How do you use ng-file-upload and ngImgCrop?
Question
I want to create a file uploader that I can upload a picture to my UI, crop it and then send it to my server. I've been using ngFileUpload to upload files and it has worked well. I added ngImgCrop to my project as instructed and imported the html and css from http://jsfiddle.net/danialfarid/xxo3sk41/590/ into my project to figure out how to use it. Everything looks good at first glance but when I select a picture from my hard drive it does not appear in the crop area. Could something be hidden or is something else wrong? Here is the jsfiddle html and css:
<style>
.cropArea {
background: #E4E4E4;
overflow: hidden;
width:500px;
height:350px;
}
</style>
<div>Crop Image and Upload</div>
<button ngf-select ng-model="picFile" accept="image/*">
Select Picture</button>
<div ngf-drop ng-model="picFile" ngf-pattern="image/*"
class="cropArea">
<img-crop image="picFile | ngfDataUrl"
result-image="croppedDataUrl" ng-init="croppedDataUrl=''">
</img-crop>
</div>
<div>
<img ng-src="{{croppedDataUrl}}" />
</div>
<button ng-click="upload(croppedDataUrl, picFile.name)">Submit</button>
I have code that works just for uploading. The picture appears as expected. I wonder why it is for the one and not the other. This code works for ng-file-upload:
<div class="photo-upload-text">Upload your image</div>
<a class="upload-button" ngf-select ng-model="logo" href="#">Choose File </a>
<img ngf-src="logo" ngf-default-src="'/thumb.jpg'" ngf-accept="'image/*'">
Finally, I laid out two examples. This one allows me to crop the picture but it does not produce a base64 file without a prefix that can be easily uploaded. The second one though similar does not put the picture up for cropping.
Allows for cropping but does not produce an acceptable base64 file
<div>Select an image file: <input type="file" id="fileInput" /></div>
<div class="cropArea">
<img-crop image="myImage" result-image="myCroppedImage"></img-crop>
</div>
<div>Cropped Image:</div>
<div>
<img ng-src="{{myCroppedImage}}" />
</div>
I think this provides a good base64 file but I can't crop it to find out
<div>Crop Image and Upload</div>
<button ngf-select ng-model="picFile" accept="image/*">Select Picture</button>
<div ngf-drop ng-model="picFile" ngf-pattern="image/*"class="cropArea">
<img-crop image="picFile | ngfDataUrl" result-image="croppedDataUrl" ng-init="croppedDataUrl=''"></img-crop>
</div>
<div>Cropped Image:</div>
<div>
<img ng-src="{{croppedDataUrl}}" />
</div>
2 answers
solution1
2 ACCPTED 2016-06-17 07:42:16
Everything looks good at first glance but when I select a picture from my hard drive it does not appear in the crop area .
Everything works perfectly when I tried reproducing your issue using your code below.
angular.module('app', ['ngFileUpload', 'ngImgCrop']).controller('UploadController', function($scope) { });
.cropArea { background: #E4E4E4; overflow: hidden; width:500px; height:350px; }
<head> <link href="https://cdnjs.cloudflare.com/ajax/libs/ng-img-crop/0.3.2/ng-img-crop.css" rel="stylesheet"/> </head> <body ng-app="app"> <div>Crop Image and Upload</div> <button ngf-select ng-model="picFile" accept="image/*"> Select Picture</button> <div ngf-drop ng-model="picFile" ngf-pattern="image/*" class="cropArea"> <img-crop image="picFile | ngfDataUrl" result-image="croppedDataUrl" ng-init="croppedDataUrl=''"> </img-crop> </div> <div> <img ng-src="{{croppedDataUrl}}" /> </div> <button ng-click="upload(croppedDataUrl, picFile.name)">Submit</button> <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/danialfarid-angular-file-upload/12.0.4/ng-file-upload.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/ng-img-crop/0.3.2/ng-img-crop.js"></script> </body>
solution2
1 2017-12-14 12:50:26
I tried the example of ngImgCrop and ng-file-upload and it did not work for me as is. I needed to add the following code to make it work:
var app = angular.module('fileUpload', ['ngFileUpload', 'ngImgCrop']);
app.controller('MyCtrl', ['$scope', 'Upload', '$timeout', function ($scope, Upload, $timeout) {
$scope.upload = function (dataUrl, name) {
Upload.upload({
url: 'https://angular-file-upload-cors-srv.appspot.com/upload',
data: {
file: Upload.dataUrltoBlob(dataUrl, name)
},
}).then(function (response) {
$timeout(function () {
$scope.result = response.data;
});
}, function (response) {
if (response.status > 0) $scope.errorMsg = response.status
+ ': ' + response.data;
}, function (evt) {
$scope.progress = parseInt(100.0 * evt.loaded / evt.total);
});
}
}]);
this code:
$scope.myImage='';
$scope.myCroppedImage='';
var handleFileSelect=function(evt) {
var file=evt.currentTarget.files[0];
var reader = new FileReader();
reader.onload = function (evt) {
$scope.$apply(function($scope){
$scope.myImage=evt.target.result;
});
};
reader.readAsDataURL(file);
};
angular.element(document.querySelector('#fileInput')).on('change',handleFileSelect);
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