Reference Validators

The django.core.validators module contains a collection of callable validators for use with model and form fields. They’re used internally but are available for use with your own fields, too.

Reference Form fields Built-in Field classes

- Validates that file data has been bound to the form. Also uses FileExtensionValidator to validate that the file extension is supported by Pillow. - Error message keys: required, invalid, missing, empty, invalid_image

Reference Model field reference Field types

classURLField(max_length=200,**options)[source] A CharField for a URL, validated by URLValidator. The default form widget for this field is a URLInput. Like all CharField subclasses, URLField takes the optional max_length argument. If you don’t specify max_length, a default of 200 is used.

Reference Model field reference Field types

It uses MinValueValidator and MaxValueValidator to validate the input based on the values that the default database supports. The default form widget for this field is a NumberInput when localize is False or TextInput otherwise.

Reference Model field reference Field types

… you’d use: And to store numbers up to approximately one billion with a resolution of 10 decimal places: The default form widget for this field is a NumberInput when localize is False or TextInput otherwise. NOTE: For more information about …

Index

… (RelatedManager method) - add_action() (AdminSite method) - add_arguments() (BaseCommand method) - (DiscoverRunner class method) - add_constraint() (BaseDatabaseSchemaEditor method) - add_error() (Form method) - add_field() (BaseDatabaseSchemaEditor method) - add_form_template (ModelAdmin attribute) - add_index() (BaseDatabaseSchemaEditor method) - add_item() (SyndicationFeed method) - add_item_elements() …

Index

… - template tag - ifchanged - template tag - IGNORABLE_404_URLS - setting - ImageField (class in django.db.models) - (class in django.forms) - ImageFile (class in django.core.files.images) - ImmediateBackend (class in django.tasks.backends.immediate) - import_epsg() (SpatialReference method) - import_proj() (SpatialReference method) - …

Topic guide Testing tools The test client

Serialization is performed with [`DjangoJSONEncoder`](../serialization.md#django.core.serializers.json.DjangoJSONEncoder) by default, and can be overridden by providing a `json_encoder` argument to [`Client`](#django.test.Client). This serialization also happens for [`put()`](#django.test.Client.put), [`patch()`](#django.test.Client.patch), and [`delete()`](#django.test.Client.delete) requests. If you provide any other `content_type` (e.g.

Index

… (models.User method) - EmailAlternative (class in django.core.mail) - EmailAttachment (class in django.core.mail) - EmailField (class in django.db.models) - (class in django.forms) - EmailInput (class in django.forms) - EmailMessage (class in django.core.mail) - EmailMultiAlternatives (class in django.core.mail) - EmailValidator (class in …

Index

… | | --- | --- | | - Radians (class in django.db.models.functions) - radio_fields (ModelAdmin attribute) - RadioSelect (class in django.forms) - raise_exception (AccessMixin attribute) - random - template filter - Random (class in django.db.models.functions) - RandomUUID (class in django.contrib.postgres.functions) …

Index

… (File method) - (LayerMapping method) - (Model method) - (Storage method) - save_as (ModelAdmin attribute) - save_as_continue (ModelAdmin attribute) - save_formset() (ModelAdmin method) - save_model() (ModelAdmin method) - save_on_top (ModelAdmin attribute) - save_related() (ModelAdmin method) - savepoint() (in module django.db.transaction) …

Index

… fid (Feature attribute) - field - (BoundField attribute) - Field (class in django.contrib.gis.gdal) - (class in django.db.models) - (class in django.forms) - field (ModelChoiceIterator attribute) - field lookup type - arrayfield.contained_by - arrayfield.contains - arrayfield.index - arrayfield.len - arrayfield.overlap - …

Reference Form fields Built-in Field classes

classEmailField(**kwargs)[source] : - Default widget: EmailInput - Empty value: Whatever you’ve given as empty_value. - Normalizes to: A string. - Uses EmailValidator to validate that the given value is a valid email address, using a moderately complex regular expression.

Reference Form fields Built-in Field classes

classSlugField(**kwargs)[source] : - Default widget: TextInput - Empty value: Whatever you’ve given as empty_value. - Normalizes to: A string. - Uses validate_slug or validate_unicode_slug to validate that the given value contains only letters, numbers, underscores, and hyphens.

Reference Form fields Built-in Field classes

classURLField(**kwargs)[source] : - Default widget: URLInput - Empty value: Whatever you’ve given as empty_value. - Normalizes to: A string. - Uses URLValidator to validate that the given value is a valid URL. - Error message keys: required, invalid

Reference Form fields Built-in Field classes

classDecimalField(**kwargs)[source] : - Default widget: NumberInput when Field.localize is False, else TextInput. - Empty value: None - Normalizes to: A Python decimal. - Validates that the given value is a decimal.

Reference Form fields Built-in Field classes

classFloatField(**kwargs)[source] : - Default widget: NumberInput when Field.localize is False, else TextInput. - Empty value: None - Normalizes to: A Python float. - Validates that the given value is a float.

Reference PostgreSQL specific form fields and widgets Fields

classHStoreField : A field which accepts JSON encoded data for an HStoreField. It casts all values (except nulls) to strings. It is represented by an HTML <textarea>.

Release notes Django 2.0 release notes What’s new in Django 2.0Minor features

The new ProhibitNullCharactersValidator disallows the null character in the input of the CharField form field and its subclasses. Null character input was observed from vulnerability scanning tools.

Release notes Django 4.1 release notes What’s new in Django 4.1Minor features

The new StepValueValidator checks if a value is an integral multiple of a given step size. This new validator is used for the new step_size argument added to form fields representing numeric values.