Ember Droplet
Heroku: http://ember-droplet.herokuapp.com/
Install via npm: npm install ember-droplet
.
See this comment for installing for Ember CLI.
Ember Droplet allows HTML5 drag and drop functionality in Ember straight out-of-the-box. Its philosophy is that it doesn't impose anything, and instead allows each individual developer to decide how it should work.
Note: For pre-Ember 2.0.0 support use v0.10.0
.
Features
- Upload with HTML5's drag and drop;
- MIME type restrictions on permitted file types;
- Restrictions on the amount of files to be uploaded at any one time;
- Allow immediate uploading when the user selects a file;
- Instant image previews upon dropping;
- Allows the deletion of files before they're uploaded;
- Keeps a track of all files – even invalid files;
- Abort requests after they have been sent to the server;
Methods
The DropletMixin
contains the following actions:
addFiles
– Adds files to the queue;deleteFile
– Deletes a specified file by model;clearFiles
– Clears all valid and invalid files;uploadFiles
– Uploads all valid files;abortUpload
– Abort the current request;mimeTypes
– Specify acceptable MIME types;prepareFiles
– Packages file objects into Droplet models;
In addition to the actions, the mixin also has the following computed properties for convenience:
validFiles
– Provides a list of valid files;invalidFiles
– Provides a list of invalid files;uploadedFiles
– All uploaded files;deletedFiles
– All deleted files;
Getting Started
In order to begin using EmberDroplet, you need to construct an Ember.Component
using the Droplet
mixin:
App.XDropletComponent = Ember.Component.extend(Droplet, {
url: location.origin + '/upload'
});
From there you can then add the component in block form to your application as follows — the reason we use it in block form is that other Droplet
related mixins can be added as children to x-droplet
.;
{{#x-droplet}}{{/x-droplet}}
Options
Note: Specifying a url
parameter is mandatory, since no default is assumed.
To override the default options you can assign the following properties on the options object:
requestMethod
– Changed the request verb from defaultPOST
;maximumSize
– Set the maximum size for each individual file;maximumValidFiles
– Amount of valid files permitted to be in the queue;uploadImmediately
– Upload files as they're added to the queue;includeXFileSize
– Whether to include theX-File-Size
header for progress;useArray
– Changes theFormData
name of thefile
to eitherfile[]
orfile
;mimeTypes
– List of valid MIME types – can also be changed withmimeTypes
method;requestHeaders
– Additional request headers to be sent;requestPostData
– Additional POST data to be sent;
App.XDropletComponent = Ember.Component.extend(Droplet, {
options: {
requestMethod: Droplet.METHOD.PATCH
// ...
}
});
Once you have instantiated the Droplet
Ember.Component
in your application,
you can instantiate other provided Ember.Component
objects for additional functionality:
Hooks
To attach hooks, define them in the hooks object:
App.XDropletComponent = Ember.Component.extend(Droplet, {
hooks: {
didUpload: function() {
console.log("did an upload");
}
}
});
Droppable Area
App.XDropletAreaComponent = Ember.Component.extend(Droplet.Area);
Use as singular or in block form — Droplet.Area
will create a div
with the droppable
class name for you to style accordingly:
{{x-droplet-area}}
Image Preview
App.XDropletPreviewComponent = Ember.Component.extend(Droplet.Preview);
Use as follows where file
is derived from iterating over a computed property:
{{x-droplet-preview image=file}}
Input Field
App.XDropletInputComponent = Ember.Component.extend(Droplet.MultipleInput);
Use in its singular form – can use either Droplet.MultipleInput
or Droplet.SingleInput
:
{{x-droplet-input}}
Example
The example uses the Node.js server to upload files, which is available in example/serer
. Simply run: npm start
— or `foreman start — to create it.
Testing
All of the related tests are written in Jasmine, and can be run with npm run test
. You'll also need to run npm i
to install the project's dependencies.