I want to have a button on my page from where I can upload an image from local system and then I want to save that image in my local storage.
I am keen to learn angularjs here.
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2 Answers
You'd want to encode the image as a base 64 string and store that in local storage.
See this answer for an example of how to convert the image to a base 64 string. toDataURL() returns a string, which you can then store the same way you would normally store a string in a JSON object.
To display the image, you use something like this:
<img src="data:image/jpeg;base64,blahblahblah"></img>
where blahblahblah is the string returned.
6 Comments
Aditya Sethi
First of all thanks. But by doing it would I be able to store this image in an json object? Basically how do I read the content of image?
Matthew Daly
@AdityaSethi Have expanded upon my answer to cover that
Tech Kid
@MatthewDaly, Bro can you please help me if i send this json string to server via http request can i decode this string code again into jpg, png,etc extension too ?? help me out
Matthew Daly
@Tech Kid You can decode it on the server, but the actual method to do so will obviously depend on the language. If you Google something like "$LANGUAGE_NAME decode base64" you should find something.
Imdad Ali
@AdityaSethi i have the similar requirements, and i m new to Angular Js. can you please give some sample code, i dont want to create any server, just let user to upload image and i want to save that image locally or if possible to use that further.
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Follow below code for upload and save image using AngularJS
Create index.php file and initialize app and create AngularJS controller.
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.10/angular-route.min.js"></script>
<script src="app.js"></script>
</head>
<body ng-app="myApp" ng-controller="myCtrl">
<div>
<input type="file" file-model="myFile"/>
<button ng-click="uploadFile()">upload me</button>
</div>
</body>
</html>
After this, Create app.js and write code to upload image using AngularJS.
var myApp = angular.module('myApp', []);
myApp.directive('fileModel', ['$parse', function ($parse) {
return {
restrict: 'A',
link: function(scope, element, attrs) {
var model = $parse(attrs.fileModel);
var modelSetter = model.assign;
element.bind('change', function(){
scope.$apply(function(){
modelSetter(scope, element[0].files[0]);
});
});
}
};
}]);
myApp.service('fileUpload', ['$http', function ($http) {
this.uploadFileToUrl = function(file, uploadUrl){
var fd = new FormData();
fd.append('file', file);
$http.post(uploadUrl, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
}
}]);
myApp.controller('myCtrl', ['$scope', 'fileUpload', function($scope, fileUpload){
$scope.uploadFile = function(){
var file = $scope.myFile;
console.log('file is ' + JSON.stringify(file));
var uploadUrl = "post.php";
fileUpload.uploadFileToUrl(file, uploadUrl);
};
}]);
After this, Create post.php file to upload file into storage.
<?php $upload_dir = "images/";
if(isset($_FILES["file"]["type"]))
{
$validextensions = array("jpeg", "jpg", "png", "gif");
$temporary = explode(".", $_FILES["file"]["name"]);
$file_extension = end($temporary);
if ((($_FILES["file"]["type"] == "image/png") || ($_FILES["file"]["type"] == "image/jpg") || ($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg")) && in_array($file_extension, $validextensions)) {
if ($_FILES["file"]["error"] > 0){
echo "Return Code: " . $_FILES["file"]["error"] . "<br/><br/>";
} else {
if (file_exists($upload_dir.$_FILES["file"]["name"])) {
echo 'File already exist';
} else {
$sourcePath = $_FILES['file']['tmp_name']; // Storing source path of the file in a variable
$filename = rand().$_FILES['file']['name'];
$targetPath = $upload_dir.$filename; // Target path where file is to be stored
move_uploaded_file($sourcePath,$targetPath) ; // Moving Uploaded file
echo 'success';
}
}
}
} ?>
Create images folder. Hope this will help you. For reference: http://jsfiddle.net/JeJenny/ZG9re/
