False value in json file

[MohammadReza]

I'm trying to fill a required boolean field in the JSON file, and when the value is false, the following error raises:
field "boolVarName" is required but the value is not provided.
But when I change the value to true, everything goes well.

I think the issue is in the condition of line 316 of cleanenv.go, or the condition of line 329 where you check meta.isFieldValueZero().

[Paweł Kierski]

You can use pointer for required values with proper zero values.

type Config struct {
    FeatureEnabled *bool `env-required:"true" yaml:"enabled"`
}

[MohammadReza]

You can use pointer for required values with proper zero values.

type Config struct {
    FeatureEnabled *bool `env-required:"true" yaml:"enabled"`
}

Thank you, it works.
Although I think the main problem still exists and can be solved.

[Paweł Kierski]

Some "no value" is required for detecting non-existent but required fields. Zero value is not so good idea, especially for bool. Pointer with nil as "no value" is quite good choice, but env-required:"true" should be forbidden for non-pointer types. So isFieldValueZero() should be transformed into isFieldValueNil() and should be check for *Type fields only.

Anther problem is lack of support pointer fields for environment vars: #81