no migrations to apply after deleting a field in models

[amirreza taherkhani]

I have this models: 

class Genre(models.Model):
    genre       = models.CharField(max_length=100)

    def __str__(self):
        return self.genre


class Book(models.Model):
    book_name   = models.CharField(max_length=150)
    summary     = models.TextField(max_length=1000, null=True,blank=True)
    author      = models.ForeignKey('Author', on_delete=models.CASCADE)
    genre       = models.ManyToManyField(Genre)
    status = [
        ('a', 'available'),
        ('b', 'borrowed'),
        ('r', 'reserved'),
    ]
    book_status = models.CharField(max_length=1, choices=status, default='a')

    def __str__(self):
        return '{0}({1})'.format(self.book_name, self.author)

    def get_absolute_url(self):
        return reverse('main_app:book-detail', args=[self.id])


class Author(models.Model):
    first_name  = models.CharField(max_length=200)
    last_name   = models.CharField(max_length=200)
    rate        = models.IntegerField(default=0)

    def __str__(self):

return '{0} {1}'.format(self.first_name,self.last_name)

and i deleted an uuidfield from book table...

then i deleted this file -> 0001_initial.py

and then run : py manage.py makemigrations and migrate

but migrate is not available to recognize the changes :

C:\Users\amir\Documents\GitHub\simple_library> py  manage.py makemigrations

Migrations for 'main_app':

  main_app\migrations\0001_initial.py

    - Create model Author

    - Create model Book

    - Create model Genre

    - Add field genre to book

C:\Users\amir\Documents\GitHub\simple_library> py manage.py migrate

Operations to perform:

  Apply all migrations: admin, auth, contenttypes, main_app, sessions

Running migrations:

  No migrations to apply.

what should i do now?

[Nelson Varela]

Don't delete the 0001_initial file!

That is your first state. Just delete the field from you model and do makemigrations again.. You wil get a 0002_ file which deletes the field.