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django-publicmanager-0.9.2


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توضیحات

Custom managers that handle public availability of database objects.
ویژگی مقدار
سیستم عامل -
نام فایل django-publicmanager-0.9.2
نام django-publicmanager
نسخه کتابخانه 0.9.2
نگهدارنده []
ایمیل نگهدارنده []
نویسنده Gregor Müllegger
ایمیل نویسنده gregor@muellegger.de
آدرس صفحه اصلی https://github.com/gregor-muellegger/django-publicmanager
آدرس اینترنتی https://pypi.org/project/django-publicmanager/
مجوز BSD
==================== django-publicmanager ==================== The django-publicmanager application provides a custom queryset class and managers that handle the public availability of database objects. The classes provide a ``public`` method that filters by boolean ``is_public`` and date based ``pub_date`` fields. Installation ============ All you need to install the django-publicmanager package is a simple ``sudo easy_install dango-publicmanager``. Usage ===== The package contains just two managers. The manager ``GenericPublicManager`` works exactly like django's default manager except that it provides a ``public()`` method that returns only public available objects. The athor manager, ``PublicOnlyManager``, returns public objects by default without calling any extra method. It should be obvious that you will at least need a model to use one or both of these managers. The managers will use one or more of the following fields to determine if an object is public or not. * ``is_public``: This must be a ``models.BooleanField`` and if it is set to ``True``, it will be treated as public. * ``pub_date`` must be a ``models.DateTimeField`` or ``models.DateField``. The date must be either in the past or equal to the current time to make the object public. * You can use a status field which holds information about the public availability of the object. To use it you must provide the ``status_attr`` and ``status_values`` attributes to the manager. The ``status_attr`` specifies the field name. If the field's value is found in list ``status_values`` the object will be public. The most common use of this feature is to use it with choices. See the examples below. An object is only public if all of these fields, if existent in the model, are evaluated to be public. This means if ``is_public`` is set to ``True`` but ``pub_date`` points to a date in the future the whole objects will be treated as not public. Examples ======== Here is a pretty simple example using only the ``is_public`` and ``pub_date`` fields:: from django.db import models from django_publicmanager.managers import GenericPublicManager, PublicOnlyManager class Example(models.Model): title = models.CharField(max_length=50) is_public = models.BooleanField(default=True) pub_date = models.DateTimeField() objects = GenericPublicManager() public = PublicOnlyManager() Now you can access the objects like this:: >>> Example.objects.create(title='A', is_public=True, pub_date=datetime.now()) >>> Example.objects.create(title='B', is_public=True, pub_date=datetime.now() + timedelta(1)) >>> Example.objects.create(title='C', is_public=False, pub_date=datetime.now()) >>> Example.objects.create(title='D', is_public=True, pub_date=datetime.now() - timedelta(1)) >>> Example.objects.all() [<Example: A>, <Example: B>, <Example: C>, <Example: D>] >>> Example.objects.public() [<Example: A>, <Example: D>] >>> Example.public.all() [<Example: A>, <Example: D>] >>> Example.objects.public() [<Example: A>, <Example: D>] >>> Example.objects.filter(title='A').public() [<Example: A>] You don't have to name the fields exactly like above. But if you use athor names, you have to tell the managers the new names:: from django.db import models from django_publicmanager.managers import GenericPublicManager, PublicOnlyManager class Example(models.Model): title = models.CharField(max_length=50) online = models.BooleanField(default=True) available_from = models.DateTimeField() objects = GenericPublicManager( is_public_attr='online', pub_date_attr='available_from') public = PublicOnlyManager( is_public_attr='online', pub_date_attr='available_from') Last but not least, an example with the ``status`` field:: from django.db import models from django_publicmanager.managers import GenericPublicManager, PublicOnlyManager class Example(models.Model): STATUS_CHOICES = ( (1, 'draft'), (2, 'review'), (3, 'public'), (4, 'featured'), ) title = models.CharField(max_length=50) status = models.PositiveIntegerField(choices=STATUS_CHOICES) objects = GenericPublicManager( status_attr='status', status_values=(3,4)) public = PublicOnlyManager( status_attr='status', status_values=(3,4)) ========= Changelog ========= 0.3.0 - 2009-12-30 ================== * First release on the python package index. 0.9.1 - 2010-02-04 ================== * Adding support for django current trunk which will be 1.2 0.9.2 - 2010-02-04 ================== * Fixing bug with clones of ``PublicQuerySet``. It didn't filter for public attributes.


نحوه نصب


نصب پکیج whl django-publicmanager-0.9.2:

    pip install django-publicmanager-0.9.2.whl


نصب پکیج tar.gz django-publicmanager-0.9.2:

    pip install django-publicmanager-0.9.2.tar.gz