How do you create model objects in a Django view?

Question

I know how to create model objects via a submitted form, but I'm wondering how to create objects in a view without having to go through a form. I'm aware that this can be done via the shell, but I have different reasons for doing it in the view.

As an example let's say I have a blog table that has a title and a body. How would I create a new object that sets the fields of the title and body?

def create_blog(request):
    # Create a new blog object.
    blog_obj.title= "First Blog"
    blog_obj.body= "This is the body"

Update: Here is my model.py

from django.db import models 

class Rating(models.Model):
    movie_name= models.CharField(max_length=100)
    total_ratings = models.IntegerField()
    total_rating_value = models.IntegerField()
    rating_average = models.DecimalField(max_digits=2, decimal_places=2)

Update 2: when I try saving my object it returns an error (class 'decimal.InvalidOperation'). rating_average is a Decimal_field. This is my actual object:

rating_obj = Rating(movie_name="Test Movie", total_ratings=1, total_rating_value= 5, rating_average= 5.0)

Answer 1

This is straight forward Python code and nothing specific to Django:

blog_obj = Blog(title="First Blog", body="This is the body")

Maybe you want to go through the good and easy to understand Django tutorial?

EDIT:
In order to solve your problem with your DecimalField you need to set max_digits greater than decimal_places.

From the docs:

Note that this number must be greater than or equal to decimal_places.

Answer 2

Creating a model manager is recommended. Example from here:

class BookManager(models.Manager):
    def create_book(self, title):
        book = self.create(title=title)
        # do something with the book
        return book

class Book(models.Model):
    title = models.CharField(max_length=100)

    objects = BookManager()

book = Book.objects.create_book("Pride and Prejudice")