Question

如果是，我试图隐藏我的“添加朋友”链接 - current_user和@user是朋友 - 有待处理的朋友请求
- current_user和@user具有相同的id（同一用户）

如果current_user和@user是朋友，则不会显示“添加朋友”链接。问题是当有待处理的朋友请求时。我提交好友请求后仍然会看到“添加好友”链接。

我认为这些条件有问题吗？

当我在控制台中运行这两个条件时： current_user.pending_friends.include?(@user)和@user.pending_friends.include?(current_user)，即使我的数据库显示待处理请求，我也会收到错误。

以下是我的观点：

用户/ show.html.erb

<% if signed_in? %>
  <% if @user == current_user || current_user.friends.include?(@user) 
        || current_user.pending_friends.include?(@user) 
        || @user.pending_friends.include?(current_user)  %>


   <% else %>      

    <%= link_to  friendships_path(:user_id => current_user.id, 
            :friend_id => @user.id), :method => :post, :action => 'create' do %>

    Add Friend

    <% end %>
  <% end %>
<% end %>

用户模型

has_many :friendships

has_many :inverse_friendships, 
 :class_name => "Friendship", 
 :foreign_key => "friend_id"

has_many :direct_friends, 
 :through => :friendships, 
 :conditions => "status = 'accepted'", 
 :source => :friend

has_many :inverse_friends, 
 :through => :inverse_friendships, 
 :conditions => "status = 'accepted'", 
 :source => :user

has_many :pending_friends, 
 :through => :friendships, 
 :conditions => "status = 'pending'", 
 :foreign_key => "user_id", 
 :source => :user   #this line is incorrect. see correction below.

has_many :requested_friends, 
 :through => :friendships,
 :source => :friend, 
 :conditions => "status = 'requested'"

def friends
  direct_friends | inverse_friends
end

以下是来自我的友谊控制器的创建动作，所以你们可以看到如何在数据库中创建关系：

def create
  @user = User.find(current_user)
  @friend = User.find(params[:friend_id])
  params[:friendship1] = {:user_id => @user.id, :friend_id => @friend.id, :status => 'pending'}
  params[:friendship2] = {:user_id => @friend.id, :friend_id =>@user.id, :status => 'requested'}
  @friendship1 = Friendship.create(params[:friendship1])
  @friendship2 = Friendship.create(params[:friendship2])

  if @friendship1.save && @friendship2.save
    flash[:success] = "Friend request submitted."
    redirect_to @friend
  else 
    flash[:error] = "Friend request failed."
    redirect_to @friend
  end  
end

感谢您的期待！

编辑：发现我的错误并在下面发布了答案。

来源：pending_friends应该是：friend，not：user。以下更正。

has_many :pending_friends, 
:through => :friendships, 
:conditions => "status = 'pending'", 
:foreign_key => "user_id", 
:source => :friend

Answer 1

我建议您为这些关联添加单元测试，因为它们看起来很复杂且不易理解。

添加灯具：

# test/fixtures/users.yml
current_user: 
  id: 1
  name: Current User
another_user:
  id: 2 
  name: Your friend

# test/fixtures/friendships.yml
pending_friend:
  id: 1
  status: pending
  user_id: 1 # 
  # other attributes
requested_friend:
  id: 2
  status: requested
  user_id: 2 # 
  # other attributes

编写单元测试代码，告诉自己关联是正确的：

# test/model/user_test.rb
class UserTest <  # extend Rails unit test class
  def test_the_requested_friendship 
    assert users(:current_user).requested_friends.include?( users(:another_user))
  end
  def test_the_pending_friendships
    # your assertion here
  end
end

注意：上面的代码只是一个想法，我还没有对它们进行测试。你应该自己实现你的代码。

我建议您使用“rspec”，因为它比传统的测试单元更具表现力。

在待处理的好友请求（友情关系模型）中查看未隐藏“添加好友”链接

1 个答案: