Documentation (#5)

Add a lot of missing documentation

* try codeblock

* code

* backticks

* markdown, not rst

* examples

* unindent

* stub out docs

* change theme, add docs for installation

* More documentation

* remove debug print

* flake8
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Tyrel Souza 2016-12-08 13:43:12 -05:00 committed by GitHub
parent a638ea08e9
commit 93df8c6939
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# Django-dbfilestorage
[![CircleCI](https://circleci.com/gh/tyrelsouza/django-dbfilestorage.svg?style=svg)](https://circleci.com/gh/tyrelsouza/django-dbfilestorage)
Custom file storage for Django that stores file data and content type in the database.
Easy to use for testing when you don't care about a filename, and just want to test file data.
Intended to be used in tests, never in production.
## INSTALLATION
In your project's `settings.py` file, add `'dbfilestorage'` to your `INSTALLED_APPS`:
```python
INSTALLED_APPS = (
...
'dbfilestorage'
)
```
Next, if you want to set this globally, set the setting:
```python
DEFAULT_FILE_STORAGE='dbfilestorage.storage.DBFileStorage'
```
Or you can set it individually on a field: [Django Docs](https://docs.djangoproject.com/en/1.10/ref/models/fields/#django.db.models.FileField.storage)
```python
from dbfilestorage.storage import DBFileStorage
class SomeClass(models.Model):
file = models.FileField(upload_to=u'anywhere',
storage=DBFileStorage())
```
## TODO
- More Tests
- Test that this works on a fake model, not just the storage file.
- Different django and different python versions.
- Store original filename in a field, maybe?
- Use original filename instead, so it honors the "upload_to" parameter.
## CHANGELOG
- 2016-12-08 [Tyrel Souza] Add more documentation.
- 2016-12-07 [Tyrel Souza] Update Readme, move to github, gitlab wasn't functioning properly.
- 2016-12-07 [Tyrel Souza] Initial commits and basic project setup

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Django-dbfilestorage
--------------------
.. image:: https://circleci.com/gh/tyrelsouza/django-dbfilestorage/tree/master.svg?style=svg
:target: https://circleci.com/gh/tyrelsouza/django-dbfilestorage/tree/master
Custom file storage for Django that stores file data and content type in the database.
Easy to use for testing when you don't care about a filename, and just want to test file data.
Intended to be used in tests, never in production.
TODO
====
More Tests
Different django and different python versions.
Store original filename in a field, maybe?
Use original filename instead, so it honors the "upload_to" parameter.
CHANGELOG
=========
- 2016-12-07 [Tyrel Souza] Update Readme, move to github, gitlab wasn't functioning properly.
- 2016-12-07 [Tyrel Souza] Initial commits and basic project setup

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@ -31,9 +31,12 @@ class DBStorage(Storage):
""" """
The save method does most of the 'magic'. The save method does most of the 'magic'.
It stores the contents of the file as a base64 string. It stores the contents of the file as a base64 string.
It then takes the filename, and tries to get the mimetype from that (for rendering) It then takes the filename, and tries to get the mimetype from that
Then it takes the md5 of the read file and uses that as the "unique" key to access the file. (for rendering)
Then it checks if the file exists and if it doesn't, it will create the entry in the database. Then it takes the md5 of the read file and uses that as the "unique"
key to access the file.
Then it checks if the file exists and if it doesn't, it will create
the entry in the database.
:return str: the name(md5) to look up the file by. :return str: the name(md5) to look up the file by.
""" """

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# -*- coding: utf-8 -*- # -*- coding: utf-8 -*-
# #
# Django DBStorage documentation build configuration file, created by # Django DBFileStorage documentation build configuration file, created by
# sphinx-quickstart on Wed Dec 7 14:50:49 2016. # sphinx-quickstart on Wed Dec 7 14:50:49 2016.
# #
# This file is execfile()d with the current directory set to its # This file is execfile()d with the current directory set to its
@ -45,7 +45,7 @@ source_suffix = '.rst'
master_doc = 'index' master_doc = 'index'
# General information about the project. # General information about the project.
project = u'Django DBStorage' project = u'Django DBFileStorage'
copyright = u'2016, Tyrel Souza' copyright = u'2016, Tyrel Souza'
author = u'Tyrel Souza' author = u'Tyrel Souza'
@ -54,9 +54,9 @@ author = u'Tyrel Souza'
# built documents. # built documents.
# #
# The short X.Y version. # The short X.Y version.
version = u'0.0.1' version = u'0.0.3'
# The full version, including alpha/beta/rc tags. # The full version, including alpha/beta/rc tags.
release = u'0.0.1' release = u'0.0.3'
# The language for content autogenerated by Sphinx. Refer to documentation # The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages. # for a list of supported languages.
@ -82,7 +82,7 @@ todo_include_todos = False
# The theme to use for HTML and HTML Help pages. See the documentation for # The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes. # a list of builtin themes.
# #
html_theme = 'alabaster' html_theme = 'nature'
# Theme options are theme-specific and customize the look and feel of a theme # Theme options are theme-specific and customize the look and feel of a theme
# further. For a list of options available for each theme, see the # further. For a list of options available for each theme, see the
@ -99,7 +99,7 @@ html_static_path = ['_static']
# -- Options for HTMLHelp output ------------------------------------------ # -- Options for HTMLHelp output ------------------------------------------
# Output file base name for HTML help builder. # Output file base name for HTML help builder.
htmlhelp_basename = 'DjangoDBStoragedoc' htmlhelp_basename = 'DjangoDBFileStoragedoc'
# -- Options for LaTeX output --------------------------------------------- # -- Options for LaTeX output ---------------------------------------------
@ -126,7 +126,9 @@ latex_elements = {
# (source start file, target name, title, # (source start file, target name, title,
# author, documentclass [howto, manual, or own class]). # author, documentclass [howto, manual, or own class]).
latex_documents = [ latex_documents = [
(master_doc, 'DjangoDBStorage.tex', u'Django DBStorage Documentation', (master_doc,
'DjangoDBFileStorage.tex',
u'Django DBFileStorage Documentation',
u'Tyrel Souza', 'manual'), u'Tyrel Souza', 'manual'),
] ]
@ -136,7 +138,7 @@ latex_documents = [
# One entry per manual page. List of tuples # One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section). # (source start file, name, description, authors, manual section).
man_pages = [ man_pages = [
(master_doc, 'djangodbstorage', u'Django DBStorage Documentation', (master_doc, 'djangodbstorage', u'Django DBFileStorage Documentation',
[author], 1) [author], 1)
] ]
@ -147,10 +149,7 @@ man_pages = [
# (source start file, target name, title, author, # (source start file, target name, title, author,
# dir menu entry, description, category) # dir menu entry, description, category)
texinfo_documents = [ texinfo_documents = [
(master_doc, 'DjangoDBStorage', u'Django DBStorage Documentation', (master_doc, 'DjangoDBFileStorage', u'Django DBFileStorage Documentation',
author, 'DjangoDBStorage', 'One line description of project.', author, 'DjangoDBFileStorage', 'One line description of project.',
'Miscellaneous'), 'Miscellaneous'),
] ]

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Installation
============
In your project's `settings.py` file, add `'dbfilestorage'` to your `INSTALLED_APPS`:
.. code:: python
INSTALLED_APPS = (
...
'dbfilestorage'
)
Next, if you want to set this globally, set the setting:
.. code:: python
DEFAULT_FILE_STORAGE='dbfilestorage.storage.DBFileStorage'
Or you can set it individually on a field: `Django Docs <https://docs.djangoproject.com/en/1.10/ref/models/fields/#django.db.models.FileField.storage>`_
.. code:: python
from dbfilestorage.storage import DBFileStorage
class SomeClass(models.Model):
file = models.FileField(upload_to=u'anywhere',
storage=DBFileStorage())

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Usage
=====
Backstory
---------
The use case for this may be very small. At my company for our project we have
a giant test fixture, and we test file upload and creation. At the inception of
this module, I was working on changing our backend system to support Amazon S3
filestorage. I was getting frustrated with testing the assumption that a file
would exist on the hard drive, and not "somewhere else" so I started this module.
At first, I was going to use the BLOB field, but the way that we dump and load
our test fixtures didn't dump BLOBs by default.
Thus, the current implementation was born.
On to the Usage!
----------------
The normal usage for this is almost exactly the same for local file storage.
The user will upload a file the exact same way, and except for the url being an
md5 string, everything works exactly the same.
Saving file
~~~~~~~~~~~
The save method does most of the 'magic'. It stores the contents of the file as
a base64 string. It then takes the filename, and tries to get the mimetype from
that (for rendering purposes). Then it takes the md5 of the read file and uses
that as the "unique" key to access the file. Then it checks if the file exists
and if it doesn't, it will create the entry in the database.
Example from Tests:
.. code:: python
DBFileStorage.save("kris.jpg", file_object)
There will then be an entry in the database `50f3bfa6b91668789acab5f0a733fb3a`
that has the content of the `kris.jpg` file in it, with the content_type of
`image/jpeg`.
Opening file
~~~~~~~~~~~~
This file will then be accessible by the model field's `.open()` as normal.
The `.open()` returns a ContentFile of the base64 decoded data, so it should
work everywhere that a normal file would.
Viewing file with browser ( .url() )
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I've provided a `dbstorage_file` view that will render the file.
It gets the file object from the database referenced by the md5 (the
filefield.url() will provide this) automatically. It then returns a
HttpResponse of the decoded file and content type. Very straightforward.
Other operations
~~~~~~~~~~~~~~~~
Everything else, such as `.path()`, `.delete()`, `.size()`, `.exists()` are
exactly the same, in usage as normal.

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You can adapt this file completely to your liking, but it should at least You can adapt this file completely to your liking, but it should at least
contain the root `toctree` directive. contain the root `toctree` directive.
Welcome to Django DB File Storage's documentation! Django DB File Storage
================================================== ======================
.. toctree:: .. toctree::
:maxdepth: 2 :maxdepth: 2
:caption: Contents: :caption: Contents:
dbfilestorage/installation
dbfilestorage/usage
Indices and tables Indices and tables

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@ -13,9 +13,10 @@ Including another URLconf
1. Import the include() function: from django.conf.urls import url, include 1. Import the include() function: from django.conf.urls import url, include
2. Add a URL to urlpatterns: url(r'^blog/', include('blog.urls')) 2. Add a URL to urlpatterns: url(r'^blog/', include('blog.urls'))
""" """
from django.conf.urls import url from django.conf.urls import url, include
from django.contrib import admin from django.contrib import admin
urlpatterns = [ urlpatterns = [
url(r'^admin/', admin.site.urls), url(r'^admin/', admin.site.urls),
url(r'^dbfilestorage/', include('dbfilestorage.urls')),
] ]