ruby-on-rails - acts_as_votable 竖起大拇指/向下按钮

Question

我安装了 acts_as_votable gem，它在控制台中正常工作(如文档中所述)。所以我的问题是如何为赞成票和反对票按钮设置表单？或者它们可以只是链接？

这里是文档:github.com/ryanto/acts_as_votable/blob/master/README.markdown

我有一个用户和一个图片模型；用户应该能够喜欢图片。图片 View 中的代码，按钮应位于:

<% for picture in @pictures %> 
<p> 
<%= image_tag picture.image_url(:thumb).to_s %> 
</p> 
<%= picture.created_at.strftime("%a, %d %b. %Y") %>, by 
<%= link_to picture.user.name, picture.user %> 
<h2> <%= link_to picture.name, picture %></h2> 

[buttons here] 

<%= picture.votes.size %> <% end %>

Answer 1

执行此操作的一种方法是为赞成票和反对票添加您自己的 Controller 操作。我假设您的 Controller 中有可用的 current_user 方法。

# pictures_controller.rb
def upvote
  @picture = Picture.find(params[:id])
  @picture.liked_by current_user
  redirect_to @picture
end

def downvote
  @picture = Picture.find(params[:id])
  @picture.downvote_from current_user
  redirect_to @picture
end

# config/routes.rb

resources :pictures do
  member do
    put "like", to: "pictures#upvote"
    put "dislike", to: "pictures#downvote"
  end
end

# some view

<%= link_to "Upvote", like_picture_path(@picture), method: :put %>
<%= link_to "Downvote", dislike_picture_path(@picture), method: :put %>