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added two optional params to autosort tag default_sort_field & default_sort_dir #13

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added two optional params to autosort tag default_sort_field & default_sort_dir #13

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41 changes: 28 additions & 13 deletions django_sorting/templatetags/sorting_tags.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,16 +48,20 @@ def __init__(self, field, title):
def render(self, context):
request = context['request']
getvars = request.GET.copy()
if 'sort' in getvars:
sortby = getvars['sort']
del getvars['sort']
if context.has_key('default_sort_field'):
sortby = context['default_sort_field']
sortdir = context['default_sort_dir']
else:
sortby = ''
if 'dir' in getvars:
sortdir = getvars['dir']
del getvars['dir']
else:
sortdir = ''
if 'sort' in getvars:
sortby = getvars['sort']
del getvars['sort']
else:
sortby = ''
if 'dir' in getvars:
sortdir = getvars['dir']
del getvars['dir']
else:
sortdir = ''
if sortby == self.field:
getvars['dir'] = sort_directions[sortdir]['inverse']
icon = sort_directions[sortdir]['icon']
Expand All @@ -78,22 +82,33 @@ def render(self, context):

def autosort(parser, token):
bits = [b.strip('"\'') for b in token.split_contents()]
if len(bits) != 2:
raise TemplateSyntaxError, "autosort tag takes exactly one argument"
return SortedDataNode(bits[1])
if len(bits) == 1:
raise TemplateSyntaxError, "autosort tag takes at least one argument"
kwargs = dict()
if len(bits) > 2:
kwargs['default_sort_field'] = bits[2]
if len(bits) > 3:
kwargs['default_sort_dir'] = bits[3]
return SortedDataNode(bits[1], **kwargs)

class SortedDataNode(template.Node):
"""
Automatically sort a queryset with {% autosort queryset %}
"""
def __init__(self, queryset_var, context_var=None):
def __init__(self, queryset_var, default_sort_field=None, default_sort_dir='desc', context_var=None):
self.queryset_var = template.Variable(queryset_var)
self.default_sort_field = default_sort_field
self.default_sort_dir = default_sort_dir
self.context_var = context_var

def render(self, context):
key = self.queryset_var.var
value = self.queryset_var.resolve(context)
order_by = context['request'].field
if len(order_by) == 1 and self.default_sort_field:
context['default_sort_field'] = self.default_sort_field
context['default_sort_dir'] = self.default_sort_dir
order_by = (self.default_sort_dir == 'desc' and '-' or '') + self.default_sort_field
if len(order_by) > 1:
try:
context[key] = value.order_by(order_by)
Expand Down