With these models, you can use your Django's database directly as backend for PowerDNS server (tested with MySQL). License: GNU GPL. More info: http://downloads.powerdns.com/documentation/html/configuring-db-connection.html#CONFIGURING-MYSQL
This is standart phone model.
This code provides a primary key field that is globally unique. It uses the pre_save method to auto-populate the field with a Universal Unique Id as the record is saved the first time.
Base models aren't aware of its inherited models, here is a quick solution to access child models from the base model.
Django provides a `get_or_create` helper method in the `models.Manager` class which looks up an object for the given `kwargs`, creating one if necessary. But sometime you need a method which updates the object with given `kwargs` or creates it if it's not found. This snippet provides the helper for that purpose. Use the snippet like this: from django.db import models class PersonManager(models.Manager): update_or_create = _update_or_create class Person(models.Model): first_name = models.CharField() last_name = models.CharField() city = models.CharField() objects = PersonManager() person, created, updated = Person.objects.update_or_create(first_name="John", last_name="Smith", defaults=dict(city="London")) The method returns a tuple of (`object`, `created`, `updated`), where `created` and `updated` are booleans specifying whether an `object` was created or updated respectively. Both `created` and `updated` are `false` if `object` is neither created nor updated (that is `object` has just been fetched "as is" from db). This happens if the update fails.
This is a general JQuery Autocomplete Form Field for selecting any model instance in your forms. 1 Download jquery.1.2.6 and the jquery autocomplete plugin http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/, place theme somewhere in your media directory (in this case {{ MEDIA__URL}}/js/ 2 copy fields.py to anywhere in your python-path (in this case utils.fields) 3 create a view for the ajax request that receives a query and returns a key|value list, and register it in your urls.py 4 Just Use the fields in any form like in forms.py
Sometimes you need to prevent concurrent access to update/calculate some properties right. Here is (MySQL) specific example to lock one table with new object manager functions.
An abstract model base class that gives your models a random base-32 string ID. This can be useful in many ways. Requires a Django version recent enough to support model inheritance.
Django supports the serializing model objects, but does not support the serializing Q object like that, ============================ q = Q(username__contains="findme") model0.objects.filter(q) serialize(q) # X ============================ so I wrote a little marshaller for Q, this is example, ============================ from django.contrib.auth import models as django_models qs = django_query.Q(username__contains="spike") | django_query.Q(email__contains="spike") _m = QMarshaller() a = _m.dumps(qs) # a was serialized. When call the similiar queries in page by page, you don't need to write additional code for creating same Q(s) for filtering models, just use the serialized Q as http querystring and in the next page unserialize and apply it. That is simple life.
Based on the UPDATE query section of `Model.save()`, this is another means of limiting the fields which are used in an UPDATE statement and bypassing the check for object existence which is made when you use `Model.save()`. Just make whatever changes you want to your model instance and call `update`, passing your instance and the names of any fields to be updated. Usage example: import datetime from forum.models import Topic from forum.utils.models import update topic = Topic.objects.get(pk=1) topic.post_count += 1 topic.last_post_at = datetime.datetime.now() update(topic, 'post_count', 'last_post_at') (Originally intended as a comment on [Snippet 479](/snippets/479/), but comments aren't working for me)
A CompressedTextField to transparently save data gzipped in the database and uncompress at retrieval. Full description at my blog: [arnebrodowski.de/...Field-for-Django.html](http://www.arnebrodowski.de/blog/435-Implementing-a-CompressedTextField-for-Django.html)
Add fields and extend Django's built-in `Group` model using a `OneToOneField` (i.e. a profile model). In this example, we add a `UUIDField`. Whenever a new group is created, we automatically (via signals) create a corresponding `Role` record referencing the newly created group. Whenever a Group is deleted, the corresponding Role is deleted as well.
Get all field data, e.g. for an export.
This snippet *updates* http://www.djangosnippets.org/snippets/383/ and http://www.djangosnippets.org/snippets/1495/ for Django 1.4+, and adds support for sqlite3 and south. Original snippet text: A CompressedTextField to transparently save data gzipped in the database and uncompress at retrieval.
This class decorator will help you when you want to keep a unique boolean (think a 'default' field which should only be only one set to true in a group). The interesting thing with this, is that it's possible to assign a subset of fields to be used, so that the uniqueness of the field will be guaranteed among only the subset (look at the Example section in the code to understand this behaviour). This is a better and improved way of doing http://djangosnippets.org/snippets/2676/