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verbose_name – Django Built-in Field Validation

  • Difficulty Level : Basic
  • Last Updated : 13 Feb, 2020

Built-in Field Validations in Django models are the validations that come predefined to all Django fields. Every field comes in with built-in validations from Django validators. One can also add more built-in field validations for applying or removing certain constraints on a particular field. verbose_name is a human-readable name for the field. If the verbose name isn’t given, Django will automatically create it using the field’s attribute name, converting underscores to spaces. This attribute in general changes the field name in admin interface.

Syntax –

field_name = models.Field(verbose_name = "name")

Django Built-in Field Validation verbose_name Explanation

Illustration of verbose_name using an Example. Consider a project named geeksforgeeks having an app named geeks.

Refer to the following articles to check how to create a project and an app in Django.

Enter the following code into models.py file of geeks app. We will be using CharField for experimenting for all field options.






from django.db import models
from django.db.models import Model
# Create your models here.
  
class GeeksModel(Model):
    geeks_field = models.CharField(
                    max_length = 200,  
                    )

After running makemigrations and migrate on Django and rendering the above model, let us check the display name for geeks_field.

django-verbose_name-
Now let us modify this using verbose_name attribute. change models.py to




from django.db import models
from django.db.models import Model
# Create your models here.
  
class GeeksModel(Model):
    geeks_field = models.CharField(
                    max_length = 200,  
                    verbose_name = "Geeksforgeeks"
                    )

Since models.py is modified run makemigrations and migrate again on the project. Open admin interface and check the name of that field again, it is changes to “Geeksforgeeks”.

You can see the modified image. Therefore, verbose_name modifies the field name.

More Built-in Field Validations

Field OptionsDescription
NullIf True, Django will store empty values as NULL in the database. Default is False.
BlankIf True, the field is allowed to be blank. Default is False.
db_columnThe name of the database column to use for this field. If this isn’t given, Django will use the field’s name.
DefaultThe default value for the field. This can be a value or a callable object. If callable it will be called every time a new object is created.
help_textExtra “help” text to be displayed with the form widget. It’s useful for documentation even if your field isn’t used on a form.
primary_keyIf True, this field is the primary key for the model.
editableIf False, the field will not be displayed in the admin or any other ModelForm. They are also skipped during model validation. Default is True.
error_messagesThe 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.
help_textExtra “help” text to be displayed with the form widget. It’s useful for documentation even if your field isn’t used on a form.
verbose_nameA human-readable name for the field. If the verbose name isn’t given, Django will automatically create it using the field’s attribute name, converting underscores to spaces.
validatorsA list of validators to run for this field. See the validators documentation for more information.
UniqueIf True, this field must be unique throughout the table.

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