Script to render simple Jinja2 templates.
This tool was implemented to solve my own needs for testing configs generated from templates in Ansible.
The idea is to build a YAML file with any context variables used in the template, and then simply render it to verify that it works as expected:
# j2render.py --ctx variables.yml nginx.conf.j2 > /etc/nginx/conf.d/test.conf
# nginx -t -c test.confusage: j2render.py [-h] [-v] [-d DIR] [--ctx FILE] [-s name value] [template]
Render a Jinja2 template.
positional arguments:
template Template file to render
optional arguments:
-h, --help show this help message and exit
-v, --version show program's version number and exit
-d DIR, --dir DIR Add a template directory
--ctx FILE File(s) with context variables
--env use OS env vars as setter for values before overriding
with filed values
-s name value, --set name value
Set context variable
$ echo "foo='{{ foo }}'" | j2render.py --set foo "some value"
foo='some value'$ j2render.py -s foo "my value" examples/simple.j2
This is a simple template that just renders the value of two context variables,
`foo' and `bar':
* foo: 'my value'
* bar: Undefined$ j2render --ctx examples/context.yml examples/list.md.j2 > list.md- Load custom filter modules?