Remove all migration files and unused CSS files from the project.

courses/models.py

@@ -1,22 +1,37 @@
 from django.db import models
 from django.contrib.auth.models import User
-from django.utils.html import escape
 
 class Course(models.Model):
     name = models.CharField(max_length=200)
-    content = models.TextField()
+    slug = models.SlugField(unique=True)
+    tags = models.CharField(max_length=200)
     author = models.ForeignKey(User, on_delete=models.CASCADE)
-    thumbnail = models.ImageField(upload_to='static/uploads/thumbnails/courses/', default='default.jpg')
+    thumbnail = models.ImageField(upload_to='thumbnails/courses/', default='default.jpg')
+    description = models.TextField()
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
+    enable = models.BooleanField(default=True)
 
     def __str__(self):
         return self.name
 
-class Lesson(models.Model):
-    course_id = models.ForeignKey(Course, on_delete=models.CASCADE, related_name='lecons')
+class Module(models.Model):
     name = models.CharField(max_length=200)
+    slug = models.SlugField()
+    course = models.ForeignKey(Course, on_delete=models.CASCADE, related_name='modules')
+    description = models.TextField()
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+    enable = models.BooleanField(default=True)
+    order = models.PositiveIntegerField()
+
+class Lesson(models.Model):
+    name = models.CharField(max_length=200)
+    slug = models.SlugField()
+    module = models.ForeignKey(Module, on_delete=models.CASCADE, related_name='lessons')
     content = models.TextField()
+    video_id = models.CharField(max_length=200, blank=True)
+    is_premium = models.BooleanField(default=False)
     order = models.PositiveIntegerField()
 
     def clean(self):