sqlalchemy-datatables 0.1.5

SQLAlchemy integration of jQuery DataTables

Usage

The package is available on PyPI

pip install sqlalchemy-datatables

A simple example

models.py

class User(Base):
    __tablename__ = 'users'

    id          = Column(Integer, primary_key=True)::
    name        = Column(Text, unique=True)
    created_at  = Column(DateTime, default=datetime.datetime.utcnow)

    address     = relationship("Address", uselist=False, backref="user")

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

class Address(Base):
    __tablename__ = 'addresses'

    id          = Column(Integer, primary_key=True)
    description = Column(Text, unique=True)
    user_id     = Column(Integer, ForeignKey('users.id'))

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

views.py

from .models import DBSession, User
from datatables import ColumnDT, DataTables

def _upper(chain):
    ret = chain.upper()
    if ret:
        return ret
    else:
        return chain

@view_config(route_name='home', renderer='templates/home.pt')
def home(request):
    return {'project': 'test-project'}

@view_config(route_name='simple_example', request_method='GET', renderer='json')
def simple_example(request):
    # defining columns
    columns = []
    columns.append(ColumnDT('id'))
    columns.append(ColumnDT('name', filter=_upper))
    columns.append(ColumnDT('address.description')) # where address is an SQLAlchemy Relation
    columns.append(ColumnDT('created_at', filter=str))

    # defining the initial query depending on your purpose
    query = DBSession.query(User).join(Address).filter(Address.id > 14)

    # instantiating a DataTable for the query and table needed
    rowTable = DataTables(request, User, query, columns)

    # returns what is needed by DataTable
    return rowTable.output_result()

templates/home.pt

<!--do your stuff-->
<table class="table" id="simple-example">
    <thead>
        <tr>
            <th>Id</th>
            <th>User name</th>
            <th>Address description</th>
            <th>Created at</th>
        </tr>
    </thead>
    <tbody></tbody>
</table>
<!--do your stuff-->
<script type="text/javascript" charset="utf-8">
    $(document).ready(function(){
        $('#simple-example').dataTable({
            "bProcessing": true,
            "bServerSide": true,
            "sAjaxSource": "${request.route_path('simple_example')}"
        });
    });
</script>

Testing the Pyramid based ‘’test-project’’

$ git clone
$ virtualenv --no-site-packages sqlalchemy-datatables
$ cd sqlalchemy-datatables/
Once only:
$ bin/python setup.py develop

$ cd test-project/
$ $venv/bin/python setup.py develop
$ $venv/bin/initialize_test-project_db development.ini
$ $venv/bin/pserve development.ini

Open a web browser and got to the url localhost:6543

Changelog

v0.1.5 (18/10/2013)

• Become aware of bSearchable_* properties, while doing a global search

• Fixed bug throwed while searching Id columns

• Fixing bug throwed while showing in ColumnDT, an SQLAlchemy’s @hybrid_property or a Python @property

• README modifications

v0.1.4 (17/09/2013)

• Searching individual columns, with special like possibilities

v0.1.3 (16/09/2013)

• Fixing setup.py’s README error on develop

v0.1.2 (13/08/2013)

• Fixing errors due to relationships (filtering, sorting)

• Setting filter default value to str, avoiding JSON serializable type errors

v0.1.1 (12/08/2013)

• Fixing viewing column relationships

v0.1.0 (12/08/2013)

• First version

License

Copyright (c) 2013 Michel Nemnom

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.