See a demo

When running async actions ensuring disabling of the button, re-enabling, and handling promise rejections is pretty boilerplate. This component packages up that behavior.

npm install ember-cli-async-button --save-dev

In a template use the async-button helper

{{async-button action="save" default="Save" pending="Saving..."}}
{{! or if you have arguments to be passed to the action}}
{{async-button model "another argument" ... action="save" default="Save" pending="Saving..."}}

The component can also take a block:

{{#async-button action="save"}}
  Template content.
{{/async-button}}

In the controller for the template, you must create an action that matches the name given in the helper. If you passed the helper arguments, they will follow the callback argument.

Ember.Controller.extend({
  actions: {
    save: function(callback) {
      var promise = this.get('model').save();

      callback(promise);

      promise.then(function() {
        ...
      });
    }
    // If you passed async-button arguments
    save: function(callback, firstArg, secondArg, ...) {
      var promise = this.get('model').save();

      callback(promise);

      promise.then(function() {
        ...
      });
    }
  }
});

Make special note of callback(promise); In order for async-button to work correctly the promise in the action must be passed back to the callback function that is passed in.

The async-button helper has other options to customize the states.

This is the action name used by the button.

The default text used for the button.

Special text used while the promise is running. If not provided will use the default value.

Deprecated! Use fulfilled

Special text used if the promise is resolved. If not provided will use the default value.

Special text used if the promise is fulfilled. If not provided will use the default value.

Special text used if the promise is rejected. If not provided will use the default value.

Flag telling the button to reset to the default state once resolved or rejected. A typical use case is to bind this attribute with ember-data isDirty flag.

A class of async-button is assigned to the button. An additional dynamic class is assigned during one of the four states:

• default
• pending
• fulfilled
• rejected

You can adjust the button's tag by passing the tagName option:

{{async-button tagName="a" action="save" default="Save" pending="Saving..."}}

When you set tagName to a, the element will obtain an empty href attribute. This is necessary to enable the link behavior of the element, i. e. color, underlining and hover effect.

You can of course override href if you need it for some reason:

{{async-button tagName="a" href="custom" action="save" default="Save" pending="Saving..."}}

If you don't want a href attribute on your a button, set it to false:

{{async-button tagName="a" href=false action="save" default="Save" pending="Saving..."}}

• Brian Cardarella

We are very thankful for the many contributors

This library follows Semantic Versioning

Please do! We are always looking to improve this gem. Please see our Contribution Guidelines on how to properly submit issues and pull requests.

DockYard, Inc © 2014

@dockyard

Licensed under the MIT license