from django.template import Library, Node, loader, resolve_variable, \
TemplateSyntaxError
from django.template.context import Context
register = Library()
class PartialTemplateNode(Node):
"""
Partial template templatetag to pass simple parameters formatted like:
{% partial_template template_name:template_name param1:variable1 param2:variable2 param4:"True" param5:22 %}
Based on other two django snippets:
http://www.djangosnippets.org/snippets/297/
http://www.djangosnippets.org/snippets/1302/
"""
def __init__(self, template_name, params):
self.template_name = template_name
self.params = params
def render(self, context):
for k,v in self.params.items():
if v[0] == '\"' or v[0] == '\'':
try:
# Trying to evaluate the python code in quotes (like "True")
self.params[k] = eval(v[1:-1])
continue
except:
pass
self.params[k] = resolve_variable(v, context)
template = loader.get_template('%s' % (self.template_name,))
template_context = Context(self.params)
return template.render(template_context)
@register.tag
def partial_template(parser, token):
items = token.split_contents()
if len(items)<3:
raise TemplateSyntaxError('Missing template tag arguments. '\
'At least 2 arguments needed')
template_name = items[1]
parameters = {}
for item in items[2:]:
param, value = item.split(':')
param = param.strip()
value = value.strip()
parameters[param] = value
return PartialTemplateNode(template_name, parameters)
Comments
templates are supposed to be safe. so don't use eval(v[1:-1])
second, why not add parent content to partial by default?
#