使用的respond_to方法来呈现js.erb部分

问题描述

我有一个功能，用户喜欢/不象和不喜欢/ undislike菜肴。这就是我最初有我的行为设置：

I have a feature where users like/unlike and dislike/undislike dishes. This is how I initially have my actions setup:

菜控制器

class DishesController < ApplicationController
  def like
    @dish.liked_by current_user
  end

  def dislike
    @dish.disliked_by current_user
  end
  ...
end

考虑到 js.erb 模板，每个模板是完全一致的，我想只创建一个共享的部分，每个可以使用：

Considering the js.erb templates for each template are completely identical I wanted to create just one shared partial that each could use:

原始设置

# like.js.erb, unlike.js.erb,dislike.js.erb,undislike.js.erb

$(".restaurant__dish-vote--<%= @dish.modifier_class %>").html('<%= escape_javascript(render "restaurants/menu_partials/dish_votes", dish: @dish) %>');

新设置

# shared/_vote.js.erb

$(".restaurant__dish-vote--<%= @dish.modifier_class %>").html('<%= escape_javascript(render "restaurants/menu_partials/dish_votes", dish: @dish) %>');

现在我想修改我的控制器，以反映这些变化，但在Ajax功能似乎并不具有以下工作：

Now I'm trying to refactor my controller to reflect these changes but the ajax functionality doesn't seem to work with the following:

class DishesController < ApplicationController
  def like
    respond_to do |format|
      format.js { render partial: "dishes/shared/vote.js.erb" }
    end

    @dish.liked_by current_user
  end
end

的操作完成，但是，从面向用户侧的变化时刷新仅反射。我究竟做错了什么？

The action completes but the changes on the user-facing side are only reflected upon refresh. What am I doing wrong?

推荐答案

我想你应该叫 @ dish.liked_by CURRENT_USER 在渲染部分： 菜/共享/ vote.js.erb。问题是， @dish 尚未更新。

I think you should call @dish.liked_by current_user before render partial: "dishes/shared/vote.js.erb". The problem is that @dish is not updated yet.

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