Postgresql search handler for Django-Oscar

This creates a search handler without the need of any search backend. It is designed for the e-commerce framework Oscar.

It is implemented a little bit expensive but uses 4 annotated search vectors: * upc * title * meta_description * meta_title

This way the search can be manipulated through the meta fields. It is running productive in a heavily customized env for many months now. I think it should scale up to 5000 Products with 10 Attributes depending on how the products are loaded. We use it fully lazy with endless scrolling.

To-Do

• Provide a generic way to use filter forms
• Writing Tests

Features

• Don't need to use some additional search backend like elastic
• Creates filters (facets) for:
  • Data that is directly attached to the Product model
  • including foreign key choices
  • AttributeValues of the products
  • StockRecord entries

Installation

Basic

Install using pip:

pip install django-oscar-pg-search

# settings.py

# replace 'oscar.apps.search.apps.SearchConfig' by 'oscar_pg_search.apps.PgSearchConfig'
INSTALLED_APPS = [
	# 'oscar.apps.search.apps.SearchConfig',
    'oscar_pg_search.apps.PgSearchConfig',
]

OSCAR_PRODUCT_SEARCH_HANDLER = 'oscar_pg_search.postgres_search_handler.PostgresSearchHandler'

# To avoid exception, haystack is not used:
HAYSTACK_CONNECTIONS = {"default": {}}

Trigram search is our search algorithm. Enable it at your database by executing the following sql:

CREATE EXTENSION pg_trgm;

Optional Search box

To install the included Search box that passes the previous search term. (eg. in 'oscar/partials/search.html')

{% include 'oscar_pg_search/partials/search.html' %}

Optional Filter Forms

To use the included filter forms, include them in the template eg. in 'oscar/layout_2_col.html' after '{% block column_left_extra %}{% endblock %}'.

{% include 'oscar_pg_search/catalogue/partials/filter_forms.html' %}

and include the mixin into the catalogue views.

# apps/catalogue/views.py
from oscar.apps.catalogue import views
from oscar_pg_search.mixins import SearchViewMixin


class CatalogueView(SearchViewMixin, views.CatalogueView):
    pass


class ProductCategoryView(SearchViewMixin, views.ProductCategoryView):
    pass

Optional Use Chosen.js

To empower multiple choice fields with chosen load it eg. in 'oscar/base.html'.

# At the beginning:
{% load oscar_pg_search %}

# After jQuery is loaded:
{% oscar_pg_search_base %}

Settings

If you want to add some fields that are directly attached to the Product model:

# settings.py
OSCAR_ATTACHED_PRODUCT_FIELDS = ['is_public', 'deposit', 'volume', 'weight',]