Wrote a quick custom template tag to do previous/next products. Might
be useful to someone else.
Use like this:
{% prev_next_products for product as products with 6 others %}
It'll give you a structure that looks like:
products.previous # if there's a product before this one, this will
equal that product, otherwise, it's set to None
products.next # if there's a product after this one, this will equal
that product, otherwise, it's set to None
products.products # array of the next products, based on how many
"others" you told it to grab
Code:
---------------------------------------------------------------------------------------------
import os, logging
from django import template
from django.template import Library, Node, Variable
from django.contrib.sites.models import Site
from satchmo.product.models import Product, ProductManager
log = logging.getLogger('hssproduct.models')
register = template.Library()
class ProductOrderNode(Node):
def __init__(self, product, included_count, varname):
self.product = Variable(product)
self.included = included_count
self.varname = varname
def render(self, context, **kwargs):
masterlist = []
returned = {}
previous, next, found, last = None, None, None, None
self.product = self.product.resolve(context)
site = Site.objects.get_current()
productlist = Product.objects.filter(active=True,
productvariation__parent__isnull=True)
for product in productlist:
if product != self.product:
masterlist.append(product)
if found and not next:
next = product
if (len(masterlist) > self.included) and not found:
masterlist.pop(0)
elif (len(masterlist) >= self.included) and found:
break
if not found:
if product == self.product:
found = product
previous = last
last = product
if previous:
returned['previous'] = previous
if next:
returned['next'] = next
if len(masterlist):
returned['products'] = masterlist
log.debug('%s' % masterlist)
context[self.varname] = returned
return ''
#prev_next_product for product as variable with num others
@register.tag
def prev_next_products(parser, token):
try:
tag_name, for_string, product, as_string, varname, with_string,
included_count, others_string = token.split_contents()
except:
raise template.TemplateSyntaxError, 'prev_next_product should be
formatted like: prev_next_product for product as variable with num
others'
return ProductOrderNode(product, included_count, varname)
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