Tag: code

I’m building a website, and needed a way to save a list of pages and page ranges from a book or magazine. I wanted to to be a little more strict than just saving it as a string without any cleanup or validation, so I wrote a custom Django model field (and accompanying form field).

It either just validates and cleans so that

4-33, 43, 45, 60-65, 44, 59

becomes the tidy

4-33, 43-45, 59-65

…or, if you comment out the raising of the ValidationError in the form field’s validate() method, it will actually clean up any junk characters for you, so even this horrible mess:

;4-33, 46a fads i44 ,p45o

gets cleaned to

4-33, 44-46

Enjoy!