Question

我有一个rails应用，当用户点击“喜欢”链接时，用户可以like post，“喜欢”链接会更改为“不喜欢”链接（使用渲染部分）它可以创建一个like的记录，它的工作保存到数据库，我可以看到部分已经在日志上呈现但部分未在视图上显示也删除了“喜欢”链接。

Started POST "/like" for 127.0.0.1 at 2014-07-01 16:45:48 +0700
  ←[1m←[35mUser Load (1.0ms)←[0m  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
Processing by HomesController#create_like as JS
  Parameters: {"utf8"=>"V", "authenticity_token"=>"kRfosGW9Qsv3e8VH8MU/X/EyLVoJ/ya8T3Abwv7qNwg=", "like"=>{"post_id"=>"4"}}
  ←[1m←[36m (0.0ms)←[0m  ←[1mBEGIN←[0m
  ←[1m←[35mSQL (1.0ms)←[0m  INSERT INTO "likes" ("created_at", "post_id", "updated_at", "user_id") VALUES ($1, $2, $3, $4) RETURNING "id"  [["created_at", Tue, 01 Jul 2014 09:45:48 UTC +00:00], ["post_id", 4], ["updated_at", Tue, 01 Jul 2014 09:45:48 UTC +00:00], ["user_id", 1]]
  ←[1m←[36mPost Load (1.0ms)←[0m  ←[1mSELECT "posts".* FROM "posts" WHERE "posts"."id" = 4 LIMIT 1←[0m
  ←[1m←[35mSQL (1.0ms)←[0m  UPDATE "posts" SET "count_like" = COALESCE("count_like", 0) + 1 WHERE "posts"."id" = 4
  ←[1m←[36m (1.0ms)←[0m  ←[1mCOMMIT←[0m
  ←[1m←[35mPost Load (1.0ms)←[0m  SELECT "posts".* FROM "posts" WHERE "posts"."id" = $1 LIMIT 1  [["id", 4]]
  Rendered homes/_like_dislike.html.erb (0.0ms)
  Rendered homes/create_like.js.erb (6.0ms)
Completed 200 OK in 42.0ms (Views: 31.0ms | ActiveRecord: 5.0ms)

当我尝试重新加载/刷新浏览器时，显示“不喜欢”链接。

这个_posts.html.erb文件

<div class="perpost-content" id="<%= dom_id(post) %>">
    <div class="perpost-body"><p><%= post.body %></p></div>
    <div class="perpost-footer">
        <ul class="inline">
            <li id="like_<%= dom_id(post) %>">
                <%= render 'like_dislike', :post => post %>
            </li>
            <% if post.user_id == current_user.id %><li><%= link_to "delete", destroy_post_path(post), method: :delete, data: {confirm: "yakin akan dihapus?"}, :remote => true %></li><% end %>
        </ul>
    </div>
</div>

_like_dislike.html.erb档案

<% @base_secure = SecureRandom.urlsafe_base64 %>
<% if post.liked_by? current_user %>
    <%= link_to "dislike", destroy_like_path(post.likes.where(:user_id => current_user.id).first.id), method: :delete, data: {confirm: "yakin akan dihapus?"}, :remote => true %>
<% else %>
    <%= form_for Like.new, :url => { :action => "create_like" }, :html => {:id => "send_like_"+ @base_secure}, :remote => true do |f| %>
        <%= f.hidden_field :post_id, :value => post.id %>
        <%= link_to 'like', "#", :onclick => "$('#send_like_"+ @base_secure +"').submit()" %>
    <% end %>
<% end %>

create_like.js.erb

$('#like_<%= dom_id(@post) %>').empty().append('<%= j render :partial => "homes/like_dislike", :collection => @post, :as => :post %>');

对create_like

的

homes_controller.rb行动

def create_like
  @like = Like.new(params[:like])
  @like.user_id = current_user.id
  @like.save
  @post_id = params[:like][:post_id].to_i
  @post = Post.find(@post_id)
   respond_to do |format|
     format.js
   end  
end

Answer 1

Baloo说＆＃34;你将它作为create_like.js中的一个集合呈现，但你只有一个对象。＆＃34;所以我试着改变这个

$('#like_<%= dom_id(@post) %>').empty().append('<%= j render :partial => "homes/like_dislike", :collection => @post, :as => :post %>');

到

$('#like_<%= dom_id(@post) %>').empty().append('<%= j render :partial => "homes/like_dislike", :locals => {:post => @post } %>');

Action View Partials Rails 3.2.18

渲染部分未显示

1 个答案: