Monday, December 19, 2016

Cordova Upload PDF File

Recently in my project I created Hybrid application using Cordova. There was a requirement where we allow user to choose PDF file or any type of file and upload it to server.

So here are two parts, first let user choose file from SD card or phone memory or from iCloud drive on iOS.

Second part is to upload file to server with progress and store it and get it's path back in case if you want to show it some where. I will show example code on server side.

So lets first check the first part. For this we need following plugins. Please install it first.

https://github.com/jcesarmobile/FilePicker-Phonegap-iOS-Plugin This is specifically for iOS
https://github.com/don/cordova-filechooser This is specifically for Android
https://github.com/apache/cordova-plugin-file
https://github.com/apache/cordova-plugin-file-transfer

The file picker iOS plugin which I have mentioned here will not work for local photos and videos stored in camera roll. For this you have to make certain changes in the plugin. I have mentioned this in my previous blog. Please read it here.

http://davehiren.blogspot.com/2016/12/filepicker-cordova-ios-plugin-get-files.html

Now first lets invoke the plugin.

Android Example

fileChooser.open(function(obj) {
        var filePath = obj.path;
});

iOS Example

FilePicker.pickFile(function(obj) {
        obj = obj[0];
         var filePath = obj.path;
});

In both of this case we will get absolute path of files like

/path/of/file/filename.extension

Now we will have our logic to upload file to server using Cordova File Transfer plugin.

First of all we will get extension of file and keep it separate also we will have file name extracted from the path to send it to server.

var fileType = filePath.substring(obj.path.lastIndexOf('.'));

var options = new FileUploadOptions();
options.fileKey = "file";
options.fileName = filePath.substr(this.evidencePath.lastIndexOf('/') + 1);
options.mimeType = "text/plain";

var params = {};
params.fileType = type;
options.params = params;

var ft = new FileTransfer();

ft.onprogress = function(progressEvent) {
if (progressEvent.lengthComputable) {
//in case you want to show progress bar , your code goes here.
} else {
//loadingStatus.increment();
}
};

var win = function (r) {
        //success alert or your logic after successful upload
};

var fail = function (error) {
        //failure alert or your logic after successful upload
};

ft.upload(fileURI, encodeURI("http://pathtoyourserver"), win, fail, options);

So this was on JavaScript side. Now lets see on server side. I used PHP on server side so I will give you example of that. If you are using something else on server side, please implement your own logic.

$file_type = $_POST['fileType'];
$fileName = time()."_".$file_type;
move_uploaded_file($_FILES["file"]["tmp_name"], "/your/server/path/".$fileName);
return json_encode(array('success'=>true, 'server_path'=>'http://yourserverpath.com'.$fileName));

With this logic you can upload any type of file from your cordova app.

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