def get_for_objects(self, queryset):
"""
Get log entries for the objects in the specified queryset.
:param queryset: The queryset to get the log entries for.
:type queryset: QuerySet
:return: The LogAction objects for the objects in the given queryset.
:rtype: QuerySet
"""
if not isinstance(queryset, QuerySet) or queryset.count() == 0:
return self.none()
content_type = ContentType.objects.get_for_model(queryset.model)
primary_keys = queryset.values_list(queryset.model._meta.pk.name, flat=True)
if isinstance(primary_keys[0], integer_types):
return self.filter(content_type=content_type).filter(Q(object_id__in=primary_keys)).distinct()
else:
return self.filter(content_type=content_type).filter(Q(object_pk__in=primary_keys)).distinct()
python类integer_types()的实例源码
def __delitem__(self, index):
"Delete the item(s) at the specified index/slice."
if not isinstance(index, six.integer_types + (slice,)):
raise TypeError("%s is not a legal index" % index)
# calculate new length and dimensions
origLen = len(self)
if isinstance(index, six.integer_types):
index = self._checkindex(index)
indexRange = [index]
else:
indexRange = range(*index.indices(origLen))
newLen = origLen - len(indexRange)
newItems = (self._get_single_internal(i)
for i in range(origLen)
if i not in indexRange)
self._rebuild(newLen, newItems)
def _check_max_length_attribute(self, **kwargs):
if self.max_length is None:
return [
checks.Error(
"CharFields must define a 'max_length' attribute.",
hint=None,
obj=self,
id='fields.E120',
)
]
elif not isinstance(self.max_length, six.integer_types) or self.max_length <= 0:
return [
checks.Error(
"'max_length' must be a positive integer.",
hint=None,
obj=self,
id='fields.E121',
)
]
else:
return []
def localize(value, use_l10n=None):
"""
Checks if value is a localizable type (date, number...) and returns it
formatted as a string using current locale format.
If use_l10n is provided and is not None, that will force the value to
be localized (or not), overriding the value of settings.USE_L10N.
"""
if isinstance(value, bool):
return mark_safe(six.text_type(value))
elif isinstance(value, (decimal.Decimal, float) + six.integer_types):
return number_format(value, use_l10n=use_l10n)
elif isinstance(value, datetime.datetime):
return date_format(value, 'DATETIME_FORMAT', use_l10n=use_l10n)
elif isinstance(value, datetime.date):
return date_format(value, use_l10n=use_l10n)
elif isinstance(value, datetime.time):
return time_format(value, 'TIME_FORMAT', use_l10n=use_l10n)
else:
return value
def localize_input(value, default=None):
"""
Checks if an input value is a localizable type and returns it
formatted with the appropriate formatting string of the current locale.
"""
if isinstance(value, (decimal.Decimal, float) + six.integer_types):
return number_format(value)
elif isinstance(value, datetime.datetime):
value = datetime_safe.new_datetime(value)
format = force_str(default or get_format('DATETIME_INPUT_FORMATS')[0])
return value.strftime(format)
elif isinstance(value, datetime.date):
value = datetime_safe.new_date(value)
format = force_str(default or get_format('DATE_INPUT_FORMATS')[0])
return value.strftime(format)
elif isinstance(value, datetime.time):
format = force_str(default or get_format('TIME_INPUT_FORMATS')[0])
return value.strftime(format)
return value
def int_to_base36(i):
"""
Converts an integer to a base36 string
"""
char_set = '0123456789abcdefghijklmnopqrstuvwxyz'
if i < 0:
raise ValueError("Negative base36 conversion input.")
if six.PY2:
if not isinstance(i, six.integer_types):
raise TypeError("Non-integer base36 conversion input.")
if i > sys.maxint:
raise ValueError("Base36 conversion input too large.")
if i < 36:
return char_set[i]
b36 = ''
while i != 0:
i, n = divmod(i, 36)
b36 = char_set[n] + b36
return b36
def _set_srs(self, srs):
"Sets the SpatialReference for this geometry."
# Do not have to clone the `SpatialReference` object pointer because
# when it is assigned to this `OGRGeometry` it's internal OGR
# reference count is incremented, and will likewise be released
# (decremented) when this geometry's destructor is called.
if isinstance(srs, SpatialReference):
srs_ptr = srs.ptr
elif isinstance(srs, six.integer_types + six.string_types):
sr = SpatialReference(srs)
srs_ptr = sr.ptr
elif srs is None:
srs_ptr = None
else:
raise TypeError('Cannot assign spatial reference with object of type: %s' % type(srs))
capi.assign_srs(self.ptr, srs_ptr)
def __delitem__(self, index):
"Delete the item(s) at the specified index/slice."
if not isinstance(index, six.integer_types + (slice,)):
raise TypeError("%s is not a legal index" % index)
# calculate new length and dimensions
origLen = len(self)
if isinstance(index, six.integer_types):
index = self._checkindex(index)
indexRange = [index]
else:
indexRange = range(*index.indices(origLen))
newLen = origLen - len(indexRange)
newItems = (self._get_single_internal(i)
for i in range(origLen)
if i not in indexRange)
self._rebuild(newLen, newItems)
def display_for_value(value, empty_value_display, boolean=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if boolean:
return _boolean_icon(value)
elif value is None:
return empty_value_display
elif isinstance(value, datetime.datetime):
return formats.localize(timezone.template_localtime(value))
elif isinstance(value, (datetime.date, datetime.time)):
return formats.localize(value)
elif isinstance(value, six.integer_types + (decimal.Decimal, float)):
return formats.number_format(value)
elif isinstance(value, (list, tuple)):
return ', '.join(force_text(v) for v in value)
else:
return smart_text(value)
def _set_srs(self, srs):
"Sets the SpatialReference for this geometry."
# Do not have to clone the `SpatialReference` object pointer because
# when it is assigned to this `OGRGeometry` it's internal OGR
# reference count is incremented, and will likewise be released
# (decremented) when this geometry's destructor is called.
if isinstance(srs, SpatialReference):
srs_ptr = srs.ptr
elif isinstance(srs, six.integer_types + six.string_types):
sr = SpatialReference(srs)
srs_ptr = sr.ptr
elif srs is None:
srs_ptr = None
else:
raise TypeError('Cannot assign spatial reference with object of type: %s' % type(srs))
capi.assign_srs(self.ptr, srs_ptr)
def display_for_value(value, empty_value_display, boolean=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if boolean:
return _boolean_icon(value)
elif value is None:
return empty_value_display
elif isinstance(value, datetime.datetime):
return formats.localize(timezone.template_localtime(value))
elif isinstance(value, (datetime.date, datetime.time)):
return formats.localize(value)
elif isinstance(value, six.integer_types + (decimal.Decimal, float)):
return formats.number_format(value)
elif isinstance(value, (list, tuple)):
return ', '.join(force_text(v) for v in value)
else:
return force_text(value)
def _from_python(self, value):
"""
Converts Python values to a string for Whoosh.
Code courtesy of pysolr.
"""
if hasattr(value, 'strftime'):
if not hasattr(value, 'hour'):
value = datetime(value.year, value.month, value.day, 0, 0, 0)
elif isinstance(value, bool):
if value:
value = 'true'
else:
value = 'false'
elif isinstance(value, (list, tuple)):
value = u','.join([force_text(v) for v in value])
elif isinstance(value, (six.integer_types, float)):
# Leave it alone.
pass
else:
value = force_text(value)
return value
def _set_srs(self, srs):
"Sets the SpatialReference for this geometry."
# Do not have to clone the `SpatialReference` object pointer because
# when it is assigned to this `OGRGeometry` it's internal OGR
# reference count is incremented, and will likewise be released
# (decremented) when this geometry's destructor is called.
if isinstance(srs, SpatialReference):
srs_ptr = srs.ptr
elif isinstance(srs, six.integer_types + six.string_types):
sr = SpatialReference(srs)
srs_ptr = sr.ptr
elif srs is None:
srs_ptr = None
else:
raise TypeError('Cannot assign spatial reference with object of type: %s' % type(srs))
capi.assign_srs(self.ptr, srs_ptr)
def _set_srs(self, srs):
"Sets the SpatialReference for this geometry."
# Do not have to clone the `SpatialReference` object pointer because
# when it is assigned to this `OGRGeometry` it's internal OGR
# reference count is incremented, and will likewise be released
# (decremented) when this geometry's destructor is called.
if isinstance(srs, SpatialReference):
srs_ptr = srs.ptr
elif isinstance(srs, six.integer_types + six.string_types):
sr = SpatialReference(srs)
srs_ptr = sr.ptr
elif srs is None:
srs_ptr = None
else:
raise TypeError('Cannot assign spatial reference with object of type: %s' % type(srs))
capi.assign_srs(self.ptr, srs_ptr)
def __delitem__(self, index):
"Delete the item(s) at the specified index/slice."
if not isinstance(index, six.integer_types + (slice,)):
raise TypeError("%s is not a legal index" % index)
# calculate new length and dimensions
origLen = len(self)
if isinstance(index, six.integer_types):
index = self._checkindex(index)
indexRange = [index]
else:
indexRange = range(*index.indices(origLen))
newLen = origLen - len(indexRange)
newItems = (self._get_single_internal(i)
for i in range(origLen)
if i not in indexRange)
self._rebuild(newLen, newItems)
def display_for_value(value, empty_value_display, boolean=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
if boolean:
return _boolean_icon(value)
elif value is None:
return empty_value_display
elif isinstance(value, datetime.datetime):
return formats.localize(timezone.template_localtime(value))
elif isinstance(value, (datetime.date, datetime.time)):
return formats.localize(value)
elif isinstance(value, six.integer_types + (decimal.Decimal, float)):
return formats.number_format(value)
elif isinstance(value, (list, tuple)):
return ', '.join(force_text(v) for v in value)
else:
return smart_text(value)
def svg(self, relative=False, precision=8, **kwargs):
"""
Returns SVG representation of the geographic field in a `svg`
attribute on each element of this GeoQuerySet.
Keyword Arguments:
`relative` => If set to True, this will evaluate the path in
terms of relative moves (rather than absolute).
`precision` => May be used to set the maximum number of decimal
digits used in output (defaults to 8).
"""
relative = int(bool(relative))
if not isinstance(precision, six.integer_types):
raise TypeError('SVG precision keyword argument must be an integer.')
s = {
'desc': 'SVG',
'procedure_fmt': '%(geo_col)s,%(rel)s,%(precision)s',
'procedure_args': {
'rel': relative,
'precision': precision,
}
}
return self._spatial_attribute('svg', s, **kwargs)
def display_for_value(value, boolean=False):
from django.contrib.admin.templatetags.admin_list import _boolean_icon
from django.contrib.admin.views.main import EMPTY_CHANGELIST_VALUE
if boolean:
return _boolean_icon(value)
elif value is None:
return EMPTY_CHANGELIST_VALUE
elif isinstance(value, datetime.datetime):
return formats.localize(timezone.template_localtime(value))
elif isinstance(value, (datetime.date, datetime.time)):
return formats.localize(value)
elif isinstance(value, six.integer_types + (decimal.Decimal, float)):
return formats.number_format(value)
else:
return smart_text(value)
def __delitem__(self, index):
"Delete the item(s) at the specified index/slice."
if not isinstance(index, six.integer_types + (slice,)):
raise TypeError("%s is not a legal index" % index)
# calculate new length and dimensions
origLen = len(self)
if isinstance(index, six.integer_types):
index = self._checkindex(index)
indexRange = [index]
else:
indexRange = range(*index.indices(origLen))
newLen = origLen - len(indexRange)
newItems = (self._get_single_internal(i)
for i in range(origLen)
if i not in indexRange)
self._rebuild(newLen, newItems)
def __delitem__(self, index):
"Delete the item(s) at the specified index/slice."
if not isinstance(index, six.integer_types + (slice,)):
raise TypeError("%s is not a legal index" % index)
# calculate new length and dimensions
origLen = len(self)
if isinstance(index, six.integer_types):
index = self._checkindex(index)
indexRange = [index]
else:
indexRange = range(*index.indices(origLen))
newLen = origLen - len(indexRange)
newItems = (self._get_single_internal(i)
for i in range(origLen)
if i not in indexRange)
self._rebuild(newLen, newItems)
def svg(self, relative=False, precision=8, **kwargs):
"""
Returns SVG representation of the geographic field in a `svg`
attribute on each element of this GeoQuerySet.
Keyword Arguments:
`relative` => If set to True, this will evaluate the path in
terms of relative moves (rather than absolute).
`precision` => May be used to set the maximum number of decimal
digits used in output (defaults to 8).
"""
relative = int(bool(relative))
if not isinstance(precision, six.integer_types):
raise TypeError('SVG precision keyword argument must be an integer.')
s = {
'desc': 'SVG',
'procedure_fmt': '%(geo_col)s,%(rel)s,%(precision)s',
'procedure_args': {
'rel': relative,
'precision': precision,
}
}
return self._spatial_attribute('svg', s, **kwargs)
def __getitem__(self, idx):
# Prevent unnecessary reevaluation when accessing BoundField's attrs
# from templates.
if not isinstance(idx, six.integer_types + (slice,)):
raise TypeError
return list(self.__iter__())[idx]
def __getitem__(self, index):
if not isinstance(index, (slice,) + six.integer_types):
raise TypeError
# The object_list is converted to a list so that if it was a QuerySet
# it won't be a database hit per __getitem__.
if not isinstance(self.object_list, list):
self.object_list = list(self.object_list)
return self.object_list[index]
def get_geometry_type(self, table_name, geo_col):
cursor = self.connection.cursor()
try:
# Querying the `geometry_columns` table to get additional metadata.
type_col = 'type' if self.connection.ops.spatial_version < (4, 0, 0) else 'geometry_type'
cursor.execute('SELECT coord_dimension, srid, %s '
'FROM geometry_columns '
'WHERE f_table_name=%%s AND f_geometry_column=%%s' % type_col,
(table_name, geo_col))
row = cursor.fetchone()
if not row:
raise Exception('Could not find a geometry column for "%s"."%s"' %
(table_name, geo_col))
# OGRGeomType does not require GDAL and makes it easy to convert
# from OGC geom type name to Django field.
ogr_type = row[2]
if isinstance(ogr_type, six.integer_types) and ogr_type > 1000:
# Spatialite versions >= 4 use the new SFSQL 1.2 offsets
# 1000 (Z), 2000 (M), and 3000 (ZM) to indicate the presence of
# higher dimensional coordinates (M not yet supported by Django).
ogr_type = ogr_type % 1000 + OGRGeomType.wkb25bit
field_type = OGRGeomType(ogr_type).django
# Getting any GeometryField keyword arguments that are not the default.
dim = row[0]
srid = row[1]
field_params = {}
if srid != 4326:
field_params['srid'] = srid
if (isinstance(dim, six.string_types) and 'Z' in dim) or dim == 3:
field_params['dim'] = 3
finally:
cursor.close()
return field_type, field_params
def geojson(self, precision=8, crs=False, bbox=False, **kwargs):
"""
Returns a GeoJSON representation of the geometry field in a `geojson`
attribute on each element of the GeoQuerySet.
The `crs` and `bbox` keywords may be set to True if the user wants
the coordinate reference system and the bounding box to be included
in the GeoJSON representation of the geometry.
"""
backend = connections[self.db].ops
if not backend.geojson:
raise NotImplementedError('Only PostGIS 1.3.4+ and SpatiaLite 3.0+ '
'support GeoJSON serialization.')
if not isinstance(precision, six.integer_types):
raise TypeError('Precision keyword must be set with an integer.')
options = 0
if crs and bbox:
options = 3
elif bbox:
options = 1
elif crs:
options = 2
s = {'desc': 'GeoJSON',
'procedure_args': {'precision': precision, 'options': options},
'procedure_fmt': '%(geo_col)s,%(precision)s,%(options)s',
}
return self._spatial_attribute('geojson', s, **kwargs)
def snap_to_grid(self, *args, **kwargs):
"""
Snap all points of the input geometry to the grid. How the
geometry is snapped to the grid depends on how many arguments
were given:
- 1 argument : A single size to snap both the X and Y grids to.
- 2 arguments: X and Y sizes to snap the grid to.
- 4 arguments: X, Y sizes and the X, Y origins.
"""
if False in [isinstance(arg, (float,) + six.integer_types) for arg in args]:
raise TypeError('Size argument(s) for the grid must be a float or integer values.')
nargs = len(args)
if nargs == 1:
size = args[0]
procedure_fmt = '%(geo_col)s,%(size)s'
procedure_args = {'size': size}
elif nargs == 2:
xsize, ysize = args
procedure_fmt = '%(geo_col)s,%(xsize)s,%(ysize)s'
procedure_args = {'xsize': xsize, 'ysize': ysize}
elif nargs == 4:
xsize, ysize, xorigin, yorigin = args
procedure_fmt = '%(geo_col)s,%(xorigin)s,%(yorigin)s,%(xsize)s,%(ysize)s'
procedure_args = {'xsize': xsize, 'ysize': ysize,
'xorigin': xorigin, 'yorigin': yorigin}
else:
raise ValueError('Must provide 1, 2, or 4 arguments to `snap_to_grid`.')
s = {'procedure_fmt': procedure_fmt,
'procedure_args': procedure_args,
'select_field': GeomField(),
}
return self._spatial_attribute('snap_to_grid', s, **kwargs)
def transform(self, srid=4326, **kwargs):
"""
Transforms the given geometry field to the given SRID. If no SRID is
provided, the transformation will default to using 4326 (WGS84).
"""
if not isinstance(srid, six.integer_types):
raise TypeError('An integer SRID must be provided.')
field_name = kwargs.get('field_name')
self._spatial_setup('transform', field_name=field_name)
self.query.add_context('transformed_srid', srid)
return self._clone()
def __init__(self, expression, bbox=False, crs=False, precision=8, **extra):
expressions = [expression]
if precision is not None:
expressions.append(self._handle_param(precision, 'precision', six.integer_types))
options = 0
if crs and bbox:
options = 3
elif bbox:
options = 1
elif crs:
options = 2
if options:
expressions.append(options)
super(AsGeoJSON, self).__init__(*expressions, **extra)
def __init__(self, expression, version=2, precision=8, **extra):
expressions = [version, expression]
if precision is not None:
expressions.append(self._handle_param(precision, 'precision', six.integer_types))
super(AsGML, self).__init__(*expressions, **extra)
def __init__(self, expression, relative=False, precision=8, **extra):
relative = relative if hasattr(relative, 'resolve_expression') else int(relative)
expressions = [
expression,
relative,
self._handle_param(precision, 'precision', six.integer_types),
]
super(AsSVG, self).__init__(*expressions, **extra)
