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======================== | ||
Django Dynamic Filenames | ||
======================== | ||
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Write advanced filename patterns using the `Format String Syntax`__. | ||
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__ https://docs.python.org/3/library/string.html#format-string-syntax | ||
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Getting Started | ||
--------------- | ||
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Installation | ||
~~~~~~~~~~~~ | ||
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.. code-block:: bash | ||
pip install django-dynamic-filenames | ||
Samples | ||
~~~~~~~ | ||
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Basic example: | ||
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.. code-block:: python | ||
from django.db import models | ||
from dynamic_names import FilePattern | ||
upload_to_pattern = FilePattern( | ||
filename_pattern='{app_name:.25}/{model_name:.30}/{uuid:base32}{ext}' | ||
) | ||
class FileModel(models.Model): | ||
my_file = models.FileField(upload_to=upload_to_pattern) | ||
Auto slug example: | ||
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Features | ||
-------- | ||
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Field names | ||
~~~~~~~~~~~ | ||
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``ext`` | ||
File extension including the dot. | ||
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``name`` | ||
Filename excluding the folders. | ||
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``model_name`` | ||
Name of the Django model. | ||
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``app_label`` | ||
App label of the Django model. | ||
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``instance`` | ||
Instance of the model before it has been saved. You may not have a primary | ||
key at this point. | ||
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``uuid`` | ||
UUID version 4 that supports multiple type specifiers. The UUID will be | ||
the same should you use it twice in the same string, but different on each | ||
invocation of the ``upload_to`` callable. | ||
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The type specifiers allow you to format the UUID in different ways, e.g. | ||
``{uuid:x}`` will give you a with a hexadecimal UUID. | ||
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The supported type specifiers are: | ||
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``s`` | ||
String representation of a UUID including dashes. | ||
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``i`` | ||
Integer representation of a UUID. Like to ``UUID.int``. | ||
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``x`` | ||
Hexadecimal (Base16) representation of a UUID. Like to ``UUID.hex``. | ||
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``X`` | ||
Upper case hexadecimal representation of a UUID. Like to | ||
``UUID.hex``. | ||
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``base32`` | ||
Base32 representation of a UUID without padding. | ||
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``base64`` | ||
Base64 representation of a UUID without padding. | ||
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.. warning:: Not all file systems support Base64 file names. | ||
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All type specifiers also support precisions to cut the string, | ||
e.g. ``{{uuid:.2base32}}`` would only return the first 2 characters of a | ||
Base32 encoded UUID. | ||
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Type specifiers | ||
~~~~~~~~~~~~~~~ | ||
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You can also use a special slug type specifier, that slugifies strings. | ||
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Example: | ||
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.. code-block:: python | ||
from django.db import models | ||
from dynamic_names import FilePattern | ||
upload_to_pattern = FilePattern( | ||
filename_pattern='{app_name:.25}/{model_name:.30}/{instance.title:.40slug}{ext}' | ||
) | ||
class FileModel(models.Model): | ||
title = models.CharField(max_length=100) | ||
my_file = models.FileField(upload_to=upload_to_pattern) | ||
Slug type specifiers also support precisions to cut the string. In the example | ||
above the slug of the instance title will be cut at 40 characters. |
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