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Support loading configuration from text files

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TOML is a very popular format now, and is taking hold in the Python
ecosystem via pyproject.toml (among others). This allows toml config
files via,

    app.config.from_file("config.toml", toml.loads)

it also allows for any other file format whereby there is a loader
that takes a string and returns a mapping.
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pgjones 2019-10-11 11:52:29 +01:00 • committed by David Lord
parent 7df10cd8e0
commit 829aa65e64
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3 changed files with 59 additions and 19 deletions
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18
docs/config.rst
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@ -393,8 +393,8 @@ The following configuration values are used internally by Flask:
Added :data:`MAX_COOKIE_SIZE` to control a warning from Werkzeug.
Configuring from Files
----------------------
Configuring from Python Files
-----------------------------
Configuration becomes more useful if you can store it in a separate file,
ideally located outside the actual application package. This makes
@ -440,6 +440,20 @@ methods on the config object as well to load from individual files. For a
complete reference, read the :class:`~flask.Config` object's
documentation.
Configuring from files
----------------------
It is also possible to load configure from a flat file in a format of
your choice, for example to load from a TOML (or JSON) formatted
file::
import json
import toml
app.config.from_file("config.toml", load=toml.load)
# Alternatively, if you prefer JSON
app.config.from_file("config.json", load=json.load)
Configuring from Environment Variables
--------------------------------------