gmaps4rails callback not firing

问题

    = gmaps(markers: { data: @json, options: @marker_options }, map_options: @map_options )

    - content_for :map_scripts do
      :javascript
        Gmaps.map.callback = function() {
          alert('asdf') // <-- I never see this alert
        }

Using the gmaps4rails gem (v1.5.2), I placed the code above in my view. My map appears fine with my markers. But with my javascript, shouldn't I get an alert (I'm not)? I'm not sure if I understand the callback completely.

FYI, the javascript appears fine in my source.

回答1:

It should be content_for :scripts as mentioned in the doc

Plus depending on your browser, you'd better have: alert('asdf'); instead of alert('asdf')

来源：https://stackoverflow.com/questions/14144350/gmaps4rails-callback-not-firing