Google Apps Script quickstart

Create a Google Apps Script that makes requests to the Google Classroom API.

Quickstarts explain how to set up and run an app that calls a Google Workspace API. This quickstart uses a simplified authentication approach that is appropriate for a testing environment. For a production environment, we recommend learning about authentication and authorization before choosing the access credentials that are appropriate for your app.

In Apps Script, Google Workspace quickstarts use Advanced Google services to call Google Workspace APIs and handle some details of the authentication and authorization flow.

Objectives

• Configure the environment.
• Create and configure the script.
• Run the script.

Prerequisites

• A Google for Education account with Google Classroom enabled.

• Access to Google Drive

Create the script

1. Create a new script in the Apps Script editor by going to script.google.com/create .
2. Replace the contents of the script editor with the following code:

 /** 
 * Lists 10 course names and ids. 
 */ 
 function 
  
 listCourses 
 () 
  
 { 
  
 /**  here pass pageSize Query parameter as argument to get maximum number of result 
 * @see https://developers.google.com/classroom/reference/rest/v1/courses/list 
 */ 
  
 const 
  
 optionalArgs 
  
 = 
  
 { 
  
 pageSize 
 : 
  
 10 
  
 // Use other parameter here if needed 
  
 }; 
  
 try 
  
 { 
  
 // call courses.list() method to list the courses in classroom 
  
 const 
  
 response 
  
 = 
  
 Classroom 
 . 
 Courses 
 . 
 list 
 ( 
 optionalArgs 
 ); 
  
 const 
  
 courses 
  
 = 
  
 response 
 . 
 courses 
 ; 
  
 if 
  
 ( 
 ! 
 courses 
  
 || 
  
 courses 
 . 
 length 
  
 === 
  
 0 
 ) 
  
 { 
  
 console 
 . 
 log 
 ( 
 'No courses found.' 
 ); 
  
 return 
 ; 
  
 } 
  
 // Print the course names and IDs of the courses 
  
 for 
  
 ( 
 const 
  
 course 
  
 of 
  
 courses 
 ) 
  
 { 
  
 console 
 . 
 log 
 ( 
 '%s (%s)' 
 , 
  
 course 
 . 
 name 
 , 
  
 course 
 . 
 id 
 ); 
  
 } 
  
 } 
  
 catch 
  
 ( 
 err 
 ) 
  
 { 
  
 // TODO (developer)- Handle Courses.list() exception from Classroom API 
  
 // get errors like PERMISSION_DENIED/INVALID_ARGUMENT/NOT_FOUND 
  
 console 
 . 
 log 
 ( 
 'Failed with error %s' 
 , 
  
 err 
 . 
 message 
 ); 
  
 } 
 } 

3. Click Save.
4. Click Untitled project , type Quickstart , and click Rename .

Configure the script

Enable the Google Classroom API

Open the Apps Script project.

1. Click Editor code .
2. Next to Services, click Add a service add .
3. Select Google Classroom API and click Add.

Run the sample

In the Apps Script editor, click Run.

The first time you run the sample, it prompts you to authorize access:

1. Click Review permissions.
2. Choose an account.
3. Click Allow.

The script's execution log appears at the bottom of the window.

Next steps

• Google Apps Script Advanced Services documentation
• Try the Google Workspace APIs in the APIs explorer
• Troubleshoot authentication and authorization issues
• Classroom API reference documentation