我可以通过 ajax 更新喜欢和不喜欢的按钮,但我无法更新喜欢计数。
发布has_many
喜欢
likes_controller.rb
def create
@like = Like.new(:post_id => params[:post_to_be_liked])
if @like.save
respond_to do |format|
format.html {redirect_to :back, notice: "Liked!"}
format.js
end
end
end
视图.html.erb
<% @post = user.posts.first %>
<div id="send_like_for_<%= @post.id %>">
<% if @post.is_liked?(@post, current_user)%>
<%= render 'unlike'%>
<%else%>
<%= render 'like'%>
<%end%>
</div>
<div id="liked_<%= @post.id %>" %>
<%= render 'liked_users'%>
</div>
创建.js.erb
$("#send_like_for_<%= params[:post_to_be_liked]%>").html("<%= escape_javascript(render('users/unlike')) %>")
$("#liked_<%= params[:post_to_be_liked]%>").html("<%= escape_javascript(render('users/liked_users')) %>")
_like.html.erb
<%= link_to "LIKE", likes_path(:post_to_be_liked => @post.id), remote: true, :method=>:post %>
_unlike.html.erb
<span> UNLIKE </span>
_liked_users.html.erb
<%= "#{@post.likes.length} like this" %>
喜欢/不喜欢功能工作得很好,当有人喜欢帖子时,按钮会变为不喜欢。但是点赞数并没有增加。