collection_select字段嵌套形式rails 3.1

Question

我有 3 个模型，第一个 user.rb：

class User
 has_many :boards, dependent: :destroy
 has_many :posts, dependent: :destroy, :autosave => true
 accepts_nested_attributes_for :boards
 accepts_nested_attributes_for :posts
end

第二个模型是 board.rb

class Board
 has_many :posts, :dependent => :destroy , :autosave => true
 accepts_nested_attributes_for :posts
 belongs_to :user
end

第三个模型是 post.rb

class Post
 belongs_to :user
 belongs_to :board
end

我想用 parent 创建一个新帖子board 在我的操作中，来自 posts_controllers 的新操作我有：

@post = Post.new
respond_to do |format|
  format.html # new.html.erb
  format.json { render json: @post }
end

我创建了一个新板：

def create
  @board = current_user.boards.new(params[:board])
   respond_to do |format|
    if @board.save
      format.html { redirect_to @board, notice: 'Board was successfully created.' }
      format.json { render json: @board, status: :created, location: @board }
    else
      format.html { render action: "new" }
      format.json { render json: @board.errors, status: :unprocessable_entity }
    end
  end
end

在部分_form.thml.erb中我有这个：

<%= form_for(@post, :html => {:multipart => true}) do |f| %>
<%= f.label :content %><br />
<%= f.text_area :content %>
<%= f.collection_select :board_id, Board.all, :id, :name%>
<%= f.submit %>
<% end %>

问题是在我的选择字段中出现每个板。 我只想显示和选择属于当前用户的图板。

注意我正在使用 mongoid。

Answer 1

您的模型可以更简单。

class User
 has_many :boards, dependent: :destroy
 accepts_nested_attributes_for :boards
end

class Board
 has_many :posts, :dependent => :destroy , :autosave => true
 belongs_to :user
 accepts_nested_attributes_for :posts
end

class Post
 belongs_to :board
end

<%= form_for(@post, :html => {:multipart => true}) do |f| %>
<%= f.label :content %><br />
<%= f.text_area :content %>
<%= f.collection_select :board_id, Board.find_by_user_id(current_user.id), :id, :name%>
<%= f.submit %>
<% end %>