Python Shell 이용하여 명령어 실행시키기

 

1. shell로 들어가자

$ python manage.py shell
Python 3.8.5 (v3.8.5:580fbb018f, Jul 20 2020, 12:11:27) 
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)

 

2. model을 가져와서 지금 들어 있는 Query set이 얼마나 있는지 확인하자

>>> from HelloWorld.models import Post
>>> Post.objects.all()
<QuerySet []>

 

3. 저장된 Query가 없으니 하나 넣어서 잘 들어갔는지 확인해 보자

>>> post = Post(post_title="This is a Blog Title", post_subtitle="This is a Blog Subtitle", post_contents="This is a content.")
>>> post.save()
>>> post.id
1
>>> post.post_title
'This is a Blog Title'
>>> post.post_subtitle
'This is a Blog Subtitle'
>>> post.post_contents
'This is a content.'

 

4. 저장된 내용을 변경해 보자

>>> post.post_contents = "This is my contents"
>>> post.save()
>>> Post.objects.all()
<QuerySet [<Post: Post object (1)>]>
>>> post.post_contents
'This is my contents'

 

5. Post Object 상태보기

>>> Post.objects.all()
<QuerySet [<Post: Post object (1)>]>

 

6. 5번 처럼 Object 갯수만 보여주면 Post가 뭔지 모르므로 Post table에 별명을 지어주기 위해 model.py에 __str__(self) method를 추가하자

import datetime
from django.db import models
from django.utils import timezone

# Create your models here.
class Post(models.Model):
    post_title = models.CharField(max_length=200)
    post_subtitle = models.CharField(max_length=200)
    post_contents = models.CharField(max_length=3000)

    def __str__(self):
        return self.post_title

 

7. 다시 명령어 실행 결과

>>> Post.objects.all()
<QuerySet [<Post: This is a Blog Title>]>