Metadata-Version: 2.1
Name: django-model-values
Version: 0.6
Summary: Taking the O out of ORM.
Home-page: https://bitbucket.org/coady/django-model-values
Author: Aric Coady
Author-email: aric.coady@gmail.com
License: Apache Software License
Description: [![image](https://img.shields.io/pypi/v/django-model-values.svg)](https://pypi.org/project/django-model-values/)
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        [![image](https://img.shields.io/codecov/c/github/coady/django-model-values.svg)](https://codecov.io/github/coady/django-model-values)
        [![image](https://readthedocs.org/projects/django-model-values/badge)](https://django-model-values.readthedocs.io)
        
        [Django](https://docs.djangoproject.com) model utilities for encouraging
        direct data access instead of unnecessary object overhead. Implemented
        through compatible method and operator extensions to `QuerySets` and
        `Managers`.
        
        The goal is to provide elegant syntactic support for best practices in
        using Django's ORM. Specifically avoiding the inefficiencies and race
        conditions associated with always using objects.
        
        # Usage
        
        Typical model usage is verbose, inefficient, and incorrect.
        
        ```python
        book = Book.objects.get(pk=pk)
        book.rating = 5.0
        book.save()
        ```
        
        The correct method is generally supported, but arguably less readable.
        
        ```python
        Book.objects.filter(pk=pk).update(rating=5.0)
        ```
        
        `model_values` encourages the better approach with operator support.
        
        ```python
        Book.objects[pk]['rating'] = 5.0
        ```
        
        Similarly for queries:
        
        ```python
        (book.rating for book in books)
        books.values_list('rating', flat=True)
        books['rating']
        ```
        
        Column-oriented syntax is common in panel data layers, and the greater
        expressiveness cascades. `QuerySets` also support aggregation and
        conditionals.
        
        ```python
        books.values_list('rating', flat=True).filter(rating__gt=0)
        books['rating'] > 0
        
        books.aggregate(models.Avg('rating'))['rating__avg']
        books['rating'].mean()
        ```
        
        `Managers` provide a variety of efficient primary key based utilities.
        To enable, instantiate the `Manager` in your models. As with any custom
        `Manager`, it doesn't have to be named `objects`, but it is designed to
        be a 100% compatible replacement.
        
        ```python
        from model_values import Manager
        
        class Book(models.Model):
            ...
            objects = Manager()
        ```
        
        `F` expressions are also enhanced, and can be used directly without
        model changes.
        
        ```python
        from model_values import F
        
        .filter(rating__gt=0, last_modified__range=(start, end))
        .filter(F.rating > 0, F.last_modified.range(start, end))
        ```
        
        Read the [documentation](https://django-model-values.readthedocs.io).
        
        # Installation
        
            $ pip install django-model-values
        
        # Dependencies
        * django >=1.11
        
        # Tests
        100% branch coverage.
        
            $ pytest [--cov]
        
        # Changes
        0.6
        * Transform functions
        * Named tuples
        * Window functions
        * Distance lookups
        * Django 2.1 functions
        * `EnumField`
        * Annotated `items`
        * Expressions in column selection
        
        0.5
        * `F` expressions operators `any` and `all`
        * Spatial lookups and functions
        * Django 2.0 support
        
        0.4
        * `upsert` method
        * Django 1.9 database functions
        * `bulk_update` supports additional fields
        
        0.3
        * Lookup methods and operators
        * `F` expressions and aggregation methods
        * Database functions
        * Conditional expressions for updates and annotations
        * Bulk updates and change detection
        
        0.2
        * Change detection
        * Groupby functionality
        * Named tuples
        
Keywords: values_list pandas column-oriented data mapper pattern orm
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Framework :: Django :: 1.11
Classifier: Framework :: Django :: 2.0
Classifier: Framework :: Django :: 2.1
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Topic :: Database :: Database Engines/Servers
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=2.7
Description-Content-Type: text/markdown
