Added relationship between user and subjects

stude/subjects/admin.py

@@ -1,6 +1,6 @@
 from django.contrib import admin
 from courses.models import Course
-from .models import Subject
+from .models import Subject, SubjectStudent
 
 
 class SubjectAdmin(admin.ModelAdmin):
@@ -8,3 +8,4 @@ class SubjectAdmin(admin.ModelAdmin):
 
 
 admin.site.register(Subject, SubjectAdmin)
+admin.site.register(SubjectStudent)

stude/subjects/migrations/0002_subjectstudent_subject_students.py

@@ -0,0 +1,29 @@
+# Generated by Django 4.2.2 on 2023-06-28 03:09
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+        ('subjects', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='SubjectStudent',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('subject', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='subjects.subject')),
+                ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.AddField(
+            model_name='subject',
+            name='students',
+            field=models.ManyToManyField(related_name='SubjectStudent_subject', through='subjects.SubjectStudent', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

stude/subjects/models.py

@@ -9,6 +9,8 @@ class Subject(models.Model):
     code = models.CharField(max_length=16)
     courses = models.ManyToManyField(
         'courses.Course', through='courses.SubjectCourse', related_name='SubjectCourse_subject')
+    students = models.ManyToManyField(
+        'accounts.CustomUser', through='subjects.SubjectStudent', related_name='SubjectStudent_subject')
 
     year_level = models.ForeignKey(
         Year_Level,
@@ -24,3 +26,13 @@ class Subject(models.Model):
 
     def __str__(self):
         return self.name
+
+
+class SubjectStudent(models.Model):
+    user = models.ForeignKey(
+        'accounts.CustomUser', on_delete=models.CASCADE)
+    subject = models.ForeignKey(
+        'subjects.Subject', on_delete=models.CASCADE)
+
+    def __str__(self):
+        return f'User: User={self.user_id}, Subject={self.subject_name}'