How to check if file input is empty in angular?

Question

Like in the title, how I can check if the file input is empty? And bind the result to $scope.

Possible duplicate of [Check if a input box is empty](http://stackoverflow.com/questions/16691778/check-if-a-input-box-is-empty) — Takarii, May 18 '16 at 08:54

score -4 · Accepted Answer · answered May 18 '16 at 09:03

Natively you can't, because file uploading are more complex than that.

In order to trigger and upload of a file you have to use a multipart request which is different from a simple AJAX JSON request.

Of course since angularJS is a very popular framework you have a plugin for this : https://github.com/danialfarid/ng-file-upload. You will find every thing you need :

How to upload a file
How to restrict a file (content type, weight, ...).
It even show some use case about how handling that on server side for Spring/Rails/NodeJS/PHP,...

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