Added Filters for the File

backend/api/models.py

@@ -5,3 +5,57 @@ from django.db import models
 
 class PeerUser(AbstractUser):
     ip_address = models.GenericIPAddressField(blank=True, null=True)
+    last_poll = models.DateTimeField(auto_now_add=True)
+
+
+class Topic(models.Model):
+    name = models.CharField(max_length=100, blank=False, null=False)
+    description = models.TextField(blank=True)
+
+    def __str__(self) -> str:
+        return self.name
+
+
+class Professor(models.Model):
+    name = models.CharField(max_length=100, blank=False, null=False)
+
+    def __str__(self) -> str:
+        return self.name
+
+
+class Semester(models.Model):
+    name = models.CharField(max_length=20, blank=False, null=False)
+
+    def __str__(self) -> str:
+        return self.name
+
+
+class Course(models.Model):
+    name = models.CharField(max_length=40, blank=True)
+    number = models.CharField(max_length=20, blank=False, null=False, unique=True)
+
+    def __str__(self) -> str:
+        return self.number + f" ({self.name})"
+
+
+class File(models.Model):
+    filename = models.CharField(max_length=200, blank=False, null=False)
+    original_author = models.ForeignKey(
+        PeerUser, on_delete=models.SET_NULL, null=True, related_name="owned_files"
+    )
+    peer_users = models.ManyToManyField(PeerUser, related_name="shared_files")
+    topic = models.ForeignKey(
+        Topic, on_delete=models.SET_NULL, null=True, related_name="files"
+    )
+    professor = models.ForeignKey(
+        Professor, on_delete=models.SET_NULL, null=True, related_name="files"
+    )
+    semester = models.ForeignKey(
+        Semester, on_delete=models.SET_NULL, null=True, related_name="files"
+    )
+    course = models.ForeignKey(
+        Course, on_delete=models.SET_NULL, null=True, related_name="files"
+    )
+
+    def __str__(self):
+        return self.filename