使用AJAX编辑内容

Question

I try to edit comments in my blog with AJAX. But i get error on my edit method on controller. ActionController::UnknownFormat in CommentsController#edit

def edit
      @post = Post.find(params[:post_id])
      @comment = @post.author.comments.find(params[:id])
      respond_to do |format|
          format.js {render 'edit', status: :created, location: @post}
        end
      end
    end

UPD

I added string:

...
   respond_to do |format|
          format.js {render 'edit', status: :created, location: @post}
          format.html { redirect_to @post, notice: 'You voted' }
                   ^^^this string
...

And and the error is gone. But javascript is not executing and the page just reloads

Answer 1

Please check that you are submitting form as Js request.

in this case, I think Your form is submitting, but it's not sending as a JS request. so your edit action crashes looking for an HTML response.

What you need is to add remote: true to your edit link so that will render and execute the edit.js.erb file. Or if you are making ajax call then add dataType attribute with value 'script' .

For example:

$.ajax({
  dataType: 'script',
  method: 'GET',
  data: { id: id, post_id: post_id },
  url: URL_FOR_EDIT
});