Not able to retrieve data from MongoDB using Flask [closed] - mongodb

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I have extablised a successful db connection in flask and trying to display courses in courses.html as follows:
#app.route('/courses')
#app.route('/courses/<term>')
def courses(term = None):
if term == None:
term= 2023
classes = Courses.objects.all()
return render_template('courses.html', coursesData=classes, courses=True, term=term)
The courses class is as follows:
class Courses(db.Document):
courseID=db.StringField(max_length=10, unique=True)
title = db.StringField(max_length=100)
description = db.StringField(max_length=300)
credits = db.IntField()
term=db.StringField(max_length=100)
The courses.html page is as follows:
<table class="table table-hover">
<thead>
<tr>
<th scope="col">Course ID</th>
<th scope="col">Title</th>
<th scope="col">Description</th>
<th scope="col">Credits</th>
<th scope="col">Term</th>
<th scope="col">Enroll</th>
</tr>
</thead>
<tbody>
{% for data in coursesData %}
<tr>
<td scope='row'>{{ data["courseID"] }}</td>
<td>{{ data["title"] }}</td>
<td>{{ data["description"] }}</td>
<td>{{ data["credits"] }}</td>
<td>{{ data["term"] }}</td>
<td>
<form action="{{ url_for('enrollment') }} " , method="POST">
<input type="hidden" name="id" value="{{ data[ 'courseID' ] }}">
<input type="hidden" name="title" value="{{ data[ 'title' ] }}">
<input type="hidden" name="term" value="{{ data[ 'term' ] }}">
<button>Enroll</button>
</form>
</td>
</tr>
{% endfor %}
</tbody>
When i run it, no courses were displayed. Can anyone please help me with this?

Answer 1

Instead of:
classes = Courses.objects.all()
Could you please try:
classes = Courses.query.all()
That is the "legacy query interface", the latest syntax is HERE.