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Revert "Add variable expansion (fix #421)"
This reverts commit c61bfb0.
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Original file line number | Diff line number | Diff line change |
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@@ -23,28 +23,6 @@ And use it with ``settings.py`` as follows: | |
:start-after: -code-begin- | ||
:end-before: -overview- | ||
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Variables can contain references to another variables: ``$VAR`` or ``${VAR}``. | ||
Referenced variables are searched in the environment and within all definitions | ||
in the ``.env`` file. References are checked for recursion (self-reference). | ||
Exception is thrown if any reference results in infinite loop on any level | ||
of recursion. Variable values are substituted similar to shell parameter | ||
expansion. Example: | ||
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.. code-block:: shell | ||
# shell | ||
export POSTGRES_USERNAME='user' POSTGRES_PASSWORD='SECRET' | ||
.. code-block:: shell | ||
# .env | ||
POSTGRES_HOSTNAME='example.com' | ||
POSTGRES_DB='database' | ||
DATABASE_URL="postgres://${POSTGRES_USERNAME}:${POSTGRES_PASSWORD}@${POSTGRES_HOSTNAME}:5432/${POSTGRES_DB}" | ||
The value of ``DATABASE_URL`` variable will become | ||
``postgres://user:[email protected]:5432/database``. | ||
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The ``.env`` file should be specific to the environment and not checked into | ||
version control, it is best practice documenting the ``.env`` file with an example. | ||
For example, you can also add ``.env.dist`` with a template of your variables to | ||
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