hziling / ORM

ORM

ORM for sqlite3 like Django ORM.

Usage:

from datetime import datetime
import database

db = database.Sqlite('blog.db')

class Post(db.Model):
    title = database.CharField(20)
    content = database.TextField()
    created_time = database.DateTimeField()

db.create_table(Post)

post = Post(title='post title', content='post content', created_time=datetime.now())
post.save()

post.id, post.title, post.content
Out: (5, 'post title', 'post content', datetime.datetime(2016, 1, 6, 17, 25, 37, 342000))

print Post.select().where(id=5).all()
Out: [<Post post title>]

The ManyToManyField just like Django ManyToManyField:

class Tag(db.Model):
    name = database.CharField(50)
    posts = database.ManyToManyField(Post)

When create table from class Tag, ORM will auto-create a table post_tag which referenced Post and Tag. We can add tag to the post like this:

tag = Tag(name='tag')
tag.save()

post.tags.add(tag)
post.tags.all()
Out: [<Tag tag>]