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首页 > 解决方案 > 用户镜头 - 如何仅显示您关注的用户的镜头（不包括我自己的）

ruby-on-rails - 用户镜头 - 如何仅显示您关注的用户的镜头（不包括我自己的）

问题描述

如何仅显示您关注的用户（不包括我自己的用户）的照片？我认为问题出在提要中，但我是 Rails 的新手，不知道该怎么做。感谢开发者！

从展示页面拍摄

[enter image description here][1]

my user.controller

    class User < ApplicationRecord
friendships, class_name: "Friendship", foreign_key: "follower_id", dependent: :destroy
      has_many :passive_friendships, class_name: "Friendship", foreign_key: "followed_id", dependent: :destroy

      has_many :followings, through: :active_friendships, source: :followed
      has_many :followers, through: :passive_friendships, source: :follower

      #follow another user
      def follow(other_user)
        active_friendships.create(followed_id: other_user.id)
      end

      #Unfollow a other_user
      def unfollow(other_user)
        active_friendships.find_by(followed_id: other_user.id).destroy
      end
      #Is following a other_user?
      def following?(other_user)
        following_ids.include?(other_user.id)
      end

      def feed
        following_ids = "SELECT followed_id FROM Friendships WHERE follower_id = :user_id"
        Shot.where("user_id IN (#{following_ids}) OR user_id = :user_id", user_id: id)
      end

my show.html.erb

      <div class="shots user">
        <% @user.feed.each do|shot|%>
        <section class="section">
          <div class="shot-grid-item">
            <div class="shot-wrapper">
              <%= link_to shot, class: "shot" do %>
              <% if shot.user_shot_url.present? %>
              <%= cl_image_tag(shot.user_shot_url) %>
              <% else %>
              <label><%= shot.description %></label>
              <div class="shot-data">
                <h3 class="shot-title"><%= shot.title %></h3>
                <div class="shot-description"><%= truncate(shot.description, length: 60) %></div>
                <div class="shot-time">
                  <%= time_ago_in_words(shot.created_at) %>
                </div>
              </div>
              <% end %>
              <% end%>
       </div>

标签： ruby-on-railsfeedshow

解决方案

你可以做类似的事情

<%= current_user.followings.shots.each do |shot| %>
<% end %>

更好 - 您可以在控制器中声明一个从视图中提取此逻辑的变量：

@following_shots = current_user.followings.shots

然后在视图中

<%= @following_shots.each do |shot| %>
<% end %>

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