https://github.com/JoseVL92/sqlalchemy_multiconnector

Easy connector for SQL Databases, support for sqlite, postgresql and mysql
https://github.com/JoseVL92/sqlalchemy_multiconnector

Last synced: about 2 months ago
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Easy connector for SQL Databases, support for sqlite, postgresql and mysql

• Host: GitHub
• URL: https://github.com/JoseVL92/sqlalchemy_multiconnector
• Owner: JoseVL92
• License: mit
• Created: 2019-09-03T14:01:47.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2023-12-11T18:27:41.000Z (about 1 year ago)
• Last Synced: 2024-05-20T03:20:26.873Z (7 months ago)
• Language: Python
• Size: 70.3 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.txt

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README

        
# sqlalchemy-multiconnector  

Python SQLAlchemy connector for SQL databases (sqlite, postgresql and mysql).  

Easy resources CRUD management.  

Supports multi-tenancy with multiple databases and/or multiple schemas.

## Example of use

```python

from sqlalchemy import Boolean, Column, ForeignKey, Integer, String, Text  

from sqlalchemy.orm import relationship  

from sqlalchemy_multiconnector import BASE, SQLConnector, manage_session  

  

  

DB_TYPE = 'postgresql'  # it also accepts 'mysql' and 'sqlite'

DB_HOST = 'hostname'  

DB_PORT = 5432

DB_NAME = 'test'

DB_USER = 'username'  

DB_PASSWD = 'password'  

  

  

class User(BASE):

    __tablename__ = 'users'  

    id = Column(Integer, autoincrement=True, primary_key=True)  

    username = Column(String)  

    active = Column(Boolean, default=True)  

    articles = relationship('Article', back_populates='user')  

  

  

class Article(BASE):  

    __tablename__ = 'articles'  

    id = Column(Integer, autoincrement=True, primary_key=True)  

    title = Column(String)  

    description = Column(Text, nullable=True)  

    user_id = Column(Integer, ForeignKey(User.id))  

    user = relationship('User', back_populates='articles')

# If some schema should be used, you can specify it on object creation

db_connection = SQLConnector(DB_TYPE, DB_HOST, DB_NAME, DB_PORT,  

                             db_schemas=['schema1', 'schema2'],

                             db_user=DB_USER,

                             db_passwd=DB_PASSWD)

# or with 'schemas' property

db_connection.schemas = ['schema1', 'schema2']

# or in 'create_tables' method

db_connection.create_tables(schemas=['schema1', 'schema2'])

# add a user in schema1

user_id = db_connection.create_resource(User, {'username': 'Usuario', 'is_active': False}, return_id=True, schema_name='schema1')

# add an article related to this user

with db_connection.session_scope(schema_name = 'schema1') as session:

	user_owner = session.query(User).get(user_id)

	article_id = db_connection.create_resource(Article, {'title': 'Hi', 'user': user_owner}, session=session)

# update article title

db_connection.update_resource(Article, pk=article_id, updated_fields: {'title': 'Hi again!'})

# get and delete a specific resource and list all resources are also available

```