I am trying to get the Files Urls from selected documents. I am using SPContext to make a call and then using a callback function to push results into an array then later in the code I loop through the array to access the urls so I can download the documents. However, the problem is that it downloads documents double times or triple times, depending on how many I have selected.
My questions are:
- how can I retrieve the urls of the selected documents. Is there a better way than the one I have so far?
- How can I download only a single copy of the document, thus avoiding double download of the same document?
- For my understanding, how can I call executeQueryAsync multiple times and store the response in an array as I have done below? Please let me know how can I improve my code.
I am using Sharepoint 2013. Thank you for your help.
function DownloadFiles(onComplete) {
var selectedItems = SP.ListOperation.Selection.getSelectedItems(ctx);
var count = selectedItems.length;
if (count == 0) {
alert("Please select an item from the list");
return false;
}
var arrOfLinks = [];
for (i in selectedItems) {
var clientContext = new SP.ClientContext();
var targetList = clientContext.get_web().get_lists().getByTitle(ctx.ListTitle);
targetListItem = targetList.getItemById(selectedItems[i].id, 'FileLeafRef', 'ContentType', 'File', 'FileRef');
clientContext.load(targetListItem);
arrOfLinks.push(targetListItem);
clientContext.executeQueryAsync(() => {
onComplete(arrOfLinks);
}, Function.createDelegate(this, this.onQueryFailed));
}
}
function myCall() {
DownloadFiles((arrayOfLinks) => {
for (var i = 0; i < arrayOfLinks.length; i++) {
var url = window.location.origin + arrayOfLinks[i].get_item('FileRef');
window.location.href = `/_layouts/15/download.aspx?SourceUrl=${url}`;
}
});
}
function onQueryFailed(sender, args) {
alert('Request failed. \nError: ' + args.get_message() + '\nStackTrace: ' + args.get_stackTrace());
}
