[PYTHON] WEB application development using Django [Model definition]

Continued from template addition

Model definition

The function called posts that we are currently creating is based on the image of a function for inputting articles such as blogs, so a database that stores titles, articles, dates, and images is required. I will add this to models.py.

models.py

from django.db import models

#We will define it as a class called Post.
class Post(models.Model): 

    #Definition for title, use CharField for string type
    #max_It is possible to limit the number of characters by length
    title = models.CharField(max_length=100)

    #Define date and time, use DateTimeField for date data
    published = models.DateTimeField() 

    #Definition of image data, use ImageField for image data
    #You can specify the save destination of the image data as an argument (this time, specify the media folder)
    image = models.ImageField(upload_to='media/') 

    #TextField is used for definition of sentences and text type
    #Used for long sentences
    body = models.TextField()

Next, execute the command to create the database table based on models.py.

$ python3.6 manage.py makemigrations

Migrations for 'posts':
  posts/migrations/0001_initial.py
    - Create model Post

If there is a new definition file, it will create a file to put into the database.

Then read the newly created file and create a table.

$ python3.6 manage.py migrate

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, posts, sessions
Running migrations:
  Applying posts.0001_initial... OK

Access the database and check if the table exists.

$ sqlite3 db.sqlite3

SQLite version 3.31.1 2020-01-27 19:55:54
Enter ".help" for usage hints.
sqlite> .tables
auth_group                  django_admin_log          
auth_group_permissions      django_content_type       
auth_permission             django_migrations         
auth_user                   django_session            
auth_user_groups            posts_post #Newly created table
auth_user_user_permissions

You can see that a table called "posts_post" has been created.