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kiddouk committed Sep 9, 2012
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115 changes: 112 additions & 3 deletions models.rst
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You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive.
Containers
Object Relation Manager
===================================

A suite of containers is available to the developer (you!) in order to manipulate some of redis' objects. You can easily create, modify, update, and delete Sets, SortedSets, Lists and Hashes. Pay attention that mnay of the operations are serialized to the redis server and are therefore time consuming.
Redisco allows you to store objects in Redis_. Redisco can easily manage object creation, update and deletion. It is strongly Ohm_ and Django_ ORM and try to provide a simple approach.

.. _Redis: http://redis.io
.. _Ohm: http://ohm.keyvalue.org
.. _Django: http://djangoproject.org

::

>>> from redisco import models
>>> class Person(models.Model):
... name = models.Attribute(required=True)
... created_at = models.DateTimeField(auto_now_add=True)
... fave_colors = models.ListField(str)

>>> person = Person(name="Conchita")
>>> person.is_valid()
True
>>> person.save()
True
>>> conchita = Person.objects.filter(name='Conchita')[0]
>>> conchita.name
'Conchita'
>>> conchita.created_at
datetime.datetime(2010, 5, 24, 16, 0, 31, 954704)



Model
-----------------------------------
The ``Model`` class is the class that will contain your object. It upports many different type of attributes and support custom object validation to ensure data integrity when saving.

.. autoclass:: redisco.models.Model
:members:


Attributes
----------------------------------
The attributes are the core of any redisco ``Model``. Many different attributes are available according to your needs. Read the following documentation to understand the caveats of each attribute.


Attribute
Stores unicode strings. If used for large bodies of text,
turn indexing of this field off by setting indexed=True.

IntegerField
Stores an int. Ints are stringified using unicode() before saving to
Redis.

Counter
An IntegerField that can only be accessed via Model.incr and Model.decr.

DateTimeField
Can store a DateTime object. Saved in the Redis store as a float.

DateField
Can store a Date object. Saved in Redis as a float.

FloatField
Can store floats.

BooleanField
Can store bools. Saved in Redis as 1's and 0's.

ReferenceField
Can reference other redisco model.

ListField
Can store a list of unicode, int, float, as well as other redisco models.


Attribute Options
-----------------

required
If True, the attirbute cannot be None or empty. Strings are stripped to
check if they are empty. Default is False.

default
Sets the default value of the attribute. Default is None.

indexed
If True, redisco will create index entries for the attribute. Indexes
are used in filtering and ordering results of queries. For large bodies
of strings, this should be set to False. Default is True.

validator
Set this to a callable that accepts two arguments -- the field name and
the value of the attribute. The callable should return a list of tuples
with the first item is the field name, and the second item is the error.

unique
The field must be unique. Default is False.

DateField and DateTimeField Options

auto_now_add
Automatically set the datetime/date field to now/today when the object
is first created. Default is False.

auto_now
Automatically set the datetime/date field to now/today everytime the object
is saved. Default is False.

Modelset
-----------------------------------
The ``ModelSet`` class is useful for all kind of queries when you want to filter data (like in SQL). You can filter objects by values in their attributes, creation dates and even perform some unions and exclusions.


>>> from redisco import models
>>> class Person(models.Model):
... name = models.Attribute(required=True)
... created_at = models.DateTimeField(auto_now_add=True)
... fave_colors = models.ListField(str)

>>> person = Person(name="Conchita")
>>> person.save()
True
>>> conchita = Person.objects.filter(name='Conchita').first()

.. autoclass:: redisco.models.modelset.ModelSet
:members:
:members: get_by_id, filter, first, exclude, all, get_or_create, order, limit

9 changes: 4 additions & 5 deletions redisco/containers.py
Expand Up @@ -49,10 +49,10 @@ def set_expire(self, time=None):
>>> s.add("1")
1
>>> s.set_expire(1)
>>> from time import sleep
>>> sleep(1)
>>> s.members
set([])
>>> # from time import sleep
>>> # sleep(1)
>>> # s.members
# set([])
:param time: time expressed in seconds. If time is not specified, then ``default_expire_time`` will be used.
Expand Down Expand Up @@ -1123,7 +1123,6 @@ def zrank(self, elem):
"""
return self.db.zrank(self.key, elem)


def eq(self, value):
"""
Returns the elements that have ``value`` for score.
Expand Down

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