如何喜欢用户资料

Question

所以，我有一个具有用户配置文件的用户的应用程序。我希望能够喜欢一个用户配置文件，这将添加到我的收藏标签中。我已经写了以下代码，但是我遇到了此错误：

ActiveRecord::StatementInvalid (PG::UndefinedTable: ERROR:  relation "favorites_users" does not exist
2014-02-04T02:18:56.217171+00:00 app[web.1]: LINE 5:                WHERE a.attrelid = '"favorites_users"'::regcl...
                             ^

现在我有以下代码：

fairm.rb

class Favorite < ActiveRecord::Base
    has_and_belongs_to_many :users
end

fairites_controller.rb

class FavoritesController < ApplicationController
 before_filter :find_user
  def index
    @favorites = @user.favorites
  end
  def create
    @user = User.find params[:id]
    @user.favorites << @user
  def
  def destroy
    @favorite = @user.favorites.find_by_user_id params[:id]
    @favorite.destroy unless @favorite.blank?
  end
  end
  private
  def find_user
    @user = current_user
  end
end

fairite.html.erb

<div class="row">
  <%= render 'layouts/left_side' %>
  <div role="main" class="col-md-6">
    <div class="visitors-m">
      <div class="col-md-12 showing">
        <div class="row">
          <div class="col-md-12">
            <h4><%= pluralize(@favorites.size, 'favorites') %></h4>
            <div class="col-md-3 row fr">
              <select class="form-control">
                <option value="">SORT BY</option>
                <option value="1">General</option>
                <option value="2">News</option>
                <option value="3">Media</option>
                <option value="4">Funny</option>
              </select>
            </div>
          </div>
        </div>
      </div>

      <%#= @favorites.map(&:name).to_sentence %>

      <% @favorites.each do |favorite| %>
      <div class="col-md-12 users_info visitors">
        <div class="row">
          <div class="col-md-12">
            <div class="img-thumbnail">
              <% if favorite.profile_image.present? %>
                <%= image_tag(favorite.profile_image_url(:thumb), size: '100x100') %>
              <% else %>
                <%= image_tag("people_image.jpg") %>
              <% end %>
            </div>
            <div class="users_about_info">
              <h4><%= visitor.name %></h4>
              <p class="visit-time">
                <%= timeago_tag(current_user.visits.where(favorite: favorite).first.visited_at) %>
              </p>
            </div>
            <div class="fr">
              <p><%= favorite.address %></p>
              <p><%= favorite.age %> years old</p>
            </div>
            <div class="clr"></div>
          </div>
        </div>
      </div>
      <% end %>
    </div>
  </div>
  <%= render 'users/visitors_filter' %>
</div>

收藏夹迁移

class CreateFavorites < ActiveRecord::Migration
  def change
    create_table :favorites do |t|
      t.timestamps
    end
  end
end

Answer 1

fairite_users不是在喜欢的人或用户下的列，自然，您会收到该错误。您需要致电：

User.find(1).favourites

或

Favourite.find(1).users

您的收藏夹实现是可以的，假设您只有1个喜欢的人（faster的语法用途。用户可以喜欢1个以上的用户配置文件，然后您需要喜欢的关系。

让我知道您是否需要实施帮助。

编辑

模型

class User <ActiveRecord::Base
has_many :favourite_relationships
has_many :favourites, through: :favourite_relationships
has_many :people_who_favourited_me, through: :favourite_relationships, foreign_key: "favourite_id"
end
class FavouriteRelationships <ActiveRecord::Base
# attributes are ( user_id and favourite_id )
belongs_to :favourite
belongs_to :user
end
class Favourite < ActiveRecord::Base
has_many :favourite_relationships
has_many :users, through: :favourite_relationships
end

友善地将用户ID作为当前用户ID和喜欢的ID作为参数以创建喜爱的参数。

<% form_for Favourite.new do |f| %> 
 <%= f.hidden_field :user_id, value: current_user.id %>
etc....

并用该表格创建最爱。