#15615: filterspec feature
----------------------------------+---------------------------
Reporter: duzy84@… | Owner: nobody
Status: new | Milestone: 1.3
Component: django.contrib.admin | Version: 1.2
Keywords: filter | Triage Stage: Unreviewed
Has patch: 0 |
----------------------------------+---------------------------
== Filter customization ==
The lack of filter customization in django admin documentation gives me
the reason to write some sample. The filters are made on
'''DateTimeFiled''' and distinguish objects by '''month''' and '''year'''.
However each filter applied on one field works - applying them both is not
familiar to me and I have no clue how to do this. One workaround is to
make a fake field which is the copy of reference filed and apply the next
filter on the fake, but for sure there is more elegant solution e.g
changing GET request. The code suffers from lack of unit testing.
{{{#!python
#app/filters.py
from django.db import models
from django.contrib.admin.filterspecs import FilterSpec,
DateFieldFilterSpec
from django.utils.translation import ugettext as _
import datetime
class MonthFilterSpec(DateFieldFilterSpec):
def __init__(self, f, request, params, model, model_admin):
super(MonthFilterSpec, self).__init__(f, request, params, model,
model_admin)
self.field_generic = '%s__' % self.field.name
self.parsed_params = dict([(k, v) for k, v in params.items() if
k.startswith(self.field_generic)])
self.values = [int(v) for k, v in self.parsed_params.iteritems()]
self.links = (
(_('Any month'), {}),
(_('January'), {'%s__month' % self.field.name: 1, }),
(_('February'), {'%s__month' % self.field.name: 2, }),
(_('March'), {'%s__month' % self.field.name: 3, }),
(_('April'), {'%s__month' % self.field.name: 4, }),
(_('May'), {'%s__month' % self.field.name: 5, }),
(_('June'), {'%s__month' % self.field.name: 6, }),
(_('July'), {'%s__month' % self.field.name: 7, }),
(_('August'), {'%s__month' % self.field.name: 8, }),
(_('September'), {'%s__month' % self.field.name: 9, }),
(_('October'), {'%s__month' % self.field.name: 10, }),
(_('November'), {'%s__month' % self.field.name: 11, }),
(_('December'), {'%s__month' % self.field.name: 12, }),
)
def title(self):
return _("Month")
def choices(self, cl):
for title, param_dict in self.links:
yield {'selected': param_dict.get('%s__month'%self.field.name, '')
in self.values or param_dict==self.parsed_params,
'query_string': cl.get_query_string(param_dict,
[self.field.name]),
'display': title}
class YearFilterSpec(DateFieldFilterSpec):
def __init__(self, f, request, params, model, model_admin):
super(YearFilterSpec, self).__init__(f, request, params, model,
model_admin)
year = int(datetime.date.today().year)
self.field_generic = '%s__' % self.field.name
self.parsed_params = dict([(k, v) for k, v in params.items() if
k.startswith(self.field_generic)])
self.values = [str(v) for k, v in self.parsed_params.items()]
self.links = (
(_('Any year'), {}),
(_('%s'%str(year-1)), {'%s__year' % self.field.name: year-1, }),
(_('%s'%str(year)), {'%s__year' % self.field.name: year, }),
(_('%s'%str(year+1)), {'%s__year' % self.field.name: year+1, }),
)
def title(self):
return _("Year")
def choices(self, cl):
for title, param_dict in self.links:
yield {'selected': title in self.values or
param_dict==self.parsed_params,
'query_string': cl.get_query_string(param_dict,
[self.field.name]),
'display': title}
FilterSpec.filter_specs.insert(0, (lambda f: getattr(f, 'year_filter',
False), YearFilterSpec))
FilterSpec.filter_specs.insert(0, (lambda f: getattr(f, 'month_filter',
False), MonthFilterSpec))
#app/models.py
start = models.DateField(_('start'), unique_for_date=True)
start.month_filter = True
start.year_filter = True
#app/admin.py
from app.filters import MonthFilterSpec, YearFilterSpec
list_filter = ('start', )
}}}
--
Ticket URL: <http://code.djangoproject.com/ticket/15615>
Django <http://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To post to this group, send email to django-updates@googlegroups.com.
To unsubscribe from this group, send email to
django-updates+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/django-updates?hl=en.
