Hello, I wrote a model to manage small TeX fragments:
class LaTeX(models.Model):
latex = models.TextField(help_text="Un extrait de source LaTeX")
macros = models.ForeignKey(Macros)
For now, I override save() to compile the latex string using macros
strings with LaTeX compilator, and produce a
png image that I store with a name made with self.id (so I need to
call super...save() before). But in case of
LaTeX compilation errors, I just raise an exception that will not
appear in production with DEBUG = False.
I'd like to treat LaTeX compilation errors as standard validation
errors to
appear in error list in forms, admin...
I don't know how to do this, I looked at
- signals (pre-post save) : what about validation ?
- write a TextField subclass and override validate to do compilation
here ? But I need to access another field 'macros' and model.id ...
- I found http://code.djangoproject.com/ticket/6845 with a patch to do
model validation (1 year ago) that looks
like what I need, but is it stable?
Any hint ?
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