django.db.models.fields.FloatField

class documentation

class FloatField(Field):

Known subclasses: django.contrib.gis.db.models.sql.AreaField, django.contrib.gis.db.models.sql.DistanceField

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Undocumented

Method formfield Return a django.forms.Field instance for this field.
Method get​_internal​_type Undocumented
Method get​_prep​_value Perform preliminary non-db specific value checks and conversions.
Method to​_python Convert the input value into the expected Python data type, raising django.core.exceptions.ValidationError if the data can't be converted. Return the converted value. Subclasses should override this.
Class Variable default​_error​_messages Undocumented
Class Variable description Undocumented
Class Variable empty​_strings​_allowed Undocumented

Inherited from Field:

Class Method ​_choices​_is​_value Undocumented
Method __copy__ Undocumented
Method __deepcopy__ Undocumented
Method __eq__ Undocumented
Method __hash__ Undocumented
Method __init__ Undocumented
Method __lt__ Undocumented
Method __reduce__ Pickling should return the model._meta.fields instance of the field, not a new copy of that field. So, use the app registry to load the model and then the field back.
Method __repr__ Display the module, class, and name of the field.
Method __str__ Return "app_label.model_label.field_name" for fields attached to models.
Method ​_check​_backend​_specific​_checks Undocumented
Method ​_check​_choices Undocumented
Method ​_check​_db​_index Undocumented
Method ​_check​_deprecation​_details Undocumented
Method ​_check​_field​_name Check if field name is valid, i.e. 1) does not end with an underscore, 2) does not contain "__" and 3) is not "pk".
Method ​_check​_null​_allowed​_for​_primary​_keys Undocumented
Method ​_check​_validators Undocumented
Method ​_description Undocumented
Method ​_get​_flatchoices Flattened version of choices tuple.
Method cast​_db​_type Return the data type to use in the Cast() function.
Method check Undocumented
Method clean Convert the value's type and run validation. Validation errors from to_python() and validate() are propagated. Return the correct value if no error is raised.
Method clone Uses deconstruct() to clone a new copy of this Field. Will not preserve any class attachments/attribute names.
Method contribute​_to​_class Register the field with the model class it belongs to.
Method db​_check Return the database column check constraint for this field, for the provided connection. Works the same way as db_type() for the case that get_internal_type() does not map to a preexisting model field.
Method db​_parameters Extension of db_type(), providing a range of different return values (type, checks). This will look at db_type(), allowing custom model fields to override it.
Method db​_type Return the database column data type for this field, for the provided connection.
Method db​_type​_parameters Undocumented
Method db​_type​_suffix Undocumented
Method deconstruct Return enough information to recreate the field as a 4-tuple:
Method get​_attname Undocumented
Method get​_attname​_column Undocumented
Method get​_choices Return choices with a default blank choices included, for use as <select> choices for this field.
Method get​_col Undocumented
Method get​_db​_converters Undocumented
Method get​_db​_prep​_save Return field's value prepared for saving into a database.
Method get​_db​_prep​_value Return field's value prepared for interacting with the database backend.
Method get​_default Return the default value for this field.
Method get​_filter​_kwargs​_for​_object Return a dict that when passed as kwargs to self.model.filter(), would yield all instances having the same value for this field as obj has.
Method get​_pk​_value​_on​_save No summary
Method has​_default Return a boolean of whether this field has a default value.
Method pre​_save Return field's value just before saving.
Method rel​_db​_type Return the data type that a related field pointing to this field should use. For example, this method is called by ForeignKey and OneToOneField to determine its data type.
Method run​_validators Undocumented
Method save​_form​_data Undocumented
Method select​_format Custom format for select clauses. For example, GIS columns need to be selected as AsText(table.col) on MySQL as the table.col data can't be used by Django.
Method set​_attributes​_from​_name Undocumented
Method validate Validate value and raise ValidationError if necessary. Subclasses should override this to provide validation logic.
Method value​_from​_object Return the value of this field in the given model instance.
Method value​_to​_string Return a string value of this field from the passed obj. This is used by the serialization framework.
Class Variable auto​_creation​_counter Undocumented
Class Variable default​_validators Undocumented
Class Variable empty​_values Undocumented
Class Variable flatchoices Undocumented
Class Variable hidden Undocumented
Class Variable many​_to​_many Undocumented
Class Variable many​_to​_one Undocumented
Class Variable one​_to​_many Undocumented
Class Variable one​_to​_one Undocumented
Class Variable related​_model Undocumented
Class Variable system​_check​_deprecated​_details Undocumented
Class Variable system​_check​_removed​_details Undocumented
Instance Variable ​_db​_tablespace Undocumented
Instance Variable ​_error​_messages Undocumented
Instance Variable ​_unique Undocumented
Instance Variable ​_validators Undocumented
Instance Variable ​_verbose​_name Undocumented
Instance Variable attname Undocumented
Instance Variable auto​_created Undocumented
Instance Variable blank Undocumented
Instance Variable choices Undocumented
Instance Variable column Undocumented
Instance Variable concrete Undocumented
Instance Variable creation​_counter Undocumented
Instance Variable db​_column Undocumented
Instance Variable db​_index Undocumented
Instance Variable default Undocumented
Instance Variable editable Undocumented
Instance Variable error​_messages Undocumented
Instance Variable help​_text Undocumented
Instance Variable is​_relation Undocumented
Instance Variable max​_length Undocumented
Instance Variable model Undocumented
Instance Variable name Undocumented
Instance Variable null Undocumented
Instance Variable primary​_key Undocumented
Instance Variable remote​_field Undocumented
Instance Variable serialize Undocumented
Instance Variable unique​_for​_date Undocumented
Instance Variable unique​_for​_month Undocumented
Instance Variable unique​_for​_year Undocumented
Instance Variable verbose​_name Undocumented
Property ​_get​_default Undocumented
Property cached​_col Undocumented
Property db​_returning Private API intended only to be used by Django itself. Currently only the PostgreSQL backend supports returning multiple fields on a model.
Property db​_tablespace Undocumented
Property unique Undocumented
Property validators Some validators can't be created at field initialization time. This method provides a way to delay their creation until required.

Inherited from RegisterLookupMixin (via Field):

Class Method get​_lookups Undocumented
Class Method register​_lookup Undocumented
Static Method merge​_dicts Merge dicts in reverse to preference the order of the original list. e.g., merge_dicts([a, b]) will preference the keys in 'a' over those in 'b'.
Class Method ​_clear​_cached​_lookups Undocumented
Class Method ​_get​_lookup Undocumented
Class Method ​_unregister​_lookup Remove given lookup from cls lookups. For use in tests only as it's not thread-safe.
Method get​_lookup Undocumented
Method get​_transform Undocumented
def formfield(self, **kwargs):
overrides django.db.models.fields.Field.formfield
Return a django.forms.Field instance for this field.
def get_internal_type(self):
overrides django.db.models.fields.Field.get_internal_type
overridden in django.contrib.gis.db.models.sql.AreaField, django.contrib.gis.db.models.sql.DistanceField

Undocumented

def get_prep_value(self, value):
overrides django.db.models.fields.Field.get_prep_value
overridden in django.contrib.gis.db.models.sql.AreaField, django.contrib.gis.db.models.sql.DistanceField
Perform preliminary non-db specific value checks and conversions.
def to_python(self, value):
overrides django.db.models.fields.Field.to_python
Convert the input value into the expected Python data type, raising django.core.exceptions.ValidationError if the data can't be converted. Return the converted value. Subclasses should override this.
default_error_messages =
overrides django.db.models.fields.Field.default_error_messages

Undocumented

description =
overrides django.db.models.fields.Field.description

Undocumented

empty_strings_allowed: bool =
overrides django.db.models.fields.Field.empty_strings_allowed

Undocumented