AngularJS directive to warn user of unsaved changes when navigating away from a form.
npm install angular-unsavedchanges_Dev Note: This module is still in development. However it's used in many of my production projects so it can be considered stable and battle tested._
This directive will alert users when they navigate away from a page where a form has unsaved changes. It will be triggered in all situations where form data would be lost:
- when user clicks a link
- when user navigates with forward / back button
- when user swipes (iOS)
- when user refreshes the page
In addition this module:
- Works with multiple forms on the same page
- Provides a button to disregard unsaved changes
- Works with Angular Translate module
- Has configurable reload and navigate messages
- Works with uiRouter by default by listeneing for $locationChangeStart and $stateChangeStart
- Can be configured to listen for any event
The directive binds to locationChangeStart and window.onbeforeunload. When these events happen all registered froms are checked if they are dirty. The module defers to the forms $dirty property as a single source of truth. If dirty, the user is alerted. Disregarding changes resets the form and sets pristine.
- Install from bower using $ bower install angular-unsavedChanges --save.
- Include the JS, for example .
- Include in your app, for example: angular.module('app', ['unsavedChanges', 'anotherDirective'])
- Add attribute to your form, unsaved-warning-form
- That's it!
#### unsaved-warning-form
Add to forms you want to register with directive. The module will only listen when forms are registered.
``
Optionally, you can add to an element within a form:
`
When used in this way, it must be no more then 3 levels nested within parent form.
#### unsaved-warning-clear
Add to button or link that will disregard changes, preventing the messaging when user tries to navigate. Note that button type should be reset.
`
#### resettable
Add to inputs that use ng-model to reset model values when user dismisses changes or clicks the unsaved-warning-clear button.
`
Note that if you have multiple forms on the page, only the model values inside the form which was reset will be effected.
On page change or reload, all model values will be effected.
pattern. This avoids the need for custom getters and setters and allows us to treat configuration as pure JS objects. #### useTranslateService
Defaults to
true. Will use translate service if available. It's safe to leave this set to true, even when not using the translate service, because the module still checks that the service exists. `
unsavedWarningsConfigProvider.useTranslateService = true;
#### logEnabled
Defaults to
. Uses the services internal logging method for debugging. `
unsavedWarningsConfigProvider.logEnabled = true;
#### routeEvent
Defaults to
which supports ui router by default.`
unsavedWarningsConfigProvider.routeEvent = '$stateChangeStart';
#### navigateMessage
Set custom message displayed when user navigates. If using translate this will be the key to translate.
unsavedWarningsConfigProvider.navigateMessage = "Custom Navigate Message";
#### reloadMessage
Set custom message displayed when user refreshes the page. If using translate this will be the key to translate.
unsavedWarningsConfigProvider.reloadMessage = "Custom Reload Message";
Gotchas / Known Bugs
* Known issue: sometimes the form is removed from expected scope. Ie: in your controller
no longer works. You might need to access $scope.$$childTail.formName. This will be fixed in furture versions.
Demo / Dev
To try the demo run
npm install && bower install && grunt connect. The browser should open http://127.0.0.1:9001/demo.
Test
Note you need to manually change the paths in
index.html and karam-unit.conf to point to the dist version for final testing. Make sure to run $ grunt first. __End 2 End Testing__
Because of the alert / event driven nature of this module it made the most sense to rely on e2e tests. (also its hard to interact with alerts via unit tests).
To run the e2e tests do the following:
- Install Protractor as per directions here: https://github.com/angular/protractor
- Start selenium server:
webdriver-manager start (or use other selenium methods as per Protractor documentation.)
- Run $ grunt test:e2e
__Unit Tests__
- Run
OR $ grunt test
Build
Run
The MIT License (MIT)
Copyright (c) 2013-2014 Matt Miller
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