def clean_content(self):
content = self.cleaned_data.get('content', '')
if content:
origin = Origin(content)
# Try to create a Template
try:
template = Template(template_string=force_text(content),
origin=origin)
except Exception as e:
# This is an error with creating the template
self.exc_info = {
'message': e.args,
'line': e.token.lineno,
'name': origin.name,
}
raise forms.ValidationError('Invalid Django Template')
# Template has been created; try to parse
try:
template.compile_nodelist()
except Exception as e:
# This is an error with parsing
# The data we pass to the views is in e.template_debug
e.template_debug = template.get_exception_info(e, e.token)
self.exc_info = e.template_debug
raise forms.ValidationError('Parsing Error')
return content
def clean(self):
template = DjangoTemplate('')
template.source = self.changed_content
try:
engine = Engine.get_default()
lexer = DebugLexer(self.changed_content)
tokens = lexer.tokenize()
parser = Parser(tokens, engine.template_libraries,
engine.template_builtins, Origin(UNKNOWN_SOURCE))
parser.parse()
except TemplateSyntaxError as e:
exception_info = template.get_exception_info(e, e.token)
raise ValidationError({
'changed_content':
mark_safe(
'{message}<br/>Line {line}:\n<pre>{before}<b>{during}</b>{after}</pre>'
.format(**exception_info))
}) from e
def clean_content(self):
content = self.cleaned_data.get('content', '')
if content:
origin = StringOrigin(content)
try:
from django.template.debug import DebugLexer, DebugParser
except ImportError:
# django.template.debug doesn't exist in Django >= 1.9, so use
# Template from django.template instead
from django.template import Template
# Try to create a Template
try:
template = Template(template_string=origin)
# This is an error with creating the template
except Exception as e:
self.exc_info = {
'message': e.args,
'line': e.token.lineno,
'name': origin.name,
}
raise forms.ValidationError('Invalid Django Template')
# Template has been created; try to parse
try:
template.compile_nodelist()
# This is an error with parsing
except Exception as e:
# The data we pass to the views is in e.template_debug
e.template_debug = template.get_exception_info(e, e.token)
self.exc_info = e.template_debug
raise forms.ValidationError('Parsing Error')
else:
lexer = DebugLexer(content, origin)
try:
parser = DebugParser(lexer.tokenize())
parser.parse()
except Exception as e:
self.exc_info = sys.exc_info()
if not hasattr(self.exc_info[1], 'django_template_source'):
self.exc_info[1].django_template_source = origin, (0, 0)
raise forms.ValidationError('Invalid Django Template')
return content
