修正like不同的博客时互相影响的问题

app/assets/javascripts/angularjs/likes.js.coffee

@@ -1,28 +1,37 @@
 @app.controller 'LikesController', ($scope, $http, $location, $cookies)->
   url = $location.absUrl() + "/likes"
 
-  $scope.count = 0
-
-  $scope.get_count = ->
-    $http.get url
-    .success (res)->
-      $scope.count = res.count
-
-  $scope.get_count()
+  $http.get url
+  .success (res)->
+    $scope.count = res.count
   
   $scope.like = $cookies.like
 
+  if $scope.like
+    $http
+      url: $location.absUrl() + "/likes/#{$scope.like}/is_liked"
+      method: 'GET'
+    .success (res)->
+      if  res == 'true'
+        $scope.is_liked = true
+      else
+        $scope.is_liked = false
+  else
+    $scope.is_liked = false
+
   $scope.submit = ->
     $http.post url
     .success (res)->
       if res.success
         $scope.like = $cookies.like = res.id
         $scope.count = res.count
+        $scope.is_liked = true
 
   $scope.cancel = ->
     $http.delete url + "/" + $scope.like
     .success (res)->
       $scope.count = res.count
+    $scope.is_liked = false
     # anyway, clear cookie
     delete $cookies["like"]
     $scope.like = null

app/controllers/likes_controller.rb

@@ -6,6 +6,15 @@ class LikesController < ApplicationController
     render :json=> { success: true, count: post.liked_count }
   end
 
+  def is_liked
+    post = Post.find( params[:blog_id] )
+    if post.likes.where(id: params[:id]).first
+      render text: true
+    else
+      render text: false
+    end
+  end
+
   def create
     post = Post.find( params[:blog_id] )
     like = Like.new

app/views/blogs/_post.html.slim

@@ -13,9 +13,9 @@ p.ptag
   | 发表于:
   span #{format_date(post.created_at)}
 p ng-controller="LikesController"
-  button.like-button ng-show="! like " ng-click="submit()"
+  button.like-button ng-show="! is_liked " ng-click="submit()"
     |{{ count }}
     span Like
-  button.like-button ng-show=" like " ng-click="cancel()" 
+  button.like-button ng-show=" is_liked " ng-click="cancel()" 
     |{{ count }}
     span Liked

config/routes.rb

@@ -6,7 +6,11 @@ WBlog::Application.routes.draw do
       get :rss
     end
     resources :comments, only: [:index, :create]
-    resources :likes, only: [:index, :create, :destroy]
+    resources :likes, only: [:index, :create, :destroy] do
+      member do
+        get :is_liked
+      end
+    end
   end