GIN_MODE set in .env file does not take effect

[mrold]

• go version:1.12.1
• gin version (or commit ref):latest
• operating system:10.14.2

Description

I'v add my application configuration to a .env file , and load it by GoDotEnv , gin can get the env var "PORT" but not "GIN_MODE".

Screenshots

package main

import (
	"fmt"
	"github.com/gin-gonic/gin"
	"github.com/joho/godotenv"
	"os"
	"log"
)

func init()  {
	err := godotenv.Load()
	if err != nil {
		log.Fatal("Error loading .env file")
	}

}

func main() {
	fmt.Println(os.Getenv("PORT"))
	fmt.Println(os.Getenv("GIN_MODE"))

	//gin.SetMode(gin.ReleaseMode)
	r := gin.Default()
	r.GET("/ping", func(c *gin.Context) {
		c.JSON(200, gin.H{
			"message": "pong",
		})
	})
	r.Run() // listen and serve on 0.0.0.0:8080
}

[dmarkham]

gin also reads the environment in a init function and I'm guessing it's running before yours. The best thing to do if your not going to set the Environment variable outside of go, is to use the gin.SetMode() after reading in your config.

gin/mode.go

Lines 46 to 49 in 2e915f4

	func init() {
	mode := os.Getenv(EnvGinMode)
	SetMode(mode)
	}

[mrold]

@dmarkham OK, let me try again, thanks so much.