diff options
Diffstat (limited to 'docs/templates_python.txt')
| -rw-r--r-- | docs/templates_python.txt | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/docs/templates_python.txt b/docs/templates_python.txt index 1eeede1fe8..853707f58c 100644 --- a/docs/templates_python.txt +++ b/docs/templates_python.txt @@ -212,21 +212,24 @@ template tags. If an invalid variable is provided to one of these template tags, the variable will be interpreted as ``None``. Filters are always applied to invalid variables within these template tags. +If ``TEMPLATE_STRING_IF_INVALID`` contains a ``'%s'``, the format marker will +be replaced with the name of the invalid variable. + .. admonition:: For debug purposes only! - While ``TEMPLATE_STRING_IF_INVALID`` can be a useful debugging tool, - it is a bad idea to turn it on as a 'development default'. + While ``TEMPLATE_STRING_IF_INVALID`` can be a useful debugging tool, + it is a bad idea to turn it on as a 'development default'. - Many templates, including those in the Admin site, rely upon the - silence of the template system when a non-existent variable is + Many templates, including those in the Admin site, rely upon the + silence of the template system when a non-existent variable is encountered. If you assign a value other than ``''`` to - ``TEMPLATE_STRING_IF_INVALID``, you will experience rendering + ``TEMPLATE_STRING_IF_INVALID``, you will experience rendering problems with these templates and sites. - Generally, ``TEMPLATE_STRING_IF_INVALID`` should only be enabled - in order to debug a specific template problem, then cleared + Generally, ``TEMPLATE_STRING_IF_INVALID`` should only be enabled + in order to debug a specific template problem, then cleared once debugging is complete. - + Playing with Context objects ---------------------------- @@ -866,7 +869,7 @@ current context, available in the ``render`` method:: try: actual_date = resolve_variable(self.date_to_be_formatted, context) return actual_date.strftime(self.format_string) - except VariableDoesNotExist: + except template.VariableDoesNotExist: return '' ``resolve_variable`` will try to resolve ``blog_entry.date_updated`` and then |