Django datetimefield not validating
For example, if you blindly let somebody upload files, without validation, to a directory that’s within your Web server’s document root, then somebody could upload a CGI or PHP script and execute that script by visiting its URL on your site. Also note that even an uploaded HTML file, since it can be executed by the browser (though not by the server), can pose security threats that are equivalent to XSS or CSRF attacks. Since the underlying file is opened implicitly when accessing it, it may be unnecessary to call this method except to reset the pointer to the underlying file or to change the This method takes a filename and file contents and passes them to the storage class for the field, then associates the stored file with the model field. Note that when a model is deleted, related files are not deleted. You may want to avoid the overhead of an index if you are creating a foreign key for consistency rather than joins, or if you will be creating an alternative index like a partial or multiple column index.
If you need to cleanup orphaned files, you’ll need to handle it yourself (for instance, with a custom management command that can be run manually or scheduled to run periodically via e.g. , it will be invoked every time a new form is instantiated.
To find which widget is used on which field, see the documentation about If you want to make one widget instance look different from another, you will need to specify additional attributes at the time when the widget object is instantiated and assigned to a form field (and perhaps add some rules to your CSS files).
For example, take the following simple form: On a real Web page, you probably don’t want every widget to look the same.
It may also be invoked when a model is validated, for example by management commands or the admin.
It is also possible to specify the ‘type’ attribute to take advantage of the new HTML5 input types. This hook is necessary because some widgets have multiple HTML elements and, thus, multiple IDs.
Grouped options may be combined with ungrouped options within a single list (such as the The name of the database column to use for this field.
If this isn’t given, Django will use the field’s name.
Also, you can easily and the default form widget will be a select box with these choices instead of the standard text field.
The first element in each tuple is the actual value to be set on the model, and the second element is the human-readable name.