我正在制作一个网站, 里面有一堆照片, 每张照片下都有一张Uppote的按钮。 我希望该按钮能够提交 PUT 请求, 更新数据库中的字段 。 目前我有一个代码 :
<% @users.each do |user| %>
<%= image_tag user.avatar.url(:thumb) %>
<% form_for (@user) do |f| %>
<input name="commit" type="submit" value="Upvote">
<% end %>
<% end %>
我希望当用户点击上调的按钮时,它会调用 PUT 请求, 更新值, 而不是重定向到同一页。 我无法找到如何做到这一点 。
首先,您的代码错误: 将 form_for( @ user) 替换为 for_for( user)
其次,由于 user 对象已经存在, 它默认为 PUT 。 所以您不需要做任何工作 。
如果您想要上传一个用户( 不是图片? ), 然后将此放入您的 user_ controller. rb 文件 :
def upvote
@user = User.find(params[:user])
@user.upvote
end
在您的应用程序/ 模型/ 用户. rb 中
def upvote
self.votes += 1
self.save
end
在您的配置/ 路由. rb 中
resources :user do
put :upvote
end
没有测试,但应该给你一个起点。
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