check variable type inside Jinja2 in Flask
You are looking for the mapping
test:
{% if {'a': 1, 'b': 2} is mapping %} "Oh Yes!"{% else %} "Oh No!"{% endif %}
Jinja is not Python though, so you don't have access to all the builtins (type
and print
do not exist, for example, unless you add them to the context. In Flask, you do this with the context_processor
decorator).
You don't actually need print
at all. By default everything is output (unless you are in a child template that extends
a parent, in which case you can do interesting things like the NULL Master fallback because only blocks with names available in the master template are output).
How about:
{% if {'a':1,'b':2} is mapping %} print "Oh Yes!!"{% else %} print "Oh No!!!"{% endif %}
see List of Builtin Tests for reference.