HTML with script function in library not working in another project - google-apps-script

I am trying to implement a workflow - I need to send an email with links to approve/reject a candidate to Level 1 Manager and then to Level 2 Manager. Once both approve, a confirmation email is sent to the candidate.
I have a custom function say main_function() that executes before sending each of the two emails. This function needs to pull data from the spreadsheet to which the script is bound.
Since I have a two-step approval, I created different projects to get separate WebApp URLs for each approval step.
I am including the main_function() function as a library in the two projects.
main_function() sends an email with approve/reject link and when the link is clicked an HTML opens with an input box to take comments.
Then the HTML includes a call to a script function saveToSheets() to save the data to google sheet.
The HTML shows up but data is not getting saved because saveToSheets() is not called. How can I resolve this?
Main function in Library myLib
main_function(){
//do something
Logger.log("function called!");
var htmlTemplate = HtmlService.createTemplateFromFile('Index2.html');
htmlTemplate.ID = ID; //pass variables from script to HTML
htmlTemplate.decision = decision;
htmlTemplate= htmlTemplate.evaluate().setTitle('Comments').setSandboxMode(HtmlService.SandboxMode.NATIVE);
return htmlTemplate.asTemplate();
}
saveToSheets(inputArray){
//do something
}
Index2.html in Library myLib
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<style>
</style>
</head>
<body>
// Includes a COMMENT BOX with id comment1
//include DIV element with id output to catch error
<script>
function runGoogleScript() {
var item0 = "<?= ID ?>";
var item1 = "<?= decision ?>";
var item2 = document.getElementById('comment1').value; //comments
var inputArray =[item0,item1,item2];
google.script.run.withFailureHandler(onFailure).myLib.saveToSheets(inputArray);
}
function onFailure(error) {
var div = document.getElementById('output');
div.innerHTML = "ERROR: " + error.message;
}
function onSuccess() {
}
</script>
</body>
</html>
Function in another project that needs to reuse the script and HTML through mylib
myfunction(){
var htmlTemplate = mylib.main_function();
return htmlTemplate.evaluate();
}

It is incorrect to say "Index.html is not accessible from project". When you deploy a project as a library, its HTML files are in the context of the library.
But if you want to pass an evaluated HTML template from a library as a template you should use asTemplate()
Example:
main_function(){
//do something
Logger.log("function called!");
var htmlTemplate = HtmlService.createTemplateFromFile('Index.html');
htmlTemplate= htmlTemplate.evaluate();
return htmlTemplate.asTemplate();
}

Related

How to handle errors and success at the same time on a Google Apps Script Webapp

I am wondering how the client-server communication with Google Apps Script Webapps works. In the html page I call my functions with
google.script.run.doSomething();
and I can add a
withFailureHandler(onFailure);
OR
withSuccessHandler(onSuccess) but I can't add both..
So when I want to call a server-side function I normally want to handle the response in the UI ?differently if it is a success than a failure, right? But I want to handle both right? So why do I have to choose between one of them?
Also another problem is that I could not find any information about the actual errors you can have on the server side so that your withFailureHandler(onFailure); can handle them. Can I just do a throw new Error("everything is broken - tell that the user")? If there are permission errors, are they handled? How do I generate an error on the server side so that I can handle it on the client side properly?
It is true that the documentation does not specify it clearly, but you can implement both a success and error handler simultaneously
Sample:
<html>
<head>
<base target="_top">
<script>
google.script.run.withSuccessHandler(onSuccess).withFailureHandler(onFailure).getUnreadEmails();
function onSuccess(numUnread) {
var div = document.getElementById('output');
div.innerHTML = 'You have ' + numUnread + ' unread messages in your Gmail inbox.';
}
function onFailure(error) {
var div = document.getElementById('output');
div.innerHTML = "ERROR: " + error.message;
}
</script>
</head>
<body>
<div id="output"></div>
</body>
</html>
UPDATE
To simulate a failure based on the documentaiton sample, change the working code.gs part
from
function doGet() {
return HtmlService.createHtmlOutputFromFile('Index');
}
function getUnreadEmails() {
return GmailApp.gotInboxUnreadCount();
}
to
function doGet() {
return HtmlService.createHtmlOutputFromFile('Index');
}
function getUnreadEmails() {
return GMailApp.gotInboxUnreadCount();
}
After deploying the WebApp, the html will output:
As written in the official documentation,
You can use any combination and any order of withSuccessHandler(), withFailureHandler(), and withUserObject(). You can also call any of the modifying functions on a script runner that already has a value set. The new value simply overrides the previous value.
Sample:
const gsr = google.script.run;
const runnerF = gsr.withFailureHandler(onFailure);
const runnerS1 = runnerF.withSuccessHandler(onSuccess1);
const runnerS2 = runnerF.withSuccessHandler(onSuccess2);
/*Both runners have the same failure handlers, but different success handlers*/
runnerS1.callServer();//failure => onFailure;success => onSuccess;
runnerS2.callServer2();//failure => onFailure;success => onSuccess2;

How to pass file upload blob from HTML form to server-side Apps Script?

The Google support article example under the Forms heading is broken. From the article:
If you call a server function with a form element as a parameter, the form becomes a single object with field names as keys and field values as values. The values are all converted to strings, except for the contents of file-input fields, which become Blob objects.
I tested this by passing a Form element containing 5 text inputs and a file, then logging Object.keys() on the form object. It returned only the 5 text fields, the file was stripped from the form object. Attempting to assign the file blob directly returned Exception: Invalid argument: blob
How do I pass the file blob from the client-side Form to the server-side Apps Script?
EDIT: To clarify, I also copy-pasted the example provided by Google verbatim. It errors with Exception: Invalid argument: blob.
To reproduce:
Create new Google Apps Script project
Index.html contents:
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<script>
// Prevent forms from submitting.
function preventFormSubmit() {
var forms = document.querySelectorAll('form');
for (var i = 0; i < forms.length; i++) {
forms[i].addEventListener('submit', function(event) {
event.preventDefault();
});
}
}
window.addEventListener('load', preventFormSubmit);
function handleFormSubmit(formObject) {
google.script.run.withSuccessHandler(updateUrl).processForm(formObject);
}
function updateUrl(url) {
var div = document.getElementById('output');
div.innerHTML = 'Got it!';
}
</script>
</head>
<body>
<form id="myForm" onsubmit="handleFormSubmit(this)">
<input name="myFile" type="file" />
<input type="submit" value="Submit" />
</form>
<div id="output"></div>
</body>
</html>
Code.gs contents:
function doGet() {
return HtmlService.createHtmlOutputFromFile('Index');
}
function processForm(formObject) {
var formBlob = formObject.myFile;
var driveFile = DriveApp.createFile(formBlob);
return driveFile.getUrl();
}
Publish as Web App
Submit the form with any file
Observe error in View -> Stackdriver Logging -> Apps Script Dashboard
Here's an example:
html:
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<script>
function fileUploadJs(frmData) {
document.getElementById('status').style.display ='inline';
google.script.run
.withSuccessHandler(updateOutput)
.uploadTheFile(frmData)
}
function updateOutput(info) {
var br='<br />';
var outputDiv = document.getElementById('status');
outputDiv.innerHTML = br + 'File Upload Successful.' + br + 'File Name: ' + info.name + br + 'Content Type: ' + info.type + br + 'Folder Name: ' + info.folder;
}
console.log('My Code');
</script>
<style>
body {background-color:#ffffff;}
input{padding:2px;margin:2px;}
</style>
</head>
<body>
<h1 id="main-heading">Walking Tracks</h1>
<h3>Upload GPS Tracks Files</h3>
<div id="formDiv">
<form id="myForm">
<input name="fileToLoad" type="file" /><br/>
<input type="button" value="Submit" onclick="fileUploadJs(this.parentNode)" />
</form>
</div>
<div id="status" style="display: none">
<!-- div will be filled with innerHTML after form submission. -->
Uploading. Please wait...
</div>
<div id="controls">
<input type="button" value="Close" onClick="google.script.host.close();" />
</div>
</body>
</html>
server code:
function uploadTheFile(theForm) {
var fileBlob=theForm.fileToLoad;
var fldr = DriveApp.getFolderById('FolderId');
var file=fldr.createFile(fileBlob);
var fi=formatFileName(file);
var fileInfo={'name':fi.getName(),'type':fileBlob.getContentType(), 'size':fileBlob.getBytes(), 'folder':fldr.getName()};
return fileInfo;
}
I can confirm that this doesn't work in G-Suite Enterprise. I don't know why because I cannot find documentation that says how Google is serializing the data. It could be a browser/computer security setting or something in G-Suite.
However, there is an easier way to accomplish your need. You can use a Google Form with a file upload question and then create an on form submit trigger/event on it to copy the file to a team/shared drive. Here is sample code if you want to attach the trigger to the Google Form itself:
// ID of the destnation folder to save the file in
var destinationFolderID = "10gkU_2V9iYy-VKudOCOjydEpoepPTgPv"
function saveFileToTeamDrive(e)
{
// a place to save the URL of the uploaded file
var fileID;
// go through all of the responses to find the URL of the uploaded file
e.response.getItemResponses().forEach(function(itemResponse){
// once we find the question with the file
if(itemResponse.getItem().getTitle() == "File Upload Test")
{
// get the file ID from the response
fileID = itemResponse.getResponse();
return;
}
});
// stop if we didn't have one
if(!fileID.length) return;
// get the first index in the array
fileID = fileID[0];
// get the file
var file = DriveApp.getFileById(fileID);
// get the destination folder
var destinationFolder = DriveApp.getFolderById(destinationFolderID);
// make a copy
var newFile = file.makeCopy(destinationFolder);
Logger.log(newFile.getUrl());
}
You can also attach to the on form submit event of a Google Sheet that is linked to a Google Form. I find that way easier cause the Google Sheet on form submit trigger/event includes a JSON of the question/answers so you don't have to iterate all of them to find it. It also means you can re-run a submission if it failed.
WARNING
One important note, if you do either of these things do not give anyone else edit access to the code. This is because as soon as you create and authorize the trigger, anyone who has edit access to the code would be able to use it to gain access to your Google Drive (and anything else the trigger is authorized for). Please see securing a Google Apps Script linked to an authorized trigger so others can edit for more information.

Check if user has run it

I run a Google Apps script that uploads a file to the user's Google Drive file:
function doGet(e) {
var blob = UrlFetchApp.fetch(e.parameters.url).getBlob();
DriveApp.createFile(blob);
return HtmlService.createHtmlOutput("DONE!");
}
My site loads a popup window that runs a Google Apps Script with that code. Works fine.
Now, how do I communicate back to my site that they user has successfully uploaded the file? As in, how can I communicate back to my server that the user has run doGet()?`
Some type of response handling must exist?
Full working code (test it out on JSBin):
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.js"></script>
</head>
<body>
<div class="google-upload" data-url="https://calibre-ebook.com/downloads/demos/demo.docx">
<span style="background-color: #ddd">Upload</span>
</div>
<script>
$(function() {
$(".google-upload").click(function() {
var url = "https://script.google.com/macros/s/AKfycbwsuIcO5R86Xgv4E1k1ZtgtfKaENaKq2ZfsLGWZ4aqR0d9WBYc/exec"; // Please input the URL here.
var withQuery = url + "?url=";
window.open(withQuery + $('.google-upload').attr("data-url"), "_blank", "width=600,height=600,scrollbars=1");
});
});
</script>
</body>
</html>
So to clarify, I want a way to find out whether if the user has successfully uploaded the file. Something like:
request.execute(function(response) {
if (response.code == 'uploaded') {
// uploaded, do stuff
} else {
// you get the idea...
}
});
Adding a bounty for a complete solution to this.
Rather than returning a HtmlService object, you can pass data using jQuery's $.getJSON method and retrieve data from the doGet function with ContentService. Google Apps Script does not accept CORS, so using JSONP is the best way to get data to and from your script. See this post for more.
Working CodePen Example
I split your HTML and scripts for clarity. None of the HTML changed from your original example.
Code.gs
function doGet(e) {
var returnValue;
// Set the callback param. See https://stackoverflow.com/questions/29525860/
var callback = e.parameter.callback;
// Get the file and create it in Drive
try {
var blob = UrlFetchApp.fetch(e.parameters.url).getBlob();
DriveApp.createFile(blob);
// If successful, return okay
// Structure this JSON however you want. Parsing happens on the client side.
returnValue = {status: 'okay'};
} catch(e) {
Logger.log(e);
// If a failure, return error message to the client
returnValue = {status: e.message}
}
// Returning as JSONP allows for crossorigin requests
return ContentService.createTextOutput(callback +'(' + JSON.stringify(returnValue) + ')').setMimeType(ContentService.MimeType.JAVASCRIPT);
}
Client JS
$(function() {
$(".google-upload").click(function() {
var appUrl = "https://script.google.com/macros/s/AKfycbyUvgKdhubzlpYmO3Marv7iFOZwJNJZaZrFTXCksxtl2kqW7vg/exec";
var query = appUrl + "?url=";
var popupUrl = query + $('.google-upload').attr("data-url") + "&callback=?";
console.log(popupUrl)
// Open this to start authentication.
// If already authenticated, the window will close on its own.
var popup = window.open(popupUrl, "_blank", "width=600,height=600,scrollbars=1");
$.getJSON(popupUrl, function(returnValue) {
// Log the value from the script
console.log(returnValue.status);
if(returnValue.status == "okay") {
// Do stuff, like notify the user, close the window
popup.close();
$("#result").html("Document successfully uploaded");
} else {
$("#result").html(returnValue);
}
})
});
});
You can test the error message by passing an empty string in the data-url param. The message is returned in the console as well as the page for the user.
Edit 3.7.18
The above solution has problems with controlling the authorization flow. After researching and speaking with a Drive engineer (see thread here) I've reworked this into a self-hosted example based on the Apps Script API and running the project as an API executable rather than an Apps Script Web App. This will allow you to access the [run](https://developers.google.com/apps-script/api/reference/rest/v1/scripts/run) method outside an Apps Script web app.
Setup
Follow the Google Apps Script API instructions for JavaScript. The Apps Script project should be a standalone (not linked to a document) and published as API executable. You'll need to open the Cloud Console and create OAuth credentials and an API key.
The instructions have you use a Python server on your computer. I use the Node JS server, http-server, but you can also put it live online and test from there. You'll need to whitelist your source in the Cloud Console.
The client
Since this is self hosted, you'll need a plain HTML page which authorizes the user through the OAuth2 API via JavaScript. This is preferrable because it keeps the user signed in, allowing for multiple API calls to your script without reauthorization. The code below works for this application and uses the authorization flow from the Google quickstart guides.
index.html
<body>
<!--Add buttons to initiate auth sequence and sign out-->
<button id="authorize-button" style="display: none;">Authorize</button>
<button id="signout-button" style="display: none;">Sign Out</button>
<button onclick="uploadDoc()" style="margin: 10px;" id="google-upload" data-url="https://calibre-ebook.com/downloads/demos/demo.docx">Upload doc</button>
<pre id="content"></pre>
</body>
index.js
// Client ID and API key from the Developer Console
var CLIENT_ID = 'YOUR_CLIENT_ID';
var API_KEY = 'YOUR_API_KEY';
var SCRIPT_ID = 'YOUR_SCRIPT_ID';
// Array of API discovery doc URLs for APIs used by the quickstart
var DISCOVERY_DOCS = ["https://script.googleapis.com/$discovery/rest?version=v1"];
// Authorization scopes required by the API; multiple scopes can be
// included, separated by spaces.
var SCOPES = 'https://www.googleapis.com/auth/drive https://www.googleapis.com/auth/script.external_request';
var authorizeButton = document.getElementById('authorize-button');
var signoutButton = document.getElementById('signout-button');
var uploadButton = document.getElementById('google-upload');
var docUrl = uploadButton.getAttribute('data-url').value;
// Set the global variable for user authentication
var isAuth = false;
/**
* On load, called to load the auth2 library and API client library.
*/
function handleClientLoad() {
gapi.load('client:auth2', initClient);
}
/**
* Initializes the API client library and sets up sign-in state
* listeners.
*/
function initClient() {
gapi.client.init({
apiKey: API_KEY,
clientId: CLIENT_ID,
discoveryDocs: DISCOVERY_DOCS,
scope: SCOPES
}).then(function () {
// Listen for sign-in state changes.
gapi.auth2.getAuthInstance().isSignedIn.listen(updateSigninStatus);
// Handle the initial sign-in state.
updateSigninStatus(gapi.auth2.getAuthInstance().isSignedIn.get());
authorizeButton.onclick = handleAuthClick;
signoutButton.onclick = handleSignoutClick;
// uploadButton.onclick = uploadDoc;
});
}
/**
* Called when the Upload button is clicked. Reset the
* global variable to `true` and upload the document.
* Thanks to #JackBrown for the logic.
*/
function updateSigninStatus(isSignedIn) {
if (isSignedIn && !isAuth) {
authorizeButton.style.display = 'none';
signoutButton.style.display = 'block';
uploadButton.style.display = 'block'
uploadButton.onclick = uploadDoc;
} else if (isSignedIn && isAuth) {
authorizeButton.style.display = 'none';
signoutButton.style.display = 'block';
uploadButton.style.display = 'block';
uploadDoc();
} else {
authorizeButton.style.display = 'block';
signoutButton.style.display = 'none';
uploadButton.style.display = 'none';
isAuth = false;
}
}
/**
* Sign in the user upon button click.
*/
function handleAuthClick(event) {
gapi.auth2.getAuthInstance().signIn();
isAuth = true; // Update the global variable
}
/**
* Sign out the user upon button click.
*/
function handleSignoutClick(event) {
gapi.auth2.getAuthInstance().signOut();
isAuth = false; // update the global variable
}
/**
* Append a pre element to the body containing the given message
* as its text node. Used to display the results of the API call.
*
* #param {string} message Text to be placed in pre element.
*/
function appendPre(message) {
var pre = document.getElementById('content');
var textContent = document.createTextNode(message + '\n');
pre.appendChild(textContent);
}
/**
* Handle the login if signed out, return a Promise
* to call the upload Docs function after signin.
**/
function uploadDoc() {
console.log("clicked!")
var docUrl = document.getElementById('google-upload').getAttribute('data-url');
gapi.client.script.scripts.run({
'scriptId':SCRIPT_ID,
'function':'uploadDoc',
'parameters': [ docUrl ]
}).then(function(resp) {
var result = resp.result;
if(result.error && result.error.status) {
// Error before the script was Called
appendPre('Error calling API');
appendPre(JSON.parse(result, null, 2));
} else if(result.error) {
// The API executed, but the script returned an error.
// Extract the first (and only) set of error details.
// The values of this object are the script's 'errorMessage' and
// 'errorType', and an array of stack trace elements.
var error = result.error.details[0];
appendPre('Script error message: ' + error.errorMessage);
if (error.scriptStackTraceElements) {
// There may not be a stacktrace if the script didn't start
// executing.
appendPre('Script error stacktrace:');
for (var i = 0; i < error.scriptStackTraceElements.length; i++) {
var trace = error.scriptStackTraceElements[i];
appendPre('\t' + trace.function + ':' + trace.lineNumber);
}
}
} else {
// The structure of the result will depend upon what the Apps
// Script function returns. Here, the function returns an Apps
// Script Object with String keys and values, and so the result
// is treated as a JavaScript object (folderSet).
console.log(resp.result)
var msg = resp.result.response.result;
appendPre(msg);
// do more stuff with the response code
}
})
}
Apps Script
The Apps Script code does not need to be modified much. Instead of returning using ContentService, we can return plain JSON objects to be used by the client.
function uploadDoc(e) {
Logger.log(e);
var returnValue = {};
// Set the callback URL. See https://stackoverflow.com/questions/29525860/
Logger.log("Uploading the document...");
try {
// Get the file and create it in Drive
var blob = UrlFetchApp.fetch(e).getBlob();
DriveApp.createFile(blob);
// If successful, return okay
var msg = "The document was successfully uploaded!";
return msg;
} catch(e) {
Logger.log(e);
// If a failure, return error message to the client
return e.message
}
}
I had a hard time getting CodePen whitelisted, so I have an example hosted securely on my own site using the code above. Feel free to inspect the source and take a look at the live Apps Script project.
Note that the user will need to reauthorize as you add or change scopes in your Apps Script project.

Automated download of file from Drive in Web App?

I'm trying to write a polling web app that checks Google Drive and automatically downloads files without user interaction.
Using ContentService I have managed to get things working when I place the code in the doGet function.
However this only works once and there does not appear to be a way to refresh or reload the page automatically on a timer event.
Using a SetTimeout on the client side javascript I can get a function on the server side to automatically trigger at certain intervals but then I am stuck with what to do with the output from ContentService.
The on Success call back will not accept the output from createTextOutput.
My solution does not not need to be deployed and I'm happy to execute from the editor if that expands my choices.
So once I have the output from createTextOutput on my server side what am I supposed to do with it to get it back to the client in order to cause the file download?
I have included the code if that helps.
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<script>
setTimeout(
function ()
{
document.getElementById('results').innerHTML = 'Event Timer';
google.script.run
.withSuccessHandler(onSuccess)
.withFailureHandler(onFailure)
.fetchFromGoogleDrive();
}, 60000);
function onSuccess(sHTML)
{
document.getElementById('results').innerHTML = 'File Downloaded ' + sHTML;
}
function onFailure(error)
{
document.getElementById('results').innerHTML = error.message;
}
</script>
</head>
<body>
<div id="results">Waiting to DownLoad!</div>
id="Fetch">Fetch!</button>
</body>
</html>
function doGet() {
Logger.log('doGet');
return HtmlService.createHtmlOutputFromFile('form.html');
}
function fetchFromGoogleDrive() {
//Logger.Log('fetchFromGoogleDrive');
var fileslist = DriveApp.searchFiles("Title contains 'Expected File'");
if (fileslist.hasNext()) {
//Logger.Log('File found');
var afile = fileslist.next();
var aname = afile.getName();
var acontent = afile.getAs('text/plain').getDataAsString();
var output = ContentService.createTextOutput();
output.setMimeType(ContentService.MimeType.CSV);
output.setContent(acontent);
output.downloadAsFile(aname);
return afile.getDownloadUrl();
}
else
{
//Logger.Log('No File Found');
return 'Nothing to download';
}
//Logger.log('All files processed.');
}
EDIT: Different answer after clarification.
If this is intended to run automated as a webapp what I would do is return the getDownloadUrl and create a new iFrame using that that as the source.
Apps Script
function doGet() {
return HtmlService.createHtmlOutputFromFile('index');
}
function getDownloadLink(){
//slice removes last parameter gd=true. This needs to be removed. slice is a hack you should do something better
return DriveApp.getFileById("0B_j9_-NbJQQDckwxMHBzeVVuMHc").getDownloadUrl().slice(0,-8);
}
index.html
<!DOCTYPE html>
<html>
<head>
<base target="_top">
</head>
<body>
<p id="dlBox"></p>
</body>
<script>
function buildLink(res){
var dlBox = document.createElement("iframe");
dlBox.src = res;
document.getElementById("dlBox").appendChild(dlBox)
}
//automate this as you need
google.script.run
.withSuccessHandler(buildLink)
.getDownloadLink();
</script>
</html>

How to call google apps script server-side functions synchronously?

I wrote a google apps script code, it will open a google spread sheet, and list the values by row, but there are 2 problems:
1. The output by random order.
2. The div text which id "loding" change to "Finished!" before list all of values.
I thought the script will wait for server-side function return when I run it by "withSuccessHandler()", but it's not.
How can I correct it?
index.html:
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<script>
function jsListValue() {
// Get count.
google.script.run.withSuccessHandler(function(count) {
// List all values.
for( count; count>0; count=count-1) {
// Get a value.
google.script.run.withSuccessHandler(function(content) {
// Shows in "output".
var new_div = document.createElement("div");
new_div.appendChild(document.createTextNode(content));
document.getElementById("output").appendChild(new_div);
}).gsGetValue(count);
}
// Change loding notice.
document.getElementById("loding").innerHTML = "Finished!";
}).gsGetCount();
}
</script>
</head>
<body onload="jsListValue()">
<div id="output"></div>
<div id="loding">Loding now...</div>
</body>
</html>
code.gs
function doGet() {
return HtmlService.createHtmlOutputFromFile('index').setSandboxMode(HtmlService.SandboxMode.IFRAME);
}
function gsOpenSheet() {
// Return sheet of the note data.
return (SpreadsheetApp.openById("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx").getSheetByName("sheet1"));
}
function gsGetCount() {
// Return last row index in this sheet.
return (gsOpenSheet().getLastRow());
}
function gsGetValue(index) {
// Return value in the (index,1).
return (gsOpenSheet().getRange(index,1).getValue());
}
GAS is very similar to Javascript, and all calls to Google's server side functions are asynchronous. You cannot change this (at least I haven't seen any doc reg. that).
What you can do, is, use a callback function on the client side which polls the server for a "success" return value. It'll keep polling it say for 1 minute, or else exit. Let it set a client flag to "true" if the success value is returned by the server. Nothing should proceed on the client side, unless the flag is true. In this way, you can control what happens on the client side.
You want to use withSuccessHandler Docs
<!DOCTYPE html>
<html>
<head>
<base target="_top">
<script>
function onSuccess(numUnread) {
var div = document.getElementById('output');
div.innerHTML = 'You have ' + numUnread
+ ' unread messages in your Gmail inbox.';
}
google.script.run.withSuccessHandler(onSuccess)
.getUnreadEmails();
</script>
</head>
<body>
<div id="output"></div>
</body>
</html>
google.script.run is asynchronous, which means that is impossible to predict in what order gsGetValue(count) will return. When you're using withSuccessHandler you must perform the next action inside the callback function.
My suggestion is to get all the range you want and put it on an array. You can create a serverside function to do this. The code would look like this:
//Serverside function
function getDataForSearch() {
const ws = SpreadsheetApp.openById("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx").getSheetByName("sheet1");
return ws.getRange(1,1,ws.getLastRow(),1).getValues();
}
getValues() will return an array of arrays that should contain all values from the range specified. More information about here
On your client-side, the script should be like this:
//array to get the data from getRange()
var data;
function jsListValue() {
google.script.run.withSuccessHandler(function(dataReturned){
data = dataReturned;
var new_div;
data.forEach(function(r){
new_div = document.createElement("div");
new_div.appendChild(document.createTextNode(r[0));
document.getElementById("output").appendChild(new_div);
});
document.getElementById("loding").innerHTML = "Finished!";
}).getDataForSearch();
}
As hinted by #Iuri Pereira If you return a parameter from the google script code, and then use it in the page javascript, then the procedure runs synchronously.
HTML:
<button onclick="google.script.run.withSuccessHandler(js_function).gs_code();">action</button>
GS:
function gs_code() {
// do Something;
return true;
}
HTML javascript:
function js_function(gs_return_value) {
console.log(gs_return_value);
}