I updated MarkdownTextField to have some choices in markup. It currently support for Markdown, Textile, Plain Text, and Plain HTML. It will add %s_html
for the complied HTML and %s_markup_choices
for a drop down of markup choices.
Usage:
class MyModel(models.Model):
description = MarkupTextField()
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | from django.db.models import CharField, TextField
from django.utils.html import linebreaks
MARKUP_CHOICES = (
('html', 'Plain HMTL'),
('plain', 'Plain Text'),
)
try:
from markdown import markdown
MARKUP_CHOICES += (('markdown', 'Markdown'),)
except ImportError:
pass
try:
from textile import textile
MAKRUP_CHOICES += (('textile', 'Textile'),)
except ImportError:
pass
class MarkupTextField(TextField):
"""
A TextField taht automatically implements DB-cached makup translation.
Supports: Markdown, Plain HTML, Plain Text, and Textile.
"""
def __init__(self, *args, **kwargs):
super(MarkupTextField, self).__init__(*args, **kwargs)
def contribute_to_class(self, cls, name):
self._html_field = "%s_html" % name
self._markup_choices = "%s_markup_choices" % name
TextField(editable=False, blank=True, null=True).contribute_to_class(cls, self._html_field)
CharField(choices=MARKUP_CHOICES, max_length=10, blank=True, null=True).contribute_to_class(cls, self._markup_choices)
super(MarkupTextField, self).contribute_to_class(cls, name)
def pre_save(self, model_instance, add):
value = getattr(model_instance, self.attname)
markup = getattr(model_instance, self._markup_choices)
if markup == 'markdown':
html = markdown(value)
elif markup == 'plain':
html = linebreaks(value, autoescape=True)
elif markup == 'textile':
html = textile(value)
else:
html = value
setattr(model_instance, self._html_field, html)
return value
def __unicode__(self):
return self.attname
|
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Comments
I belive, that if you don't want to call markdown or any other postprocessor at any page view, then you should use Cache.
Storing additional data in the database is a bad idea, if you want to archieve a performance.
#
But it is the cache itself. Local cache of text field that stored in database. Whats wrong?
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