Field.error_messages The error_messages argument lets you override the default messages that the field will raise. Pass in a dictionary with keys matching the error messages you want to override. Error message keys include null, blank, invalid, invalid_choice, unique, and unique_for_date. Additional error message keys are specified for each field in the Field types section below.

FieldFile.delete(save=True) [source] Deletes the file associated with this instance and clears all attributes on the field. Note: This method will close the file if it happens to be open when delete() is called. The optional save argument controls whether or not the model instance is saved after the file associated with this field has been deleted. Defaults to True. Note that when a model is deleted, related files are not deleted. If you need to cleanup orphaned files, you’ll need to handle

FieldFile.open(mode='rb') [source] Opens or reopens the file associated with this instance in the specified mode. Unlike the standard Python open() method, it doesn’t return a file descriptor. Since the underlying file is opened implicitly when accessing it, it may be unnecessary to call this method except to reset the pointer to the underlying file or to change the mode.

get_success_url() Determine the URL to redirect to when the form is successfully validated. Returns django.views.generic.edit.ModelFormMixin.success_url if it is provided; otherwise, attempts to use the get_absolute_url() of the object.

AppConfig.name Full Python path to the application, e.g. 'django.contrib.admin'. This attribute defines which application the configuration applies to. It must be set in all AppConfig subclasses. It must be unique across a Django project.

bilateral A boolean indicating whether this transformation should apply to both lhs and rhs. Bilateral transformations will be applied to rhs in the same order as they appear in the lookup expression. By default it is set to False. For example usage, see Custom Lookups.

Field.disabled New in Django 1.9. The disabled boolean argument, when set to True, disables a form field using the disabled HTML attribute so that it won’t be editable by users. Even if a user tampers with the field’s value submitted to the server, it will be ignored in favor of the value from the form’s initial data.

unpack_ipv4 Unpacks IPv4 mapped addresses like ::ffff:192.0.2.1. If this option is enabled that address would be unpacked to 192.0.2.1. Default is disabled. Can only be used when protocol is set to 'both'.

months An optional dict of months to use in the “months” select box. The keys of the dict correspond to the month number (1-indexed) and the values are the displayed months: MONTHS = { 1:_('jan'), 2:_('feb'), 3:_('mar'), 4:_('apr'), 5:_('may'), 6:_('jun'), 7:_('jul'), 8:_('aug'), 9:_('sep'), 10:_('oct'), 11:_('nov'), 12:_('dec') }

BoundField.name The name of this field in the form: >>> f = ContactForm() >>> print(f['subject'].name) subject >>> print(f['message'].name) message