javascript - Passing variables to JS from controller Rails 4 -


i want pass variables controller js file. here do:

#index.html.erb      <%= content_tag 'div', id: 'coords', data: { coords: @coords} %>      <% end %>    #@coords defined in maps#index  #@coords = map.all

in browser console call:

$('#coords').data('coords')  # or acces 1st object  $('#coords').data('coords')[0]  # or acces attribute  $('#coords').data('coords')[0].lat   #object {id: 1, vibration_level: 456, lat: "71.45543", lon: "53.43424", time_sent: "1994-05-20t00:00:00.000z"…}
can not same in javascript. undefined on of calls. if inspect code can locate div data-coords: how make @coords accessible in js?

if js file located so: app/assets/javascripts/your-js.js.erb

then can use variables so:

<%= @coords %>

edit:

my previous answer wrong sing js precompiled. new answer : create html app/views/layouts/_page_scope.html.erb

 <%     globalpagescope = {}     globalpagescope['coords'] = @coords if @coords %>  <script type="text/javascript">     document.globalpagescope = <%= raw globalpagescope.to_json %>; </script>

then can access variable js:

globalpagescope.coords


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