Ruby-on-rails 没有视图的 Rails 控制器动作
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Rails controller action without a view
提问by Crystian Le?o
I just want to do a rails action without a view.
我只想在没有视图的情况下执行 rails 操作。
In my 'routes.rb'
在我的“routes.rb”中
resources :pictures do
member do
post 'dislike'
end
end
In my 'PictureController.rb'
this does not work
在我的“PictureController.rb”中，
这不起作用
def dislike
@picture = Picture.find(params[:id])
@like = Like.find(:user_id => current_user.id, :picture_id => params[:id])
@like.destroy
respond_to do |format|
format.html { render :action => :show, :id => params[:id], notice: 'You don\'t like this picture anymore.' }
format.json { render json: @picture }
end
end
neither do this
也不这样做
def dislike
@picture = Picture.find(params[:id])
@like = Like.find(:user_id => current_user.id, :picture_id => params[:id])
@like.destroy
respond_to do |format|
format.html { redirect_to @picture, notice: 'You don\'t like this picture anymore.' }
format.json { render json: @picture }
end
end
or even this (but this is not the case for me, i want a feedback to the user via json and via html)
甚至这个（但对我来说不是这种情况，我想通过 json 和 html 向用户提供反馈）
def dislike
@picture = Picture.find(params[:id])
@like = Like.find(:user_id => current_user.id, :picture_id => params[:id])
@like.destroy
render :nothing => true
end
But i keep getting this error message:
但我不断收到此错误消息：
ActionView::MissingTemplate: Missing template pictures/dislike, application/like with {:locale=>[:en], :formats=>[:html], :handlers=>[:erb, :builder, :coffee]}.
How should i tell rails that this action in PicturesController does not needs a view?
我应该如何告诉 rails PicturesController 中的这个操作不需要视图？
Solved!
解决了！
I didn't really solved the problem of telling rails i did not need a view, i just created another controller, put the method in it, and told rails routing to match the dislike action with a matchcall.
I cannot tell for sure, but i think it was a problem with the resources :picturein my routes.rbfile...
我并没有真正解决告诉 rails 我不需要视图的问题，我只是创建了另一个控制器，将方法放入其中，并告诉 rails 路由将不喜欢的操作与match调用相匹配。我不能肯定，但我认为这是resources :picture我的routes.rb文件中的问题...
But anyway, thank you guys! =)
但无论如何，谢谢你们！=)
采纳答案by Crystian Le?o
Just created another controller with the dislike action:
刚刚创建了另一个带有不喜欢动作的控制器：
def dislike
@picture = Picture.find(params[:id])
@like = Like.find(:user_id => current_user.id, :picture_id => params[:id])
@like.destroy
respond_to do |format|
format.html { redirect_to :back, notice: 'You don\'t like this picture anymore.' }
format.json { render json: @picture }
end
end
and modified my routes.rb to match this action:
并修改了我的 routes.rb 以匹配此操作：
match 'pictures/:id/dislike' => "likes#dislike", :via => :post
and my link to dislike now is
我现在不喜欢的链接是
<%= link_to 'Dislike!', {:action => :dislike, :controller => :likes}, :method => :post %>
回答by iouri
Something like this?
像这样的东西？
def dislike
@picture = Picture.find(params[:id]
@like = Like.find(:user_id => current_user.id, :picture_id => params[:id])
@like.destroy
render :nothing => true
end
回答by gregates
Most likely, the problem is that you're hitting this action via an ajax request. So the controller is looking for format.js, but you haven't specified a response for that format in your block. Thus it's falling through to the default.
最有可能的问题是您通过 ajax 请求执行此操作。因此控制器正在寻找format.js，但您尚未在块中指定该格式的响应。因此它陷入了默认状态。
Try
尝试
format.js { render json: @picture }
You may also need to tell the ajax request to expect a json response.
您可能还需要告诉 ajax 请求期待 json 响应。
