Description
JavaScript action to process/validate file prior to upload.
Usage
gform.addAction( 'gpfup_before_upload', my_custom_function );Parameters
formId int
The current form ID
fieldId int
The current uploader field ID
file MOxieFile
The file being uploaded. MOxieFile extends File/Blob.
-
The current Plupload instance for the uploader.
gpfupInstance GPFUPField
The current File Upload Pro class instance.
Examples
Limit duration of MP4/MOV files to 10 seconds
<script>
// Limit duration of MP4s and MOV files to 10 seconds
window.gform.addAction('gpfup_before_upload', (formId, fieldId, file, up, gpfupInstance) => {
var maxDurationInSeconds = 10;
const videoMimeTypes = ['video/mp4', 'video/quicktime'];
if (videoMimeTypes.indexOf(file.type) !== -1) {
var fileURL = URL.createObjectURL(file.getNative());
var vid = document.createElement('video');
vid.src = fileURL;
// wait for duration to change from NaN to the actual duration
vid.ondurationchange = function () {
if (this.duration > maxDurationInSeconds) {
gpfupInstance.handleFileError(up, file, {
code: 'does_not_meet_max_duration',
message: 'Video duration cannot exceed ' + maxDurationInSeconds + ' seconds.',
});
}
};
}
});
</script>Since
This filter is available since Gravity Forms File Upload Pro 1.1.1.
