mirror of
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103 lines
3.7 KiB
Python
103 lines
3.7 KiB
Python
"""
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Provides compatibility with Django 1.1
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Copied from django.contrib.admin.util
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"""
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from django.db import models
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from django.utils.encoding import force_unicode, smart_unicode, smart_str
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def lookup_field(name, obj, model_admin=None):
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opts = obj._meta
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try:
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f = opts.get_field(name)
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except models.FieldDoesNotExist:
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# For non-field values, the value is either a method, property or
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# returned via a callable.
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if callable(name):
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attr = name
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value = attr(obj)
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elif (model_admin is not None and hasattr(model_admin, name) and
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not name == '__str__' and not name == '__unicode__'):
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attr = getattr(model_admin, name)
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value = attr(obj)
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else:
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attr = getattr(obj, name)
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if callable(attr):
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value = attr()
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else:
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value = attr
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f = None
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else:
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attr = None
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value = getattr(obj, name)
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return f, attr, value
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def label_for_field(name, model, model_admin=None, return_attr=False):
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"""
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Returns a sensible label for a field name. The name can be a callable or the
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name of an object attributes, as well as a genuine fields. If return_attr is
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True, the resolved attribute (which could be a callable) is also returned.
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This will be None if (and only if) the name refers to a field.
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"""
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attr = None
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try:
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field = model._meta.get_field_by_name(name)[0]
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if isinstance(field, RelatedObject):
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label = field.opts.verbose_name
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else:
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label = field.verbose_name
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except models.FieldDoesNotExist:
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if name == "__unicode__":
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label = force_unicode(model._meta.verbose_name)
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attr = unicode
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elif name == "__str__":
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label = smart_str(model._meta.verbose_name)
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attr = str
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else:
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if callable(name):
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attr = name
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elif model_admin is not None and hasattr(model_admin, name):
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attr = getattr(model_admin, name)
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elif hasattr(model, name):
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attr = getattr(model, name)
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else:
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message = "Unable to lookup '%s' on %s" % (name, model._meta.object_name)
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if model_admin:
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message += " or %s" % (model_admin.__class__.__name__,)
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raise AttributeError(message)
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if hasattr(attr, "short_description"):
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label = attr.short_description
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elif callable(attr):
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if attr.__name__ == "<lambda>":
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label = "--"
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else:
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label = pretty_name(attr.__name__)
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else:
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label = pretty_name(name)
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if return_attr:
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return (label, attr)
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else:
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return label
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def display_for_field(value, field):
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from django.contrib.admin.templatetags.admin_list import _boolean_icon
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from django.contrib.admin.views.main import EMPTY_CHANGELIST_VALUE
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if field.flatchoices:
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return dict(field.flatchoices).get(value, EMPTY_CHANGELIST_VALUE)
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# NullBooleanField needs special-case null-handling, so it comes
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# before the general null test.
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elif isinstance(field, models.BooleanField) or isinstance(field, models.NullBooleanField):
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return _boolean_icon(value)
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elif value is None:
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return EMPTY_CHANGELIST_VALUE
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elif isinstance(field, models.DateField) or isinstance(field, models.TimeField):
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return formats.localize(value)
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elif isinstance(field, models.DecimalField):
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return formats.number_format(value, field.decimal_places)
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elif isinstance(field, models.FloatField):
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return formats.number_format(value)
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else:
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return smart_unicode(value)
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