Login

Snippets by bikeshedder

Snippet List

Changing the look of newforms as_table with a custom BaseForm

I wanted to mark rows with an erroneous input with 'class="error"' and move the errorlist below the input tag so I wrote a NormalRowFormatter which behaves like a format string by overwriting \_\_mod\_\_. Examples: class MyForm(PrettyBaseForm, forms.Form): # add your fields here SomethingForm = form_for_model(Something, form=PrettyBaseForm)

  • newforms
  • error
  • baseform
  • as_table
  • pretty
  • prettybaseform
  • _html_output
  • style
Read More

Base64Field: base64 encoding field for storing binary data in Django TextFields

This Base64Field class can be used as an alternative to a BlobField, which is not supported by Django out of the box. The base64 encoded data can be accessed by appending _base64 to the field name. This is especially handy when using this field for sending eMails with attachment which need to be base64 encoded anyways. **Example use:** class Foo(models.Model): data = Base64Field() foo = Foo() foo.data = 'Hello world!' print foo.data # will 'Hello world!' print foo.data_base64 # will print 'SGVsbG8gd29ybGQh\n'

  • django
  • model
  • field
  • base64
  • blob
  • base64field
Read More

manage.py with magic python path

I tend to have all my python code together in a 'python' directory. e.g. a typical project layout of mine looks like: /python /python/myproject - project python code /python/django - local copy of django /python/foolib - some third party library /media /templates ... Since I don't want to set the python path explicitly I just assume the 'manage.py' is in the right place and use its __file__ variable to set up the python path correctly. I use the same trick for my settings.py for setting MEDIA_ROOT and TEMPLATE_DIRS.

  • python
  • path
  • magic
  • pythonpath
  • sys.path
Read More

Add validation for 'unique' and 'unique_together' constraints to newforms created dynamically via form_for_model or form_for_instance

This snippet provides a form_for_model and form_for_instance function which create newforms that respect the unique and unique_together constraints defined in the model. One thing about the coding style in this code snippet: Classes are capitalized even if they're passed as arguments. Thus "Model" is a model class while "model" is a model instance.

  • newforms
  • form_for_model
  • form_for_instance
  • unique_together
  • unique
  • formfield_factory
Read More