问题描述
组织和用户有很多-to-many关联到关系。起初我这实现了一个1-to-many关联，它的工作，但现在我需要它成为一个经过多次-to-many关联。所以，我创建了相关模型和模型文件改变了关联。
组织接受嵌套的用户属性在我的应用我有两个一个加盟申请表。另外，我用它在我的种子文件：
Organization.create（名称：名称，...）！users.create（电子邮件：[email protected]，...）
这工作时，这是一个1-to-many关联，但现在它是一个多一对多通过协会，它产生于无欲无求的错误：
验证失败：成员不能为空，主持人不能为空
这是指，为相关模型变量通过用户和组织相关联。
是什么原因导致这个错误;为什么这些价值观空白？是 Organization.create 行可能不正确的使用many-to-many关联？ 成员和主持人有默认值（见迁移文件）。我希望它创建组织，用户和关系使用默认值。我怎么回事，应建立一个新的组织和用户？
本组织模型：
的has_many：关系，依赖：摧毁
的has_many：用户，通过：关系accepts_nested_attributes_for：关系：reject_if =＆GT; ：all_blank，：allow_destroy =＆GT;真正
validates_associated：用户
关系模式：
belongs_to的：组织
belongs_to的：用户
accepts_nested_attributes_for：用户validates_ presence_of：组织
validates_ presence_of：用户
验证：会员，presence：真
验证：主持人，presence：真
用户模型：
的has_many：关系，依赖：摧毁
的has_many：组织，通过：人际关系，inverse_of：用户
的关系迁移：
类CreateRelationships＆LT; ActiveRecord的::迁移
高清变化
CREATE_TABLE：关系做| T |
t.belongs_to：用户指标：真
t.belongs_to：组织，指数：真 t.boolean：成员，空：假的，默认值：false
t.boolean：主持人，空：假的，默认值：false
t.timestamps空：假的
结束
add_index：人际关系，[：USER_ID，：organization_id]，独特的：真
结束
结束
我觉得你的问题，也许你还没有指定一个外键为用户模型的has_many关系。尝试：
的has_many：人际关系，foreign_key：organization_id，取决于：摧毁
这唯一标识每个关系的组织，你的用户模型。
Organization and User have a many-to-many association through Relationship. Initially I implemented this a 1-to-many association, which worked but now I need it to become a many-to-many through association. So I created the Relationship model and changed the association in the model files.
Organization accepts nested attributes for User as in my app I have a joined signup form for the two. Also, I use it in my seeds file:
Organization.create!(name: "name", ...).users.create(email: "[email protected]", ...)
This worked when it was a 1-to-many association but now it is a many-to-many through association, it produces upon seeding the error:
Validation failed: Member can't be blank, Moderator can't be blank
This refers to variables for the Relationship model, through which User and Organization are associated.
What causes this error; why are these values blank? Is the Organization.create line perhaps incorrect for a many-to-many association? member and moderator have default values (see migration file). I would expect it to create the organization, user, and relationship with default values. How else should I be creating a new organization and user?
The Organization model:
has_many :relationships, dependent: :destroy
has_many :users, through: :relationships
accepts_nested_attributes_for :relationships, :reject_if => :all_blank, :allow_destroy => true
validates_associated :users
The Relationship model:
belongs_to :organization
belongs_to :user
accepts_nested_attributes_for :user
validates_presence_of :organization
validates_presence_of :user
validates :member, presence: true
validates :moderator, presence: true
The User model:
has_many :relationships, dependent: :destroy
has_many :organizations, through: :relationships, inverse_of: :users
The relationship migration:
class CreateRelationships < ActiveRecord::Migration
def change
create_table :relationships do |t|
t.belongs_to :user, index: true
t.belongs_to :organization, index: true
t.boolean :member, null: false, default: false
t.boolean :moderator, null: false, default: false
t.timestamps null: false
end
add_index :relationships, [:user_id, :organization_id], unique: true
end
end
I think your problem maybe that you haven't specified a "foreign key" for the has_many relationships in User Model. Try:
has_many :relationships, foreign_key: "organization_id", dependent: :destroy
This uniquely identifies an organization per relationship with your user model.
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