[Python] Grades and Attendance form POST data didn't save to the database

I'm currently working on a project where I have to input Grades and Attendance of students using Django. I have the forms for both Grades and Attendance but when I tried submitting it, it didn't show in their specific tables (Grade) and (Attendance). Can anyone help me?

This is my views.py for both:

@login_required
def mark_attendance(request):
students = Student.objects.all()
if request.method == 'POST':
form = AttendanceForm(request.POST)
if form.is_valid():
form.save()
return redirect('attendance')
else:
form = AttendanceForm()
return render(request, 'mark_attendance.html', {'form': form, 'students': students})

@login_required
def input_grades(request):
students = Student.objects.all()
subjects = Subject.objects.all()
form = GradesForm()
if request.method == 'POST':
form = GradesForm(request.POST)
if form.is_valid():
form.save()
return redirect('grades')
else:
print(form.errors) # This will print errors in the console
return render(request, 'input_grades.html', {'form': form, 'students': students, 'subjects': subjects})


Here's my forms.py for both:

# Attendance Form
class AttendanceForm(forms.ModelForm):
class Meta:
model = Attendance
fields = ['student', 'date', 'is_present']
widgets = {
'date': forms.DateInput(attrs={'type': 'date'}),
}

# Grades Form
class GradesForm(forms.ModelForm):
class Meta:
model = Grades
fields = ['student', 'subject', 'quarter', 'grade']
widgets = {
'grade': forms.TextInput(attrs={'class': 'form-control'}),
'student': forms.Select(attrs={'class': 'form-control'}),
'subject': forms.Select(attrs={'class': 'form-control'}),
'quarter': forms.TextInput(attrs={'class': 'form-control'}),
}


Forms in their html files:

• mark_attendance.html

<div class="content">
<h2>Mark Attendance</h2>
<form method="post">
{% csrf_token %}
<div class="form-group">
<label for="student">Student:</label>
<select id="student" name="student">
<option value="">Select Student</option>
{% for student in students %}
<option value="{{ student.id }}">{{ student.first_name }} {{ student.last_name }}</option>
{% endfor %}
</select>
</div>

<div class="form-group">
<label for="date">Date:</label>
<input type="date" id="date" name="date">
</div>

<div class="form-group">
<label for="is_present">Present:</label>
<input type="checkbox" id="is_present" name="is_present">
</div>
<button type="submit">Submit</button>
</form>

• 
  input_grades.html
  
  <div class="content">
  <h2>Input Grades</h2>
  <form method="post">
  {% csrf_token %}
  <div class="form-group">
  <label for="student">Student:</label>
  <select id="student" name="student">
  <option value="">Select Student</option>
  {% for student in students %}
  <option value="{{ student.id }}">{{ student.first_name }} {{ student.last_name }}</option>
  {% endfor %}
  </select>
  </div>
  <div class="form-group">
  <label for="subject">Subject:</label>
  <select id="subject" name="subject">
  <option value="">Select Subject</option>
  {% for subject in subjects %}
  <option value="{{ subject.id }}">{{ subject.subject_name }}</option>
  {% endfor %}
  </select>
  </div>
  <div class="form-group">
  <label for="quarter">Quarter:</label>
  <select id="quarter" name="quarter">
  <option value="">Select Quarter</option>
  <option value="Q1">Q1</option>
  <option value="Q2">Q2</option>
  <option value="Q3">Q3</option>
  <option value="Q4">Q4</option>
  </select>
  </div>
  <div class="form-group">
  <label for="grade">Grade:</label>
  <input type="text" id="grade" name="grade">
  </div>
  <button type="submit">Submit</button>
  </form>
  </div>

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