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Diffstat (limited to 'docs/model-api.txt')
| -rw-r--r-- | docs/model-api.txt | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/docs/model-api.txt b/docs/model-api.txt index 19f8fb6d5f..9f63b44ee8 100644 --- a/docs/model-api.txt +++ b/docs/model-api.txt @@ -269,6 +269,13 @@ For example, say your ``MEDIA_ROOT`` is set to ``'/home/media'``, and upload a file on Jan. 15, 2007, it will be saved in the directory ``/home/media/photos/2007/01/15``. +If you want to retrieve the upload file's on-disk filename, or a URL that +refers to that file, or the file's size, you can use the +``get_FOO_filename()``, ``get_FOO_url()`` and ``get_FOO_size()`` methods. +They are all documented here__. + +__ ../db-api/#get-foo-filename + Note that whenever you deal with uploaded files, you should pay close attention to where you're uploading them and what type of files they are, to avoid security holes. *Validate all uploaded files* so that you're sure the files are @@ -338,9 +345,14 @@ image. Has two extra optional arguments, ``height_field`` and ``width_field``, which, if set, will be auto-populated with the height and width of the image each time a model instance is saved. +In addition to the special ``get_FOO_*`` methods that are available for +``FileField``, an ``ImageField`` also has ``get_FOO_height()`` and +``get_FOO_width()`` methods. These are documented elsewhere_. + Requires the `Python Imaging Library`_. .. _Python Imaging Library: http://www.pythonware.com/products/pil/ +.. _elsewhere: ../db-api/#get-foo-height-and-get-foo-width ``IntegerField`` ~~~~~~~~~~~~~~~~ @@ -463,8 +475,10 @@ If ``True``, Django will store empty values as ``NULL`` in the database. Default is ``False``. Note that empty string values will always get stored as empty strings, not -as ``NULL`` -- so use ``null=True`` for non-string fields such as integers, -booleans and dates. +as ``NULL``. Only use ``null=True`` for non-string fields such as integers, +booleans and dates. For both types of fields, you will also need to set +``blank=True`` if you wish to permit empty values in forms, as the ``null`` +parameter only affects database storage (see blank_, below). Avoid using ``null`` on string-based fields such as ``CharField`` and ``TextField`` unless you have an excellent reason. If a string-based field |