Pyramid Listing

Pyramid Listing contains pyramid resources and helpers for pagination of result lists.

A lot of pyramid applications that use a (SQL) database need to list the result of queries. This result list might get quite long and are split into several pages. This package is offering some help in this.

Quickstart

Lets assume, that you'd like to start a cheese shop and define a simple database model in the pyramid application:

from .meta import Base

class Cheese(Base):
    id = Column(Integer, primary_key=True)
    name = Column(Text, nullable=False)

To get a result list including pagination, just create a sub-class from pyramid_listing.SQLAlchemyListing and define a get_base_query method:

from pyramid_listing import SQLAlchemyListing

class CheeseList(SQLAlchemyListing):

    def get_base_query(self, request)
        return request.dbsession.query(Cheese)

In a view you could then use this class to autmagically get paged results:

@view_config(route_name='cheeses')
def cheese_list_view(request):
    listing = CheeseList(request)
    return {'cheeses': listing.items(), 'pagination': listing.pages}

With this URLs you could access different result pages:

shows page 3:

https://example.com/cheeses?p=3

shows page 1 with 42 items per page:

https://example.com/cheeses?p=1&n=42

Features

• automatically calculate pagination information like first, next or last page from pyradmid.request.GET parameters
• loading configuration defaults from .ini files
• easily implement ordering and filtering of results
• helper method for creating pyradmid.request.GET parameters for different pages
• base class for listings as location aware pyramid resources

Example Project

To see this in action install the sample project from https://github.com/holgi/pyramid_listing_example and take a look at it