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Render templates with data from various sources

Project description

tpl: Render templates with data from various sources

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You want to fill data into a template file?

tpl --yaml data.yaml template.file > rendered.file

You have everything already set up in your environment and now you just want to POST it somewhere?

tpl structure.json | curl -X POST -H "Content-Type: application/json" -d@-

You want to fill in a template in your CD pipeline and have access to docker?

echo "My go-to editor is {{VISUAL}} on {{OS}}" \
  | docker run --rm -i -e "VISUAL" -e "OS=$(uname)" m3t0r/tpl -


make install or pip install tpl

Input sources

tpl supports multiple sources:

  • YAML files (--yaml <file>)
  • JSON files (--json <file>)
  • environment variables (--environment)

You can specify multiple sources at once, but if a key is present in more than one then it's value will be taken from the latter source. This can be useful if you have default values that you want to always be present:

tpl \
  --yaml defaults.yaml \
  --json <(curl -H "Content-Type: application/json" \
  template.jinja2 > results.html


  tpl [options] <template_file>
  tpl --help
  tpl --version

tpl uses the Jinja2 templating engine to render it's output. You can find the
documentation for template designers at:

If you provide multiple data sources they will be merged together. If a key is
present in more than one source the value of the source that was specified
last will be used. Nested objects will be merged with the same algorithm.

  -e, --environment    Use all environment variables as data
  --json=<file>        Load JSON data from a file or STDIN
  --yaml=<file>        Load YAML data from a file or STDIN

Project details

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