简单的喜欢/不象按钮轨道3,jQuery和AJAX [英] Simple like/unlike button with rails 3, jquery, and ajax
问题描述
我有一个产品,用户,和类似的模式。用户可以喜欢的产品。我想实现一个简单的像按钮,,在一点击,允许用户喜欢的产品。然后等按钮变换成一个不同于按钮,允许用户向产品不同。 pretty的简单。
I have a product, user, and like model. A user can like a product. I am trying to implement a simple like button which, upon a click, allows a user to like a product. Then the like button transforms into an unlike button, allowing the user to unlike a product. Pretty straightforward.
我已经实现了上述模型/控制器逻辑。我不是很好的JavaScript / AJAX,想知道什么是最好的办法是实现上述功能。我想类似/不同的行为由AJAX来处理。我使用的轨道3和jQuery UJS对我的应用程序。
I have implemented the model/controller logic for the above. I am not very good with javascript/ajax and was wondering what the best way would be to implement the above functionality. I want the like/unlike actions to be handled via ajax. I am using rails 3 and jquery ujs for my app.
感谢。
推荐答案
我的回答你的问题很长,所以我写了一个示例应用程序。这里有一个片段:
My answer to your question is long, so I wrote up an example application. Here's a snippet:
有很多方法对皮肤这只猫,但我喜欢渲染的部分和一个UJS模板。
There are many ways to skin this cat, but I like to render a partial and a single ujs template.
_like_button.html.erb
:
<% if like = current_user.likes.find_by_product_id(@product.id) %>
<%= form_for like, :html => { :method => :delete },
:remote => true do |f| %>
<%= f.submit "Unlike" %>
<% end %>
<% else %>
<%= form_for current_user.likes.build(:product_id => @product.id), :remote => true do |f| %>
<%= f.hidden_field :product_id %>
<%= f.hidden_field :user_id %>
<%= f.submit "Like" %>
<% end %>
<% end %>
toggle.js.erb
,其中#像
是DIV封闭的形式:
toggle.js.erb
, where "#like"
is the div enclosing the form:
$("#like").html("<%= escape_javascript render('like_button') %>");
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