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A simple ORM for SQLite

Project description


A Python object relational mapper for SQLite.


pip install simple-orm


Following a basic tutorial to demonstrate how to use the ORM.

  1. Define a Post model in a file.

    from orm import Model
    class Post(Model):
        text = str  # other datatypes: int, float
        def __init__(self, text):
            self.text = text
  2. Import Database to create a data access object.

    >>> from orm import Database
    >>> db = Database('db.sqlite')  # indicating a database file.
  3. Import the Post model and link it to the database.

    >>> from post import Post
    >>> Post.db = db  # see another approach in
  4. Create a post and save it in the staging area (without commit) of database.

    >>> post = Post('Hello World').save()
    >>> print(  # auto generated id
  5. Change the hello world post and update it in the database.

    >>> post = Post.manager().get(id=1)
    >>> post.text = 'Hello Mundo'
    >>> post.update()
    >>> post.text
    Hello Mundo
  6. Commit all staged operations (save and update) to the database.

    >>> db.commit()
  7. Delete the object and commit.

    >>> post.delete()
    >>> db.commit()
  8. Create a manager that can perform CRUD operations in the database.

    >>> objects = Post.manager(db)
  9. Save and get a post.

    >>>'Hello', 'World'))
    >>> objects.get(2)  # get by id from the staging area
    {'text': 'World', 'id': 2, 'title': 'Hello'}
  10. Close the database without commit the changes

    >>> db.close()
  11. Get all posts from database.

    >>> list(objects.all())  # return a "empty" generator


Check code lint:

pip install pylint





The MIT License.

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