Traceback (most recent call last):
    File "/home/appuser/.local/lib/python3.8/site-packages/django/core/handlers/exception.py", line 55, in inner
    response = get_response(request)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/contrib/admin/options.py", line 688, in wrapper
    return this.admin_site.admin_view(view)(*args, **kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/utils/decorators.py", line 134, in _wrapper_view
    response = view_func(request, *args, **kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/views/decorators/cache.py", line 62, in _wrapper_view_func
    response = view_func(request, *args, **kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/contrib/admin/sites.py", line 242, in inner
    return view(request, *args, **kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1886, in add_view
    return this.changeform_view(request, None, form_url, extra_context)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/utils/decorators.py", line 46, in _wrapper
    return bound_method(*args, **kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/utils/decorators.py", line 134, in _wrapper_view
    response = view_func(request, *args, **kwargs)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1747, in changeform_view
    return this._changeform_view(request, object_id, form_url, extra_context)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1792, in _changeform_view
    form_validated = form.is_valid()
    File "/home/appuser/.local/lib/python3.8/site-packages/django/forms/forms.py", line 201, in is_valid
    return this.is_bound and not this.errors
    File "/home/appuser/.local/lib/python3.8/site-packages/django/forms/forms.py", line 196, in errors
    this.full_clean()
    File "/home/appuser/.local/lib/python3.8/site-packages/django/forms/forms.py", line 435, in full_clean
    this._post_clean()
    File "/home/appuser/.local/lib/python3.8/site-packages/django/forms/models.py", line 486, in _post_clean
    this.instance.full_clean(exclude=exclude, validate_unique=False)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/db/models/base.py", line 1470, in full_clean
    this.clean_fields(exclude=exclude)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/db/models/base.py", line 1522, in clean_fields
    setattr(this, f.attname, f.clean(raw_value, this))
    File "/home/appuser/.local/lib/python3.8/site-packages/django/db/models/fields/__init__.py", line 777, in clean
    this.validate(value, model_instance)
    File "/home/appuser/.local/lib/python3.8/site-packages/django/db/models/fields/__init__.py", line 767, in validate
    if not this.blank and value in this.empty_values:
Exception Type: ValueError at /admin/api/model_with_vector/add/
Exception Value: 具有多个元素的数组的真值是模糊的。使用 a.any() 或 a.all()

# widgets.py
from django import forms
class VectorWidget(forms.TextInput):
    def format_value(self, value):
        try:
            value = value.tolist()
        except AttributeError:
            # value could be None
            pass
        return super().format_value(value)

# forms.py
from django import forms
class VectorFormField(forms.CharField):
    widget = VectorWidget

# fields.py
from django.db import models
from pgvector.django import VectorField
class CustomVectorField(_VectorField):
    def validate(self, value, model_instance):
        super().validate(value.tolist(), model_instance)
    def run_validators(self, value):
        super().run_validators(value.tolist())
    def formfield(self, **kwargs):
        return super().formfield(form_class=VectorFormField, **kwargs)

# models.py
class Vector(models.Model):
    test = CustomVectorField(dimensions=3)
    def __str__(self):
        return str(self.test)

当使用内置的验证方法无效时，您可以在模型的 `save` 方法中添加验证，例如：
**models.py**
```python
from django.core.exceptions import ValidationError
class MyModel(...):
    array_field = models.ArrayField(...)
    ...
    def save(self, *args, **kwargs):
    
        # 抛出错误并且不保存：
        # 检查数组，在本例中只是检查它是否为空：
        if not self.array_field:
            raise ValidationError(
                "the `array_field` 不能为空",
                ...,
            )
        super().save(*args, **kwargs)

<details>
<summary>英文:</summary>
When using the built-in validation methods doesn&#39;t work, you can instead add validation in the `save` method of the model, for example:
**models.py**
```python
from django.core.exceptions import ValidationError
class MyModel(...):
    array_field = models.ArrayField(...)
    ...
    def save(self, *args, **kwargs):
    
        # raise an error and do not save:
        # check the array, in this example just checking if it is empty:
        if not self.array_field:
            raise ValidationError(
                &quot;the `array_field` cannot be empty&quot;,
                ...,
            )
        super().save(*args, **kwargs)