has-many-through

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has_one :through => multiple

Both Attendment & Vouching: belongs_to :event belongs_to :account Therefore: 1 to 1 relationship between attendments and vouchings.[详细]

2023-03-26 07:21 分类：问答
CakePHP how to define two of the same models through another join table with hasMany through

I would like to use hasMany through relationship to connect two users 开发者_运维问答through a model invitations[详细]

2023-03-25 11:02 分类：问答
Rails: ActiveRecord Query for has_many :through model

How to query for Companies with a certai开发者_运维知识库n Branch in a \"has_many :through\" relationship?[详细]

2023-03-25 10:25 分类：问答
How can I expand the scope for validates_uniqueness_of, beyond columns for the given model?

A country has many states, and a state has many cities. I want to ensure that no two cities in the same country have the same name.[详细]

2023-03-25 09:26 分类：问答
find_or_initialize_by and has_many :through

I have an xml file the user imports data from. This creates a record in the Player model. At the same time, I want a record to be created in the Membership association.[详细]

2023-03-24 03:46 分类：问答
How Do I Parse a Text Field and then Write it to Multiple Models in Ruby on Rails?

I have simple project+task application I am creating in Rails 3.1.RC4. It will have project names, tasks and each task will be assigned to a person. The project form is simple with only two boxes (1)[详细]

2023-03-22 16:09 分类：问答
Access join-model on .build with has_many, :through

Is there any way to access the join model of a \"has_many, :through =>\" association that is created on \".build\"?[详细]

2023-03-22 03:22 分类：问答
acl9 has_many through implementation

I got the following deprecation warning on the rails console: DEPRECATION WARNING: Having additional attributes on the join table of a[详细]

2023-03-20 20:23 分类：问答
Rails: Using accepts_nested_attributes_for in Nested Model Form

In my app, Users have many Conversations, and Conversations have many Messages. I want to create a new Conversation: I have to specify the Users (readers) and the (first) Message. I tried the followin[详细]

2023-03-20 18:34 分类：问答
Rails Associations - has_many => :through - but same model

What I am trying to do: I have a blog and want to show related p开发者_StackOverflow中文版osts below the main post.[详细]

2023-03-17 08:36 分类：问答