Исходя из этого ответа , у меня возникла проблема с accepts_nested_attributes_for.
Перво-наперво, это мой код ошибки:
undefined method `reflect_on_association' for NilClass:Class line 39
, которое я получаю при вызове этого частичного в _formfield.html.haml:
36: = link_to "Edit list", notifications_path
37: %br
38: %li.tip
39: = link_to_add_association 'Add product codes', f, :productcodes
40: = f.semantic_fields_for :productcodes do |productcode|
41: = render 'productcode_fields', :f => productcode
42: %br
Я использую rails 3-ised, formtastic-ised версию Edit Multiple Screencast Райана Бейтса. Вот мой код:
edit_multiple.html.haml
= semantic_form_for :isbn, url: { controller: 'isbns', action: 'update_multiple' }, html: { method: :put } do |f|
%ul
- @isbns.each do |isbn|
%li
= hidden_field_tag "isbn_ids[]", isbn.id
= isbn.descriptivedetail_titledetail_titleelement_titlewithoutprefix
= render 'formfields', f: f
= submit_tag "Submit"
index.html.haml (отредактировано для релевантности, поэтому, если некоторые из форматирования haml отсутствуют, это, вероятно, не ошибка)
%td.main
%h1
ISBNs
%h6
= semantic_form_for :edit_multiple_isbns, :url => edit_multiple_isbns_path do
%table
= will_paginate
%tr
%th
= sortable "title", "Title"
- @isbns.each do |isbn|
%tr
%td
= check_box_tag "isbn_ids[]", isbn.id
%td
= link_to isbn.title, isbn
%table
%tr
= select_tag :field, options_for_select([["All Fields", ""], ["Name", "name"], ["Price", "price"], ["Category", "category_id"], ["Discontinued", "discontinued"]])
= submit_tag "Edit Checked"
контроллер isbns:
def edit_multiple
@isbns = Isbn.find(params[:isbn_ids])
end
def update_multiple
@isbns = Isbn.find(params[:isbn_ids])
@isbns.each do |isbn|
isbn.update_attributes!(params[:isbn])
end
flash[:notice] = "Updated titles!"
redirect_to isbns_path
end
маршруты:
resources :isbns do
collection do
post 'edit_multiple'
put 'update_multiple'
end
end
Isbn модель:
has_many :productcodes, :dependent => :destroy
accepts_nested_attributes_for :productcodes, :allow_destroy => true
И, наконец, _formfields.html.haml, часть, которая выдает ошибку:
%a{:name => "Identifiers"}
%h6 Identifiers
#this works fine...
= f.inputs :name => "Identifier Information", :class => "main" do
%li.tip
= tooltip(:istc_id, :hover)
= f.input :istc_id, :label_method => :title_title_text, :as => :select, :collection => Istc.all
#this nested one throws the error...
%br
%li.tip
= link_to_add_association 'Add product codes', f, :productcodes
= f.semantic_fields_for :productcodes do |productcode|
= render 'productcode_fields', :f => productcode
%br
А вот его частичные _productcodes:
.nested-fields
= f.inputs do
%br
%li.tip
= tooltip(:test, :hover)
= f.input :idvalue, :label => "Product code"
%br
%li.tip
= tooltip(:test, :hover)
= f.input :idtype, :label => "Product code type", :as => :select, :collection => Identifier.all, :value_method => :code
%li.list
= link_to "Edit list", identifiers_path
%br
%li.tip
.links
= link_to_remove_association "Remove product code", f
Другие ответы предложили изменить semantic_form_for :isbn на переменную экземпляра, но в этом случае выдается:
undefined method `model_name' for NilClass:Class
Обновление //
Код в ответе ниже уступает правилам хамла и создает одну форму для каждой записи в шоу edit_multiple. Это решается с помощью этой настройки:
= semantic_form_for :isbn, :url => {:controller => 'isbns', :action => 'update_multiple'}, :html=>{:method=>:put} do |f|
%ul
- for isbn in @isbns
%li
= hidden_field_tag "isbn_ids[]", isbn.id
= isbn.descriptivedetail_titledetail_titleelement_titlewithoutprefix
= f.fields_for 'isbns[]', isbn do |ff|
= render 'formfields', :f => ff
= submit_tag "Submit"
Но при отправке я получаю эту ошибку:
500 Internal Server Error
If you are the administrator of this website, then please read this web application's log file and/or the web server's log file to find out what went wrong.
И в журналах написано:
Error during failsafe response: ActionView::Template::Error
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/activesupport-3.0.6/lib/active_support/whiny_nil.rb:48:in `method_missing'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/http/parameters.rb:10:in `parameters'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb:3:in `___sers__mma__rvm_gems_ruby_______p____rails_tutorial_gems_actionpack_______lib_action_dispatch_middleware_templates_rescues_diagnostics_erb___945168515264926955_2203247360__4560118438262045809'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_view/template.rb:135:in `block in render'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/activesupport-3.0.6/lib/active_support/notifications.rb:54:in `instrument'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_view/template.rb:127:in `render'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_view/render/rendering.rb:59:in `block in _render_template'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/activesupport-3.0.6/lib/active_support/notifications.rb:52:in `block in instrument'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/activesupport-3.0.6/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/activesupport-3.0.6/lib/active_support/notifications.rb:52:in `instrument'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_view/render/rendering.rb:56:in `_render_template'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_view/render/rendering.rb:26:in `render'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/haml-3.1.2/lib/haml/helpers/action_view_mods.rb:13:in `render_with_haml'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/middleware/show_exceptions.rb:88:in `rescue_action_locally'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/middleware/show_exceptions.rb:68:in `render_exception'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/middleware/show_exceptions.rb:59:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.6/lib/rails/rack/logger.rb:13:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/rack-1.2.3/lib/rack/runtime.rb:17:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/activesupport-3.0.6/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/rack-1.2.3/lib/rack/lock.rb:11:in `block in call'
<internal:prelude>:10:in `synchronize'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/rack-1.2.3/lib/rack/lock.rb:11:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/middleware/static.rb:30:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.6/lib/rails/application.rb:168:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.6/lib/rails/application.rb:77:in `method_missing'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.6/lib/rails/rack/log_tailer.rb:14:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/rack-1.2.3/lib/rack/content_length.rb:13:in `call'
/Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/rack-1.2.3/lib/rack/handler/webrick.rb:52:in `service'
/Users/Emma/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
/Users/Emma/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
/Users/Emma/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
Started POST "/isbns/update_multiple" for 127.0.0.1 at 2011-07-08 13:01:12 +0100
TypeError (expected Array (got Hash) for param `isbns'):
Rendered /Users/Emma/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/actionpack-3.0.6/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (0.8ms)
/////////////
Обновление: частично работает, но не для вложенных моделей с существующими записями до действия обновления, которое выдает:
Couldn't find Productcode with ID=13495 for Isbn with ID=3438
Контроллер Isbns:
def update_multiple
@isbns = Isbn.find(params[:isbn_ids])
@isbns.each do |isbn|
isbn.send :attributes=, params[:isbn][:isbns], false
isbn.save!
end
flash[:notice] = "Updated titles!"
redirect_to isbns_path
end
Isbn модель:
attr_accessible: isbns_attributes # странно, так как это модель isbn, но, черт возьми, она работает.
_edit_multiple в представлении isbns:
= semantic_form_for :isbn, @isbn, :url => {:controller => 'isbns', :action => 'update_multiple'}, :html=>{:method=>:put} do |f|
%ul
- for isbn in @isbns
%li
= hidden_field_tag "isbn_ids[]", isbn.id
= isbn.descriptivedetail_titledetail_titleelement_titlewithoutprefix
= f.fields_for 'isbns', isbn do |ff|
= render 'formfields', :f => ff
= submit_tag "Submit"