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django-permissionedforms-0.1
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مشاهده بیشترتوضیحات
Django extension for creating forms that vary according to user permissions
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | django-permissionedforms-0.1 |
| نام | django-permissionedforms |
| نسخه کتابخانه | 0.1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Matthew Westcott |
| ایمیل نویسنده | matthew.westcott@torchbox.com |
| آدرس صفحه اصلی | https://github.com/wagtail/django-permissionedforms |
| آدرس اینترنتی | https://pypi.org/project/django-permissionedforms/ |
| مجوز | BSD |
django-permissionedforms
========================
`django-permissionedforms` is an extension to Django's forms framework, allowing you to define forms where certain fields are shown or omitted according to the user's permissions.
Installation
------------
Run: `pip install django-permissionedforms`
Usage
-----
To add permission rules to a basic Django form, subclass `permissionedforms.PermissionedForm` in place of `django.forms.Form` and add an inner `Meta` class:
```python
from permissionedforms import PermissionedForm
class PersonForm(PermissionedForm):
first_name = forms.CharField()
last_name = forms.CharField()
class Meta:
field_permissions = {
'last_name': 'myapp.change_last_name'
}
```
`field_permissions` is a dict, mapping field names to permission codenames. For each field listed, that field will only be included in the final form if the user has the specified permission, as defined by the `user.has_perm()` method. See Django's documentation on [custom permissions](https://docs.djangoproject.com/en/stable/topics/auth/customizing/#custom-permissions) and [programmatically creating permissions](https://docs.djangoproject.com/en/4.0/topics/auth/default/#programmatically-creating-permissions) for details on how to set permissions up; alternatively, if you want to set a field as only available to superusers, you can use any arbitrary string (such as `'superuser'`) as the codename, since `has_perm` always returns True for them.
Then, when instantiating the form, pass the keyword argument `for_user`:
```python
form = PersonForm(for_user=request.user)
```
This will result in a form where the `last_name` field is only present if the logged-in user has the `change_last_name` permission.
The keyword argument `for_user` is optional, and if not passed, the form will behave as an ordinary form with all named fields available.
For a ModelForm, the procedure is the same, except that you should inherit from `permissionedforms.PermissionedModelForm` instead. `field_permissions` is added alongside the existing `Meta` options:
```python
from permissionedforms import PermissionedModelForm
class CountryForm(PermissionedModelForm):
class Meta:
model = Country
fields = ['name', 'description']
field_permissions = {
'description': 'tests.change_country_description'
}
form = CountryForm(instance=country, for_user=request.user)
```
Integrating with other base form classes
----------------------------------------
You may wish to integrate the permission handling from `django-permissionedforms` into some other base form class, such as `ClusterForm` from the [django-modelcluster](https://github.com/wagtail/django-modelcluster) package. If that base form class is a straightforward subclass of `django.forms.Form` or `django.forms.ModelForm`, then using multiple inheritance to additionally inherit from `PermissionedForm` or `PermissionedModelForm` should work:
```python
from fancyforms import FancyForm # made up for example purposes
from permissionedforms import PermissionedForm
class FancyPermissionedForm(PermissionedForm, FancyForm):
pass
```
However, this will fail if the base form class implements its own metaclass. In this case, you will need to define a new metaclass inheriting from both the existing one and `permissionedforms.PermissionedFormMetaclass`:
```python
from fancyforms import FancyForm
from permissionedforms import PermissionedForm, PermissionedFormMetaclass
FancyFormMetaclass = type(FancyForm)
class FancyPermissionedFormMetaclass(PermissionedFormMetaclass, FancyFormMetaclass):
pass
class FancyPermissionedForm(PermissionedForm, FancyForm, metaclass=FancyPermissionedFormMetaclass):
pass
```
This could still fail if the base form class incorporates a custom Options class to allow it to accept its own `class Meta` options. If so, it will be necessary to define a new Options class, again using multiple inheritance to subclass both the existing Options class and `permissionedforms.PermissionedFormOptionsMixin`, and then set this as `options_class` on the metaclass. The following recipe will work for `ClusterForm`:
```python
from modelcluster.forms import ClusterForm, ClusterFormMetaclass, ClusterFormOptions
from permissionedforms import PermissionedForm, PermissionedFormMetaclass, PermissionedFormOptionsMixin
class PermissionedClusterFormOptions(PermissionedFormOptionsMixin, ClusterFormOptions):
pass
class PermissionedClusterFormMetaclass(PermissionedFormMetaclass, ClusterFormMetaclass):
options_class = PermissionedClusterFormOptions
class PermissionedClusterForm(PermissionedForm, ClusterForm, metaclass=PermissionedClusterFormMetaclass):
pass
```
Acknowledgements
----------------
`django-permissionedforms` was developed as part of [Wagtail](https://wagtail.org/)'s next-generation page editor, sponsored by Google.
نیازمندی
| مقدار | نام |
|---|---|
| - | Django |
| - | django-modelcluster |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.7 | Python |
نحوه نصب
نصب پکیج whl django-permissionedforms-0.1:
pip install django-permissionedforms-0.1.whl
نصب پکیج tar.gz django-permissionedforms-0.1:
pip install django-permissionedforms-0.1.tar.gz