def get_link_context(self, context, obj, fieldname, admin_site, querystring):
"""
Adds a `link` and `verbose_name` to the context, if
:meth:`~adminlinks.templatetags.adminlinks_buttons.BaseAdminLink.is_valid`
:param context: Hopefully, a :class:`~django.template.RequestContext`
otherwise :meth:`~adminlinks.templatetags.adminlinks_buttons.BaseAdminLink.is_valid`
is unlikely to be :data:`True`
:param obj: the :class:`~django.db.models.Model` instance to link to.
Must have a primary key, and
:class:`~django.db.models.Options` from which we can
retrieve a :attr:`~django.db.models.Field.verbose_name`
:param fieldname: the specific model field to render a link for.
:param admin_site: name of the admin site to use; defaults to **"admin"**
:param querystring: a querystring to include in the link output.
Defaults to "_popup=1"
:return: the link values.
:rtype: dictionary.
"""
ctx = {}
ctx.update(_add_custom_link_to_context(admin_site, context['request'],
obj._meta, 'change',
'change_field',
[obj.pk, fieldname],
query=querystring))
# successfully loaded link, add the fieldname.
if 'link' in ctx:
field = obj._meta.get_field(fieldname)
value = getattr(obj, fieldname, None)
if field.get_internal_type() in ('BooleanField', 'NullBooleanField'):
icon = 'admin/img/icon-%s.gif' % yesno(value, "yes,no,unknown")
ctx.update(maybe_boolean=True, img=icon)
ctx.update(verbose_name=field.verbose_name,
existing_value=value)
return ctx
def get_link_context(self, context, obj, admin_site, querystring):
"""
Adds a `link` and `verbose_name` to the context, if
:meth:`~adminlinks.templatetags.adminlinks_buttons.BaseAdminLink.is_valid`
:param context: Hopefully, a :class:`~django.template.RequestContext`
otherwise :meth:`~adminlinks.templatetags.adminlinks_buttons.BaseAdminLink.is_valid`
is unlikely to be :data:`True`
:param obj: the :class:`~django.db.models.Model` class to link to.
Must have :class:`~django.db.models.Options`
from which we can retrieve a
:attr:`~django.db.models.Field.verbose_name`
:param admin_site: name of the admin site to use; defaults to **"admin"**
:param querystring: a querystring to include in the link output.
Defaults to "pop=1" unless Django > 1.6, when it
changes to "_popup=1"
:return: the link values.
:rtype: dictionary.
"""
ctx = _add_custom_link_to_context(admin_site, context['request'],
opts=obj._meta, permname='change',
viewname='changelist', url_params=None,
query=querystring)
if ctx['link']:
logger.debug('link created successfully, swapping out the '
'`verbose_name` available to the context')
ctx['verbose_name'] = obj._meta.verbose_name_plural
return ctx
def get_link_context(self, context, obj, admin_site, querystring):
"""
..todo:: document
Always returns the existing context.
"""
site = get_admin_site(admin_site)
if site is None:
logger.debug('Invalid admin site')
return {}
content_type = get_content_type(obj)
new_querystring = QueryDict(querystring, mutable=True)
new_querystring.update({'content_type': content_type.pk,
'content_id': obj.pk})
link = _add_custom_link_to_context(admin_site, context['request'],
opts=EditRegionChunk._meta,
permname='change',
viewname='changelist',
url_params=None,
query=new_querystring.urlencode())
if link['verbose_name']:
logger.debug('link created successfully, swapping out the '
'`verbose_name` available to the context')
link['verbose_name'] = EditRegionChunk._meta.verbose_name_plural
link['obj_name'] = obj._meta.verbose_name
return link