def _get_templates_used(self, template_instance):
try:
compiled_template = _Template(template_instance.content)
used_templates = get_all_templates_used(compiled_template.nodelist)
except TemplateSyntaxError, e:
raise ValidationError(
self._error_msg('syntax_error', template_instance.name, e))
def clean(self):
"""
Validates whether this template will work on site pages.
In order for a template `A` to work on a page from site `A` the
following conditions need to exist:
* template A needs to be assigned to site A
* content from template A needs to be a valid django template code
* other templates used in template A (with `include`/`extend`/etc.
template tags) need to be assigned to site `A`
* other templates used should not create infinite recursive calls(
template A extends template B, template B extends template A)
This method makes sure all this conditions comply.
"""
cleaned_data = super(ExtendedTemplateAdminForm, self).clean()
if not set(['name', 'content', 'sites']) <= set(cleaned_data.keys()):
return cleaned_data
if not cleaned_data['sites']:
cleaned_data['sites'] = Site.objects.none()
sites_assigned_in_widget = [site.domain
for site in cleaned_data['sites']]
try:
compiled_template = _Template(cleaned_data.get('content'))
#at this point template content does not have any syntax errors
handle_recursive_calls(cleaned_data['name'],
cleaned_data['content'])
used_templates = get_all_templates_used(compiled_template.nodelist)
except TemplateSyntaxError, e:
raise ValidationError(
self._error_msg('syntax_error', cleaned_data['name'], e))
def _get_used_templates(self, template_name, site_domain, pages_search):
"""
Returns a set of templates that template `A` uses.
Raises validation errors if the templates used are invalid.
This method is used in 2 cases:
1. when searching for templates of pages for a certain site A that
is selected to be unassigned
2. when searching for templates assigned to a certain site A, site
that is selected to be unassigned from template `A`
pages_search - determines which error message should be used
- is true if this method is called when checking
templates from pages of a site that is about to be
unassigned
"""
try:
template = Template.objects.get(name=template_name)
return set(get_all_templates_used(_Template(
template.content).nodelist))
except Template.DoesNotExist:
if pages_search:
pages_to_print = Page.objects.filter(
site__domain=site_domain, template=template_name)
raise ValidationError(self._error_msg(
'nonexistent_in_pages', template_name, site_domain,
_format_pages(pages_to_print)))
except TemplateSyntaxError, e:
raise ValidationError(self._error_msg(
'syntax_error_unassigning', template_name, e, site_domain))
def _get_used_templates(self, template_name, site_domain, pages_search):
try:
template = Template.objects.get(name=template_name)
return set(get_all_templates_used(_Template(
template.content).nodelist))
except Template.DoesNotExist:
if pages_search:
pages_to_print = Page.objects.filter(
site__domain=site_domain, template=template_name)
raise ValidationError(self._error_msg(
'nonexistent_in_pages', template_name, site_domain,
_format_pages(pages_to_print)))
except TemplateSyntaxError, e:
raise ValidationError(self._error_msg(
'syntax_error_unassigning', template_name, e, site_domain))
def get_templates_that_use_template(template_name, only_one_required=False):
quoted_name = "'%s'" % template_name
double_quoted_name = '"%s"' % template_name
candidates = Template.objects.filter(Q(content__contains=quoted_name) |
Q(content__contains=double_quoted_name))
child_templates = []
for child_template in candidates:
try:
parents = get_all_templates_used(_Template(child_template.content).nodelist)
except TemplateDoesNotExist:
parents = []
if template_name in parents:
if only_one_required:
return [child_template]
child_templates.append(child_template)
return child_templates
def clean(self):
cleaned_data = super(ExtendedTemplateAdminForm, self).clean()
if not set(['name', 'content', 'sites']) <= set(cleaned_data.keys()):
return cleaned_data
required_sites = [site.domain for site in cleaned_data['sites']]
try:
compiled_template = _Template(cleaned_data.get('content'))
#here the template syntax is valid
handle_recursive_calls(cleaned_data['name'], cleaned_data['content'])
used_templates = get_all_templates_used(compiled_template.nodelist)
except TemplateSyntaxError, e:
raise ValidationError(
self._error_msg('syntax_error', cleaned_data['name'], e))