def validate_input(self, value):
"""
Validates if the given value is a valid input for the NumerField.
Checks if a value of type number has been provided or if a value of
type String has been provided that can be successfully converted to a
Float value. Then checks if the value is between bounds of minval and
maxval.
Parameters
----------
value : str
The value to be validated
Notes
-----
Raises InputError if an invalid value is provided
"""
if isinstance(value, (str, unicode)) and len(value) == 0:
value = None
self.validate_required(value)
if value is not None:
if isinstance(value, (str, unicode)):
try:
value = float(value) if '.' in value else int(value)
except ValueError:
raise InputError(
'The value provided for field %s is not a number.' %
self.name)
if isinstance(value, (int, long, float, complex)):
if self.minval and self.maxval and (not (value >= self.minval)
and
(value <= self.maxval)):
raise InputError('The value provided for field %s must be '
' greater than %s and lower than %s.' %
(self.name, self.minval, self.maxval))
else:
if self.minval and (not (value >= self.minval)):
raise InputError('The value provided for field %s must'
' be greater than %s.' %
(self.name, self.minval))
if self.maxval and (not (value <= self.maxval)):
raise InputError('The value provided for field %s must'
' be lower than %s.' %
(self.name, self.maxval))
def get_by_bbox(self, bbox):
"""
Returns a subset of the queryset containing observations where the
geometry of the location is inside the the passed bbox.
Parameters
----------
bbox : str
Str that provides the xmin,ymin,xmax,ymax
Return
------
django.db.models.Queryset
List of search results matching the query
"""
if bbox:
try:
# created bbox to Polygon
from django.contrib.gis.geos import Polygon
bbox = bbox.split(',') # Split by ','
geom_bbox = Polygon.from_bbox(bbox)
# Filtering observations where
return self.filter(location__geometry__bboverlaps=geom_bbox)
except Exception as e:
raise InputError(
str(e) + '. Please, check the coordinates'
' you attached to bbox parameters, they should follow'
'the OSGeo standards (e.g:bbox=xmin,ymin,xmax,ymax).')
def validate_input(self, provided_vals):
"""
Checks if the provided value matches the ID of one of the field's
lookupvalues.
Parameters
----------
value : int
The value to be validated
Notes
-----
Raises InputError if an invalid value is provided
"""
self.validate_required(provided_vals)
valid = True
if provided_vals is not None:
if isinstance(provided_vals, (str, unicode)):
provided_vals = json.loads(provided_vals)
accepted_values = [value.id for value in self.lookupvalues.all()]
intersection = [
val for val in provided_vals if val in accepted_values
]
valid = len(intersection) == len(provided_vals)
if not valid:
raise InputError('One or more values for the multiple select '
'field %s is not an accepted value for the '
'field.' % self.name)
def validate_input(self, value):
"""
Checks if the provided value matches the ID of one of the field's
lookupvalues.
Parameters
----------
value : int
The value to be validated
Notes
-----
Raises InputError if an invalid value is provided
"""
self.validate_required(value)
valid = False
if value is not None:
try:
value = int(value)
for lookupvalue in self.lookupvalues.all():
if lookupvalue.id == value:
valid = True
except ValueError:
pass
else:
valid = True
if not valid:
raise InputError('The value for lookup field %s is not an '
'accepted value for the field.' % self.name)
def validate_required(self, value):
"""
Validates input value against required status.
Raises an `InputError` if no value has been provided.
"""
if self.status == STATUS.active and self.required and (value is None):
raise InputError('The field %s is required.' % self.name)
def validate_required(self, value):
"""
Validate the given value agaist required status. Checks if value is
not None and has at least one character.
Parameters
----------
value : str or None
The value to be validated
Notes
-----
Raises InputError if no value is provided
"""
if (self.status == STATUS.active and self.required
and (value is None or len(value) == 0)):
raise InputError('The field %s is required.' % self.name)
def validate_input(self, value):
"""
Checks if the provided value is a matches the patterns HH:mm
Parameters
----------
value : str
The value to be validated
Notes
-----
Raises InputError if an invalid value is provided
"""
self.validate_required(value)
if value is not None:
try:
time.strptime(value, '%H:%M')
except ValueError:
raise InputError('The value for TimeField %s is not a '
'valid time.' % self.name)
def validate_input(self, value):
"""
Validates if the given value is a valid input for the TextField.
Checks if the value is required and if maxlength constraint is met.
Parameters
----------
value : str
The value to be validated
Notes
-----
Raises InputError if an invalid value is provided
"""
self.validate_required(value)
if value is not None:
if self.maxlength is not None and len(value) > self.maxlength:
raise InputError('The input provided for text field %s '
'contains too many characters.' % self.name)
def validate_required(self, value):
"""
Validate the given value agaist required status. Checks if value is
not None and has at least one character.
Parameters
----------
value : str
The value to be validated
Notes
-----
Raises InputError if no value is provided
"""
if isinstance(value, str) or isinstance(value, unicode):
value = value.encode('utf-8')
if self.status == STATUS.active and self.required and (
value is None or len(str(value)) == 0):
raise InputError('The field %s is required.' % self.name)
def validate_input(self, value):
"""
Checks if the provided value is a valid and ISO8601 compliant date
string.
Parameters
----------
value : str
The value to be validated
Notes
-----
Raises InputError if an invalid value is provided
"""
self.validate_required(value)
if value is not None:
try:
parse_date(value)
except ParseError:
raise InputError('The value for DateField %s is not a '
'valid date.' % self.name)
