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  1. <label>Designations</label>
  2. <%= f.association :designation, input_html: { id: 'designation_select'},label_html: { class: 'form-control-plaintext' } %>
  3.  
  4. <label>Benefits</label>
  5.           <%= f.collection_select :benefit_ids, Benefit.all,:id, :name, {}, { id: 'benefit_select',multiple: 'multiple', :class => 'form-control multiselect-all',:include_blank => "Select Benefit" } %>
  6.      
  7. <script type="text/javascript">
  8.   document.addEventListener("turbolinks:load", function() {
  9.  
  10.     $('#designation_select').change(function() {
  11.       debugger
  12.       id = $('#designation_select')[0].value;
  13.       $.ajax({
  14.           type: 'GET',
  15.           dataType: 'json',
  16.           data: {designation_id: id},
  17.           url: '/benefits/benefit_by_designation',
  18.           success: function(result) {
  19.             debugger
  20.             var el, length, options, parser, results, x;
  21.             $('#benefit_select').empty();
  22.             $('#benefit_select').prepend('<option value=''> Select Benefit </option>');
  23.             parser = new DOMParser;
  24.             el = parser.parseFromString(result, 'text/html');
  25.             options = el.getElementsByTagName('option');
  26.             length = options.length;
  27.             x = 0;
  28.             results = [];
  29.             while (x < length) {
  30.               $('#designation_select')[0].appendChild(options[0]);
  31.               results.push(x++);
  32.             }
  33.             return results;
  34.           }
  35.         });
  36.     });
  37. });
  38. </script>
  39.      
  40. def benefit_by_designation
  41.     benefits = Benefit.where('designation_id = ?', params[:designation_id])
  42.     render html: view_context.options_from_collection_for_select(benefits, :id, :name, {include_blank: 'Select Benefit'})
  43.   end
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