {:associations => :children}) config.list.columns.exclude :children, :parent, :lft, :rgt config.create.columns = :title, :description config.update.columns = :title, :description end def conditions_for_collection return ['parent_id IS NULL'] if !params.has_key?(:<strong style="color: black; background-color: #a0ffff">nested</strong>) end end |
I had bugs in after_create and I found another snippet at another forum thread.
1 2 3 4 | def after_create_save(record) record.move_to_child_of record.parent.id unless record.parent.nil? end |
… and now it seems to be working in development mode. the full snippet is here:
- in the model:
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class Help < ActiveRecord::Base has_many :children, :class_name => "Help", :foreign_key => :parent_id belongs_to :parent, :class_name => "Help", :foreign_key => :parent_id acts_as_nested_set #after_create :set_child def after_create_save(record) record.move_to_child_of record.parent.id unless record.parent.nil? end end
- in the controller:
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class HelpsController < ApplicationController layout nil active_scaffold :helps do |config| config.list.columns = [:name, :description, :ro] config.update.columns = [:name, :description, :ro] config.create.columns = [:name, :description, :ro] config.show.columns = [:name, :description, :ro] #config.columns[:name].set_link('nested', :parameters => {:associations => :children}) config.nested.add_link "nested", [:children] list.sorting = {:name => 'ASC'} # Internationalization / localization config.label = Help.localized_model_name config.columns[:name].label = Help.human_attribute_name(:name) config.columns[:description].label = Help.human_attribute_name(:description) config.columns[:en].label = Help.human_attribute_name(:en) config.columns[:ro].label = Help.human_attribute_name(:ro) config.columns[:hu].label = Help.human_attribute_name(:hu) end def conditions_for_collection return ['parent_id IS NULL'] if !params.has_key?(:nested) end end
