init project

app/assets/javascripts/admins/modals/admin-edit-department-modal.js

@@ -0,0 +1,34 @@
+$(document).on('turbolinks:load', function() {
+  $('.admin-modal-container').on('show.bs.modal', '.modal.admin-edit-department-modal', function(){
+    var $modal = $('.modal.admin-edit-department-modal');
+    var $form = $modal.find('form.admin-edit-department-form');
+
+    $form.validate({
+      errorElement: 'span',
+      errorClass: 'danger text-danger',
+      rules: {
+        'department[name]': {
+          required: true,
+          maxlength: 20
+        },
+        'department[host_count]': {
+          digits: true
+        }
+      }
+    });
+
+    $modal.on('click', '.submit-btn', function(){
+      $form.find('.error').html('');
+      var url = $form.attr('action');
+
+      if ($form.valid()) {
+        $.ajax({
+          method: 'PATCH',
+          dataType: 'script',
+          url: url,
+          data: $form.serialize()
+        });
+      }
+    });
+  })
+});