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93 lines
2.6 KiB
Markdown
93 lines
2.6 KiB
Markdown
angular-base64-upload
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=====================
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Angular directive for uploading base64-encoded files that you can pass along with the resource model. This directive is based from one of the answers in this [SO question](http://stackoverflow.com/questions/20521366/rails-4-angularjs-paperclip-how-to-upload-file).
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<b>Note:</b> This directive only supports single file selection.
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Installation
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-------------
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<b>Bower:</b> `bower install angular-base64-upload`
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Example
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--------------------------
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See the README.md on [demo folder](https://github.com/adonespitogo/angular-base64-upload/tree/master/demo).
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Usage
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-------
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Include `angular.js` and `angular-base64-upload.js` in your application and add `naif.base64` as dependency to your main module:
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```
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angular.module('myApp', ['naif.base64']);
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```
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HTML: <br>
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```html
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<form>
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<input type='file' ng-model='yourModel' base-sixty-four-input>
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</form>
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```
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Sample `yourModel` value after selecting a file:
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```json
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{
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"filesize": 54836 (bytes),
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"filetype": "image/jpeg",
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"filename": "profile.jpg",
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"base64": "/9j/4AAQSkZJRgABAgAAAQABAAD//gAEKgD/4gIcSUNDX1BST0ZJTEUAAQEAAAIMbGNtcwIQA..."
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}
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```
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You can use the `base-sixty-four-image` directive to display image preview:
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<img base-sixty-four-image="yourModel">
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If you also want to display a placeholder image, you can additionally use `base-sixty-four-image-placeholder` directive:
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<img base-sixty-four-image="yourModel" base-sixty-four-image-placeholder="placeholder.png">
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Server-Side
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---------------
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You will have to decode the base64 file in your backend on your own.
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Sample PHP code for decoding base64 file in
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[demo folder](https://github.com/adonespitogo/angular-base64-upload/tree/master/demo).
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Start it by cd-ing to this directory and running:
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php -S 0.0.0.0:8000
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Then point your browser to [http://localhost:8000]().
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Below is a ruby code for decoding the base64-encoded file to be passed to paperclip:
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```ruby
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def create
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@resource.attachment = decode_base64
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# save resource and render response ...
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end
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def decode_base64
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# decode base64 string
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Rails.logger.info 'decoding base64 file'
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decoded_data = Base64.decode64(params[:your_model][:base64])
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# create 'file' understandable by Paperclip
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data = StringIO.new(decoded_data)
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data.class_eval do
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attr_accessor :content_type, :original_filename
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end
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# set file properties
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data.content_type = params[:your_model][:filetype]
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data.original_filename = params[:your_model][:filename]
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# return data to be used as the attachment file (paperclip)
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data
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end
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```
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## License
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Released under the terms of MIT License.
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