Conditions in IF Statements requires values to be specified explicitly - django

Question

I have created a template that displays items from a loop, Within the loop there is a condition, but the condition does not work unless specified explicitly.
{% extends 'blog/base.html' %}
{% block content %}
<h3>{{ user.username }}</h3>
{% for project in projects %}
{% if user.username == 'testuser' %}
<h5>{{ project.title }}</h5>
<p>{{ project.description }}</p>
<p>{{ project.objectives }}</p>
<pre>{{ project.score }}</pre>
<pre>{{ project.student_id }}</pre>
{% endif %}
{% endfor %}
{% endblock content %}
The above code works perfectly and returns the records assigned to the user named testuser.
But if I write the code as below, it skips all records
{% extends 'blog/base.html' %}
{% block content %}
<h3>{{ user.username }}</h3>
{% for project in projects %}
{% if user.username == project.student_id %}
<h5>{{ project.title }}</h5>
<p>{{ project.description }}</p>
<p>{{ project.objectives }}</p>
<pre>{{ project.score }}</pre>
<pre>{{ project.student_id }}</pre>
{% endif %}
{% endfor %}
{% endblock content %}
I have added the code from the model
from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
class Projects(models.Model):
title = models.CharField(max_length=150)
description = models.TextField()
objectives = models.TextField()
score = models.IntegerField()
#file = models.FileField()
date_posted = models.DateTimeField(default=timezone.now)
student_id = models.ForeignKey(User,on_delete=models.CASCADE)
def __str__(self):
return self.title

Answer 1

The student_id is a User object, not a string, so here you are comparing a string (the username) with a User object, and a User with username 'testuser', is not the same as a string 'testuser'.
The most elegant solution is probably to compare the user with the user, so:
{% if user == project.student_id %}
So we omit the .username, and compare a User object with a User object.
Note: enumeration (especially in a template, but also in the Django layer itself), is not efficient, you should make a query that
does the filtering for you.
You can filter a queryset with:
user_projects = Project.objects.filter(student_id=request.user)
in your view to obtain only projects for which the logged in user is
the student.
Note: A ForeignKey usually does not have an _id suffix. Django will automatically add an extra field named fieldname_id that
stores the primary key to which the foreign key refers. After all, a
ForeignKey in Django will lazy load the related object.