Google Classroom API

models.py

import os
import pickle
from google.auth.transport.requests import Request # pip install --upgrade google-api-python-client google-auth-httplib2 google-auth-oauthlib
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build
from django.db import models
from django.conf import settings

# Create your models here.
class Greeting(models.Model):
    when = models.DateTimeField("date created", auto_now_add=True)


class Classroom(models.Model):

    service = None

    def get_token(self):
        """ The file token.pickle stores the user's access and refresh tokens,
        and is created automatically when the authorization flow completes
        for the first time"""
        creds = None
        if os.path.exists('token.pickle'):
            with open('token.pickle', 'rb') as token:
                creds = pickle.load(token)
                return creds

    def save_token(self, credentials):
        """Save the credentials for next run"""
        with open('token.pickle', 'wb') as token:
            pickle.dump(credentials, token)

    def login(self):
        """If there are no (valid) credentials available, let the user log in"""
        creds = self.get_token()
        if not creds or not creds.valid:
            if creds and creds.expired and creds.refresh_token:
                creds.refresh(Request())
            else:
                flow = InstalledAppFlow.from_client_secrets_file('credentials.json', settings.GOOGLE_API_SCOPES)
                creds = flow.run_local_server(port=0)
                self.save_token(credentials=creds)
                self.service = build('classroom', 'v1', credentials=creds)

    def list_courses(self):
        results = self.service.courses().list().execute()
        return results.get('courses', [])



class Course(models.Model):
    id = models.CharField(max_length=12)
    name = models.CharField('Turma', max_length=60)

    def __str__(self):
        return self.name