<a href="{{ back }}" class="btn btn-default" title="Back">Back</a>
</form>
</div>
+
+<script>
+ function verifyFile(filename, objid, failtext) {
+ var reader = new FileReader();
+ reader.readAsDataURL(filename); // read the local file
+
+ reader.onloadend = function(e){
+ var contents = e.target.result;
+ if (!contents) {
+ window.alert(failtext)
+ document.getElementById(objid).value = null;
+ }
+ }
+ }
+
+ $(function() {
+ $("#file").on("change", function()
+ {
+ var files = !!this.files ? this.files : [];
+ if (!files.length || !window.FileReader) return; // no file selected, or no FileReader support
+
+ verifyFile(files[0], 'file', 'Metadata file is unreadable');
+ });
+ });
+
+ $(function() {
+ $("#image").on("change", function()
+ {
+ var files = !!this.files ? this.files : [];
+ if (!files.length || !window.FileReader) return; // no file selected, or no FileReader support
+
+ verifyFile(files[0], 'image', 'Image file is unreadable');
+ });
+ });
+</script>
{% endblock %}