verbose_name – Django 内置字段验证

Django 模型中的内置字段验证是为所有 Django 字段预定义的验证。每个字段都带有来自 Django 验证器的内置验证。还可以添加更多内置字段验证，以在特定字段上应用或删除某些约束。 verbose_name是该字段的人类可读名称。如果没有给出详细名称，Django 将使用字段的属性名称自动创建它，将下划线转换为空格。此属性通常会更改管理界面中的字段名称。

句法 -

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

Django内置字段验证verbose_name解释

使用示例说明verbose_name 。考虑一个名为geeks的项目，它有一个名为geeksforgeeks的应用程序。

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

• How to Create a Basic Project using MVT in Django?
• How to Create an App in Django ?

在极客应用的models.py文件中输入以下代码。我们将使用 CharField 来试验所有字段选项。

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,  
                    )

在 Django 上运行makemigrations和 migrate 并渲染上述模型后，让我们检查geeks_field的显示名称。

现在让我们使用verbose_name属性来修改它。将models.py更改为

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"
                    )

由于 models.py 已修改运行 makemigrations 并在项目上再次迁移。打开管理界面并再次检查该字段的名称，它已更改为“Geeksforgeeks”。

您可以看到修改后的图像。因此， verbose_name修改了字段名称。

更多内置字段验证

Field Options	Description
Null	If True, Django will store empty values as NULL in the database. Default is False.
Blank	If True, the field is allowed to be blank. Default is False.
db_column	The name of the database column to use for this field. If this isn’t given, Django will use the field’s name.
Default	The 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_text	Extra “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_key	If True, this field is the primary key for the model.
editable	If 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_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.
help_text	Extra “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_name	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.
validators	A list of validators to run for this field. See the validators documentation for more information.
Unique	If True, this field must be unique throughout the table.