django-orchestra/orchestra/admin/utils.py

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from functools import update_wrapper
from django.conf import settings
from django.contrib import admin
from django.core.urlresolvers import reverse
from django.db import models
from django.utils import importlib
from django.utils.html import escape
from django.utils.safestring import mark_safe
from django.utils.translation import ugettext_lazy as _
from orchestra.models.utils import get_field_value
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from orchestra.utils.humanize import naturaldate
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from .decorators import admin_field
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def get_modeladmin(model, import_module=True):
""" returns the modeladmin registred for model """
for k,v in admin.site._registry.iteritems():
if k is model:
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return v
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if import_module:
# Sometimes the admin module is not yet imported
app_label = model._meta.app_label
for app in settings.INSTALLED_APPS:
if app.endswith(app_label):
app_label = app
importlib.import_module('%s.%s' % (app_label, 'admin'))
return get_modeladmin(model, import_module=False)
def insertattr(model, name, value, weight=0):
""" Inserts attribute to a modeladmin """
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modeladmin = model
if models.Model in model.__mro__:
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modeladmin = type(get_modeladmin(model))
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# Avoid inlines defined on parent class be shared between subclasses
# Seems that if we use tuples they are lost in some conditions like changing
# the tuple in modeladmin.__init__
if not getattr(modeladmin, name):
setattr(type(modeladmin), name, [])
inserted_attrs = getattr(modeladmin, '__inserted_attrs__', {})
if not name in inserted_attrs:
weights = {}
if hasattr(modeladmin, 'weights') and name in modeladmin.weights:
weights = modeladmin.weights.get(name)
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inserted_attrs[name] = [
(attr, weights.get(attr, 0)) for attr in getattr(modeladmin, name)
]
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inserted_attrs[name].append((value, weight))
inserted_attrs[name].sort(key=lambda a: a[1])
setattr(modeladmin, name, [ attr[0] for attr in inserted_attrs[name] ])
setattr(modeladmin, '__inserted_attrs__', inserted_attrs)
def wrap_admin_view(modeladmin, view):
""" Add admin authentication to view """
def wrapper(*args, **kwargs):
return modeladmin.admin_site.admin_view(view)(*args, **kwargs)
return update_wrapper(wrapper, view)
def set_default_filter(queryarg, request, value):
""" set default filters for changelist_view """
if queryarg not in request.GET:
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request_copy = request.GET.copy()
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if callable(value):
value = value(request)
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request_copy[queryarg] = value
request.GET = request_copy
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request.META['QUERY_STRING'] = request.GET.urlencode()
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@admin_field
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def admin_link(*args, **kwargs):
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instance = args[-1]
obj = get_field_value(instance, kwargs['field'])
if not getattr(obj, 'pk', None):
return '---'
opts = obj._meta
view_name = 'admin:%s_%s_change' % (opts.app_label, opts.model_name)
url = reverse(view_name, args=(obj.pk,))
extra = ''
if kwargs['popup']:
extra = 'onclick="return showAddAnotherPopup(this);"'
return '<a href="%s" %s>%s</a>' % (url, extra, obj)
@admin_field
def admin_colored(*args, **kwargs):
instance = args[-1]
field = kwargs['field']
value = escape(get_field_value(instance, field))
color = kwargs.get('colors', {}).get(value, 'black')
value = getattr(instance, 'get_%s_display' % field)().upper()
colored_value = '<span style="color: %s;">%s</span>' % (color, value)
if kwargs.get('bold', True):
colored_value = '<b>%s</b>' % colored_value
return mark_safe(colored_value)
@admin_field
def admin_date(*args, **kwargs):
instance = args[-1]
value = get_field_value(instance, kwargs['field'])
if not value:
return kwargs.get('default', '')
return '<span title="{0}">{1}</span>'.format(
escape(str(value)), escape(naturaldate(value)),
)