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Ruby on rails undefined method `_delete 'in rails version 2.3.15 works fine with 2.3.5

ruby on rails undefined method `_delete 'in rails version 2.3.15 works fine with 2.3.5

ActionView::TemplateError (undefined method `_delete' for #<Exam:0x709f33664f48>) on line #105 of app/views/exam/_exam_marks_form.erb:
102:         <td class="col-1">
103:           <div class="label-field-pair2">
104:             <div class="text-input-bg2">
105:               <%= exam_form.check_box :_delete %>
106:             </div>
107:           </div>
108:         </td>
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Rails changed this around the 2.3.8 timeframe. Edit: _delete: _destroy and you should be good.



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