FEATURE: Anonymize User. A way to remove a user but keep their topics and posts.

app/assets/javascripts/admin/models/admin_user.js

@@ -328,6 +328,48 @@ Discourse.AdminUser = Discourse.User.extend({
     });
   },
 
+  anonymizeForbidden: Em.computed.not("can_be_anonymized"),
+
+  anonymize: function() {
+    var user = this;
+
+    var performAnonymize = function() {
+      Discourse.ajax("/admin/users/" + user.get('id') + '/anonymize.json', {type: 'PUT'}).then(function(data) {
+        if (data.success) {
+          bootbox.alert(I18n.t("admin.user.anonymize_successful"));
+          if (data.username) {
+            document.location = "/admin/users/" + data.username;
+          } else {
+            document.location = "/admin/users/list/active";
+          }
+        } else {
+          bootbox.alert(I18n.t("admin.user.anonymize_failed"));
+          if (data.user) {
+            user.setProperties(data.user);
+          }
+        }
+      }, function() {
+        bootbox.alert(I18n.t("admin.user.anonymize_failed"));
+      });
+    };
+
+    var message = I18n.t("admin.user.anonymize_confirm");
+
+    var buttons = [{
+      "label": I18n.t("composer.cancel"),
+      "class": "cancel",
+      "link":  true
+    }, {
+      "label": '<i class="fa fa-exclamation-triangle"></i>' + I18n.t('admin.user.anonymize_yes'),
+      "class": "btn btn-danger",
+      "callback": function(){
+        performAnonymize();
+      }
+    }];
+
+    bootbox.dialog(message, buttons, {"classes": "delete-user-modal"});
+  },
+
   deleteForbidden: Em.computed.not("canBeDeleted"),
 
   deleteExplanation: function() {

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

@@ -450,6 +450,11 @@
 
 <section>
   <hr/>
+  <button {{bind-attr class=":btn :btn-danger :pull-right anonymizeForbidden:hidden"}} {{action "anonymize" target="content"}} {{bind-attr disabled="anonymizeForbidden"}}>
+    <i class="fa fa-exclamation-triangle"></i>
+    {{i18n 'admin.user.anonymize'}}
+  </button>
+
   <button {{bind-attr class=":btn :btn-danger :pull-right deleteForbidden:hidden"}} {{action "destroy" target="content"}} {{bind-attr disabled="deleteForbidden"}}>
     <i class="fa fa-exclamation-triangle"></i>
     {{i18n 'admin.user.delete'}}