FEATURE: Change user groups in bulk via admin

app/assets/javascripts/admin/controllers/admin-groups-bulk.js.es6

@@ -0,0 +1,34 @@
+import computed from 'ember-addons/ember-computed-decorators';
+import { popupAjaxError } from 'discourse/lib/ajax-error';
+
+export default Ember.Controller.extend({
+  users: null,
+  groupId: null,
+  saving: false,
+
+  @computed('saving', 'users', 'groupId')
+  buttonDisabled(saving, users, groupId) {
+    return saving || !groupId || !users || !users.length;
+  },
+
+  actions: {
+    addToGroup() {
+      if (this.get('saving')) { return; }
+
+      const users = this.get('users').split("\n")
+                                      .uniq()
+                                      .reject(x => x.length === 0);
+
+      this.set('saving', true);
+      Discourse.ajax('/admin/groups/bulk', {
+        data: { users, group_id: this.get('groupId') },
+        method: 'PUT'
+      }).then(() => {
+        this.transitionToRoute('adminGroups.bulkComplete');
+      }).catch(popupAjaxError).finally(() => {
+        this.set('saving', false);
+      });
+
+    }
+  }
+});

app/assets/javascripts/admin/routes/admin-groups-bulk.js.es6

@@ -0,0 +1,13 @@
+import Group from 'discourse/models/group';
+
+export default Ember.Route.extend({
+  model() {
+    return Group.findAll().then(groups => {
+      return groups.filter(g => !g.get('automatic'));
+    });
+  },
+
+  setupController(controller, groups) {
+    controller.setProperties({ groups, groupId: null, users: null });
+  }
+});

app/assets/javascripts/admin/routes/admin-route-map.js.es6

@@ -49,6 +49,8 @@ export default {
     });
 
     this.resource('adminGroups', { path: '/groups' }, function() {
+      this.route('bulk');
+      this.route('bulkComplete', { path: 'bulk-complete' });
       this.resource('adminGroupsType', { path: '/:type' }, function() {
         this.resource('adminGroup', { path: '/:name' });
       });

app/assets/javascripts/admin/templates/groups-bulk-complete.hbs

@@ -0,0 +1 @@
+<p>{{i18n "admin.groups.bulk_complete"}}</p>

app/assets/javascripts/admin/templates/groups-bulk.hbs

@@ -0,0 +1,19 @@
+<div class='groups-bulk'>
+  <p>{{i18n "admin.groups.bulk_paste"}}</p>
+
+  <div class='control'>
+    {{textarea value=users class="paste-users"}}
+  </div>
+
+  <div class='control'>
+    {{combo-box content=groups valueAttribute="id" value=groupId none="admin.groups.bulk_select"}}
+  </div>
+
+  <div class='control'>
+    {{d-button disabled=buttonDisabled
+               class="btn-primary"
+               action="addToGroup"
+               icon="plus"
+               label="admin.groups.bulk"}}
+  </div>
+</div>

app/assets/javascripts/admin/templates/groups.hbs

@@ -1,6 +1,7 @@
 {{#admin-nav}}
   {{nav-item route='adminGroupsType' routeParam='custom' label='admin.groups.custom'}}
   {{nav-item route='adminGroupsType' routeParam='automatic' label='admin.groups.automatic'}}
+  {{nav-item route='adminGroups.bulk' label='admin.groups.bulk'}}
 {{/admin-nav}}
 
 <div class="admin-container">