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mark

2010-Jan-26 00:34 UTC

accepts_nested_attributes_for :has_many :through => ''bug?''

Hey guys & ladies!

I''ve got the following relationship which i''m trying to get
accepts_nested_attributes to work with. But when i submit my form, it
looks as if its expecting a Company object, rather than an array of
companies. which really doesn''t make sense considering its a
has_many :relationship.

So what i''m after, is a way to
accept_nested_attributes_for :companies, so when my users sign up to
the website, they can also create a company.

-------------- user.rb

class User < ActiveRecord::Base
  has_many :company_users
  has_many :companies, :through => :company_users

  accepts_nested_attributes_for :companies
end

-------------- company.rb

class Company < ActiveRecord::Base
  has_many :company_users
  has_many :users, :through => :company_users
end

--------------  company_user.rb
class CompanyUser < ActiveRecord::Base
  belongs_to :user
  belongs_to :company
end


--------------  My form

<% form_for :user, :url => users_path do |f| -%>

<p><%= label_tag ''First name'' %>
<%= f.text_field :firstname %></p>

<p><%= label_tag ''Surname'' %>
<%= f.text_field :surname %></p>

<p><%= label_tag ''email'' %>
<%= f.text_field :email %></p>

<p><%= label_tag ''password'' %>
<%= f.password_field :password %></p>

<p><%= label_tag ''password_confirmation'',
''Confirm Password'' %>
<%= f.password_field :password_confirmation %></p>

	<h2>Company Information</h2>
	<% f.fields_for :companies do |company| %>
	 		<%= render ''companies/fields'', :f => company %>
	 <% end %>

<p class="submit"><%= submit_tag ''Sign up''
%></p>
<% end -%>


--------------  The error

 ActiveRecord::AssociationTypeMismatch in UsersController#create

Company(#2180266380) expected, got Array(#2148226700)

RAILS_ROOT: /Users/mark/Programming/ruby/s/

/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_proxy.rb:263:in `raise_on_type_mismatch''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_collection.rb:320:in `replace''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_collection.rb:320:in `each''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_collection.rb:320:in `replace''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations.rb:1322:in `companies=''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2744:in `send''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2744:in `attributes=''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2740:in `each''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2740:in `attributes=''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2438:in `initialize''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:1331:in `send''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:1331:in `perform_action_without_filters''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
filters.rb:617:in `call_filters''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
filters.rb:610:in `perform_action_without_benchmark''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue''
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/
core_ext/benchmark.rb:17:in `ms''
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/
core_ext/benchmark.rb:17:in `ms''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
rescue.rb:160:in `perform_action_without_flash''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
flash.rb:146:in `perform_action''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:532:in `send''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:532:in `process_without_filters''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
filters.rb:606:in `process''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:391:in `process''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:386:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
routing/route_set.rb:437:in `call''

/Users/mark/Programming/ruby/s/app/controllers/users_controller.rb:
27:in `new''
/Users/mark/Programming/ruby/s/app/controllers/users_controller.rb:
27:in `create''
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/
1.8/benchmark.rb:308:in `realtime''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:87:in `dispatch''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:121:in `_call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:130:in `build_middleware_stack''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:114:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:108:in `call''

/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_proxy.rb:263:in `raise_on_type_mismatch''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_collection.rb:320:in `replace''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_collection.rb:320:in `each''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations/association_collection.rb:320:in `replace''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
associations.rb:1322:in `companies=''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2744:in `send''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2744:in `attributes=''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2740:in `each''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2740:in `attributes=''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
base.rb:2438:in `initialize''
/Users/mark/Programming/ruby/s/app/controllers/users_controller.rb:
27:in `new''
/Users/mark/Programming/ruby/s/app/controllers/users_controller.rb:
27:in `create''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:1331:in `send''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:1331:in `perform_action_without_filters''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
filters.rb:617:in `call_filters''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
filters.rb:610:in `perform_action_without_benchmark''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue''
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/
core_ext/benchmark.rb:17:in `ms''
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/
1.8/benchmark.rb:308:in `realtime''
/Library/Ruby/Gems/1.8/gems/activesupport-2.3.4/lib/active_support/
core_ext/benchmark.rb:17:in `ms''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
benchmarking.rb:68:in `perform_action_without_rescue''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
rescue.rb:160:in `perform_action_without_flash''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
flash.rb:146:in `perform_action''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:532:in `send''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:532:in `process_without_filters''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
filters.rb:606:in `process''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:391:in `process''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
base.rb:386:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
routing/route_set.rb:437:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:87:in `dispatch''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:121:in `_call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:130:in `build_middleware_stack''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
query_cache.rb:29:in `call''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
query_cache.rb:29:in `call''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
connection_adapters/abstract/query_cache.rb:34:in `cache''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
query_cache.rb:9:in `cache''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
query_cache.rb:28:in `call''
/Library/Ruby/Gems/1.8/gems/activerecord-2.3.4/lib/active_record/
connection_adapters/abstract/connection_pool.rb:361:in `call''
/Library/Ruby/Gems/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in `call''
/Library/Ruby/Gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:
24:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
params_parser.rb:15:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
session/cookie_store.rb:93:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
failsafe.rb:26:in `call''
/Library/Ruby/Gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call''
/Library/Ruby/Gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`synchronize''
/Library/Ruby/Gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:114:in `call''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
reloader.rb:34:in `run''
/Library/Ruby/Gems/1.8/gems/actionpack-2.3.4/lib/action_controller/
dispatcher.rb:108:in `call''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/rack/
request_handler.rb:92:in `process_request''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_request_handler.rb:207:in `main_loop''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
railz/application_spawner.rb:400:in `start_request_handler''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
railz/application_spawner.rb:351:in `handle_spawn_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
utils.rb:184:in `safe_fork''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
railz/application_spawner.rb:349:in `handle_spawn_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:352:in `__send__''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:352:in `main_loop''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:196:in `start_synchronously''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:163:in `start''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
railz/application_spawner.rb:209:in `start''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
spawn_manager.rb:262:in `spawn_rails_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server_collection.rb:126:in `lookup_or_add''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
spawn_manager.rb:256:in `spawn_rails_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server_collection.rb:80:in `synchronize''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server_collection.rb:79:in `synchronize''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
spawn_manager.rb:255:in `spawn_rails_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
spawn_manager.rb:154:in `spawn_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
spawn_manager.rb:287:in `handle_spawn_application''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:352:in `__send__''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:352:in `main_loop''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/lib/phusion_passenger/
abstract_server.rb:196:in `start_synchronously''
/Library/Ruby/Gems/1.8/gems/passenger-2.2.9/bin/passenger-spawn-server:
61

Request

Parameters:

{"commit"=>"Sign up",
 "user"=>{"password_confirmation"=>"12341234",
 "companies"=>{"name"=>"1234"},
 "firstname"=>"driver",
 "surname"=>"asdf",
 "password"=>"12341234",
 "email"=>"asdf-o5qfY/2Q8gk@public.gmane.org"}}

Show session dump

---

Response

Headers:

{"Content-Type"=>"",
 "Cache-Control"=>"no-cache"}




------------------------------------------------------

Thanks for reading. sorry about the length.

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Matt Jones

2010-Jan-26 19:18 UTC

head link

Re: accepts_nested_attributes_for :has_many :through => ''bug?''

On Jan 25, 7:34 pm, mark
<aussi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Hey guys & ladies!
>
> I''ve got the following relationship which i''m trying to
get
> accepts_nested_attributes to work with. But when i submit my form, it
> looks as if its expecting a Company object, rather than an array of
> companies. which really doesn''t make sense considering its a
> has_many :relationship.
>
> So what i''m after, is a way to
> accept_nested_attributes_for :companies, so when my users sign up to
> the website, they can also create a company.
>
>
[snip]> Parameters:
>
> {"commit"=>"Sign up",
>
 "user"=>{"password_confirmation"=>"12341234",
>  "companies"=>{"name"=>"1234"},
>  "firstname"=>"driver",
>  "surname"=>"asdf",
>  "password"=>"12341234",
>  "email"=>"a...-o5qfY/2Q8gk@public.gmane.org"}}
Your models and forms look OK, but something has gone wrong in the
generated HTML code - the ''companies'' key should be
''companies_attributes'' to trigger the nested attributes stuff.
Can you
post the generated HTML?

--Matt Jones

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mark

2010-Jan-26 21:16 UTC

head link

Re: accepts_nested_attributes_for :has_many :through => ''bug?''

Thanks for having a look Matt, I''ve changed

<% f.fields_for :companies do |company| %>

to

<% f.fields_for :companies_attributes do |company| %>

and i''m no longer getting the "expected object, but got array
error",
now i''m getting
"undefined method `stringify_keys'' for
"test":String" where "test" was
the company name i inputted into the form. Below is the html output of
the form.



		<form action="/users" class="new_user"
id="new_user" method="post">
		<p><label for="First_name">First name</label>
		<input id="user_firstname" name="user[firstname]"
size="30"
type="text" value="" /></p>

		<p><label for="Surname">Surname</label>
		<input id="user_surname" name="user[surname]"
size="30" type="text"
value="" /></p>

		<p><label for="email">Email</label>
		<input id="user_email" name="user[email]"
size="30" type="text" /></
p>

		<p><label for="password">Password</label>
		<input id="user_password" name="user[password]"
size="30"
type="password" /></p>

		<p><label for="password_confirmation">Confirm
Password</label>
		<input id="user_password_confirmation" name="user
[password_confirmation]" size="30" type="password"
/></p>

		<hr />
		<h2>Company Information</h2>

	    <input id="user_companies_attributes_name" name="user
[companies_attributes][name]" size="30" type="text"
/>


		<p class="submit"><input name="commit"
type="submit" value="Sign
up" /></p>
		</form>

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