Not reading my .env file

[tausyy]

I have my .env file with 2 properties

BOT_TOKEN=rightHereIsWhereMyTokenIs
TEST=1234

when I go run main.go with this code this is my output

env: environment variable "BOT_TOKEN" should not be empty
{BotToken: Test:0}

What am I doing wrong?

package main

import (
	"fmt"

	"github.com/caarlos0/env/v6"
)

type config struct {
	BotToken string `env:"BOT_TOKEN,notEmpty"`
	Test     int32  `env:"TEST"`
}

func main() {
	cfg := config{}
	if err := env.Parse(&cfg); err != nil {
		fmt.Printf("%+v\n", err)
	}

	fmt.Printf("%+v\n", cfg)
}

[caarlos0]

This lib does not handle .env files. It only parses environment variables to an user-defined struct.

[pedromassango]

I think this sould be made clear in the docs of this lib.

[caarlos0]

it doesn't say anything about env files at all ¯_(ツ)_/¯

[pedromassango]

... and that is the problem 😄

For someone who is just starting with GoLang and has no clue about this package he will definitely try it just to find out and it does not work. If we had that info in the readme file it would be a different story.

BTW, would it be possible to make it read from .env file and return a, let's say, EnvConfig struct?

[caarlos0]

For someone who is just starting with GoLang and has no clue about this package he will definitely try it just to find out and it does not work. If we had that info in the readme file it would be a different story.

I understand, but if we start adding everything it doesn't do but users could think it does in the readme, it would get quite big...

BTW, would it be possible to make it read from .env file and return a, let's say, EnvConfig struct?

there are another libs for this. This one only parses environment variables into structs.

[svalls26]

Hey! Just found this discussion and the same happened to me, when reading the readme gives the impression that it is going to take the vars directly from your .env file. I'm new in Go, and I figured it out because other coworker told me I need to load the .env with other pckg.
I understand the worries about having a big readme but I definitely think it's worth to mentioned that the .env file needs to be loaded apart in order to use it.

[caarlos0]

which part of the readme gave you that impression?

there's no mention of env files anywhere...

[andradei]

You're right about the README.
I think people are getting the "wrong impression" because that's such a common feature it's pretty much assumed.

This package would really be complete if it had the option to read from and .env file.

[IlmirSharifullin]

I've also ran into this problem xD. You, guys, can use github.com/joho/godotenv (or its autoload) module together with this one.
Something like:
`import (
"fmt"
"github.com/caarlos0/env/v10"
_ "github.com/joho/godotenv/autoload"
)

type Config struct {
BotToken string env:"BOT_TOKEN"
// and more more
}

func main() {
cfg := Config{}
if err := env.Parse(&cfg); err != nil {
fmt.Printf("%+v\n", err)
}
fmt.println(cfg.BotToken)
}`