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plurals

PORails relationship.build not working on Many-to-Many
primarykey
Id
5567165
data
AcceptedAnswerId
5569265
AnswerCount
1
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2011-04-06T13:30:08.873
FavoriteCount
1
LastActivityDate
2011-04-06T18:31:32.563
LastEditDate
2011-04-06T18:31:32.563
LastEditorUserId
660549
OwnerUserId
660549
ParentId
0
PostTypeId
1
Score
2
ViewCount
1143
LastEditorDisplayName
text
Body
I have three resources (slight caveat is that User is associated to Devise gem, details of which I've left out since I dont think they're relevant. users <-> memberships <-> groups require 'digest/sha2' <pre><code>class User < ActiveRecord::Base devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable attr_accessible :email, :password, :password_confirmation, :remember_me, :memberships_attributes has_many :memberships has_many :groups, :through => :memberships attr_accessible :memberships accepts_nested_attributes_for :memberships end class Membership < ActiveRecord::Base belongs_to :user belongs_to :group attr_accessible :user, :group end class Group < ActiveRecord::Base has_many :memberships has_many :users, :through=>:memberships end </code></pre> The problem is that build is not using the attributes I'm providing, specifically for group_id. I'm pasting the output of the debugger: <pre><code>(rdb:1903) @user.memberships.build(:group_id=>1) #<Membership id: nil, user_id: 5, group_id: nil, created_at: nil, updated_at: nil> </code></pre> I know the relationships/ORM mappings are good because I can do this: <pre><code>(rdb:1903) @user.memberships.first.group_id=1 1 (rdb:1903) @user.memberships.first #<Membership id: nil, user_id: 5, **group_id: 1**, created_at: nil, updated_at: nil> </code></pre> I've tried this on a simple has_many demo app, and it works fine. <hr> ANSWER: It was solved by updating memberships model to have: <pre><code>attr_accessible :user, :group, :group_id </code></pre>
Tags
<ruby-on-rails>
Title
Rails relationship.build not working on Many-to-Many
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USSyed Ali
UserOwnerUserId
1. USSyed Ali
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 PORails relationship.build not working on Many-to-Many
 UserUserId
 USDylan Markow
 VoteTypeVoteTypeId
 VTFavorite
2. VO
 singulars
 PostPostId
 PORails relationship.build not working on Many-to-Many
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 PORails relationship.build not working on Many-to-Many
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId

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