我正在尝试将跟随和取消关注表单呈现为rails视图
Create.js.erb(我的问题在这里,因为这是错误的代码只作用于CSS而不是rails表格,我似乎无法处理它D:)
$('.btn-danger').attr('class', 'btn')
.val('Following')
.attr('id', 'btn-unfollow');
destroy.js.erb(这也是错误的代码只作用于CSS,而不是rails表格)
$('.btn').attr('class', 'btn-danger')
.val('unfollowed')
.attr('id', 'btn-follow');
my Postsindex.html.erb
<% @posts.each do |f| %>
<%= f.headline %>
<%- f.text %>
<% if current_user.id != f.user.id %>
<% if !current_user.following?(f.user) %>
<%= form_for(current_user.active_relationships.build, remote: true) do |s| %>
<div> <%= hidden_field_tag :followed_id, f.user.id %> </div>
<%= s.button "follow", class: "btn btn-danger", id: "follow-btn" %>
<% end %>
<% else %>
<%= form_for(current_user.active_relationships.find_by(followed_id: f.user.id), :html => {method: :delete}, remote: true) do |s| %>
<%= s.button "unfollow", class: "btn", id: "unfollow-btn", remote: true %>
<% end %>
<% end %>
<% end %>
<% end %>
发布控制器:
class PostsController < ApplicationController
def new
@post = Post.new
end
def index
@posts = post.all
end
end
唯一的问题是跟随和取消关注不是局部的,而是在同一页面上,所以如果我能分别渲染它们,我会感激...
答案 0 :(得分:0)
我会为你的情况做下面的事情。希望您也能发现该解决方案也很有用。
followersController
。它将处理所有跟随/取消关注的相关活动。 (我相信你也创造了一个模型):js
回复视图controller > create
方法。创建后,通过呈现名为create.js.erb
的js文件并编写适当的代码来更改视图。controller > destroy
方法。创建后,通过呈现名为destroy.js.erb
的js文件并编写适当的代码来更改视图。id
,以便在js文件中轻松处理selectors
。 在 create.js.erb 文件中,您应该执行以下操作:
$('#follow_button_parent_div').html("<%=j render partial: 'unfollow_button_html_file' %>")
在 _unfollow_button_html_file.html.erb 中,使用取消关注按钮编写<form></form>
作为提交以销毁最近创建的关注记录。
对于销毁部分,相应地修改代码。
答案 1 :(得分:0)
我会做这样的事情。请更改以适应数据库中的模型和字段
帖子视图 我会建立两个链接来关注或取消关注。只有一个是可见的(取决于帖子的作者,如果我已经跟随他)。这些链接将使ajax帖子跟随/取消关注帖子的作者并将切换链接(隐藏自己并显示其他链接)
<% @posts.each do |post| %>
<%= post.headline %>
<%- post.text %>
<% if current_user.id != post.user.id %>
<%= render partial: 'follow_links', locals: { user: post.user }
<% end %>
<% end %>
部分follow_links。
<% show_follow_link = current_user.following?(user) ? 'hidden' : '' %>
<% show_unfollow_link = current_user.following?(user) ? '' : 'hidden' %>
<!-- links to follow/unfollow have data-attributes that include the path to make the ajax post and the user to follow, that is used to find the link to show after the ajax call -->
<%= link_to 'Follow', '#', { class: 'follow-user btn-success #{show_follow_link}', "data-url": follow_user_path(user.id), "data-followee": user.id } %>
<%= link_to 'Unfollow', '#', { class: 'unfollow-user btn-danger #{show_unfollow_link}', "data-url": unfollow_user_path(user.id), "data-followee": user.id } %>
部分
的Javascript$('.follow-user').on("click",function() {
target = $(this)
url = target.attr('data-url')
followee = target.attr('data-followee')
other_button = $('.unfollow-user[data-followee="'+followee+'"]')
$.ajax( {
url: url,
type: 'post',
success: function() {
target.addClass('hidden');
other_button.removeClass('hidden');
},
error: function(ret) {
alert(ret.responseJSON.error);
}
});
});
$('.unfollow-user').on("click",function() {
target = $(this)
url = target.attr('data-url')
followee = target.attr('data-followee')
other_button = $('.follow-user[data-followee="'+followee+'"]')
$.ajax( {
url: url,
type: 'post',
success: function() {
target.addClass('hidden');
other_button.removeClass('hidden');
},
error: function(ret) {
alert(ret.responseJSON.error);
}
});
UsersController(关注和取消关注的新方法)
def follow
if !current_user
render json: { :error => 'You must log in' }, :status => :unprocessable_entity
return
end
who_to_follow = User.find_by id: params[:id]
if !who_to_follow
render json: { :error => 'User not found' }, :status => :not_found
return
end
# Change user_id by the field in the relationship that links to the followee
followee = current_user.active_relationships.create(user_id: who_to_follow.id)
render json: who_to_follow, :status => :ok
return
end
def unfollow
if !current_user
render json: { :error => 'You must log in' }, :status => :unprocessable_entity
return
end
who_to_unfollow = User.find_by id: params[:id]
if !who_to_unfollow
render json: { :error => 'User not found' }, :status => :not_found
return
end
# Change user_id by the field in the relationship that links to the followee
unfollowee = current_user.active_relationships.find_by user_id: who_to_unfollow.id
if !unfollowee
render json: { :error => 'You are not following this user' }, :status => :unprocessable_entity
return
end
unfollowee.destroy
render json: who_to_unfollow, :status => :ok
return
end
添加路线
post "/users/:id/follow" => 'users#follow', :as => :follow_user
post "/users/:id/unfollow" => 'users#unfollow', :as => :unfollow_user