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BindEnv details specified. Now less confusion.

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Bruce Wang 2019-06-20 15:08:30 +08:00 committed by Márk Sági-Kazár
parent 2b4f7d3cde
commit 96441b4b74
1 changed files with 2 additions and 3 deletions
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README.md
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@ -225,9 +225,8 @@ prefix.
`BindEnv` takes one or two parameters. The first parameter is the key name, the
second is the name of the environment variable. The name of the environment
variable is case sensitive. If the ENV variable name is not provided, then
Viper will automatically assume that the key name matches the ENV variable name,
but the ENV variable is IN ALL CAPS. When you explicitly provide the ENV
variable name, it **does not** automatically add the prefix.
Viper will automatically assume that the ENV variable is the prefix + "_" + the key name in ALL CAPS. When you explicitly provide the ENV
variable name which is the second parameter, it **does not** automatically add the prefix, which means if the second parameter is "id", the environment variable is just plain "ID".
One important thing to recognize when working with ENV variables is that the
value will be read each time it is accessed. Viper does not fix the value when