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iurisilvio
125 Stars 21 Forks MIT License 82 Commits 0 Opened issues

Description

Bottle SQLAlchemy plugin

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This bottle-sqlalchemy plugin integrates SQLAlchemy with your Bottle application. It injects a SQLAlchemy session in your route and handle the session cycle.

Usage Example:

import bottle
from bottle import HTTPError
from bottle.ext import sqlalchemy
from sqlalchemy import create_engine, Column, Integer, Sequence, String
from sqlalchemy.ext.declarative import declarative_base

Base = declarative_base() engine = create_engine('sqlite:///:memory:', echo=True)

app = bottle.Bottle() plugin = sqlalchemy.Plugin( engine, # SQLAlchemy engine created with create_engine function. Base.metadata, # SQLAlchemy metadata, required only if create=True. keyword='db', # Keyword used to inject session database in a route (default 'db'). create=True, # If it is true, execute metadata.create_all(engine) when plugin is applied (default False). commit=True, # If it is true, plugin commit changes after route is executed (default True). use_kwargs=False # If it is true and keyword is not defined, plugin uses **kwargs argument to inject session database (default False). )

app.install(plugin)

class Entity(Base): tablename = 'entity' id = Column(Integer, Sequence('id_seq'), primary_key=True) name = Column(String(50))

def __init__(self, name):
    self.name = name

def __repr__(self):
    return "<entity>" % (self.id, self.name)

@app.get('/:name') def show(name, db): entity = db.query(Entity).filter_by(name=name).first() if entity: return {'id': entity.id, 'name': entity.name} return HTTPError(404, 'Entity not found.')

@app.put('/:name') def put_name(name, db): entity = Entity(name) db.add(entity)

@app.get('/spam/:eggs', sqlalchemy=dict(use_kwargs=True)) @bottle.view('some_view') def route_with_view(eggs, db): # do something useful here

It is up to you create engine and metadata, because SQLAlchemy has a lot of options to do it. The plugin just handle the SQLAlchemy session.

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