Simple way to initialize a config file

[michaeleekk]

Hello. I was searching for a way to initialize the config file, but still couldn't find one.

viper.SetConfigName("config")
viper.SetConfigType("json")
viper.AddConfigPath("$HOME")

And then I tried the new SafeWriteConfig() or any of the variety merged two weeks ago, but it didn't create new file or it will overwrite the original config file no matter what. And because of the $HOME, I might need to write a function to be cross-platform. I just wish there could be a cleaner way.

Or we could add O_CREATE to this line of code ?
https://github.com/spf13/viper/blob/master/viper.go#L1254

And also is it a good idea to have SafeWriteConfig() to create a new file with the first config path and config name ?

[revilwang]

Is there anyone working on this issue? 18 months passed and WriteConfig still requires the file must exist before writing, which is different from what the docs say.

[berlincount]

This seems to be fixed?

[kevingentile]

v1.4.0: SafeWriteConfig() does not create a new config file:

File "config" Not Found in "[{path hidden}]"

Create and initialize with:

// stub init
configHome := "my/path"
configName := "config"
configType := "yml"
configPath := filepath.Join(configHome, configName+"."+configType)
// ----

viper.AddConfigPath(configHome)
viper.SetConfigName(configName)
viper.SetConfigType(configType)

_, err := os.Stat(configPath)
if !os.IsExist(err) {
    if _, err := os.Create(configPath); err != nil { // perm 0666
        // handle failed create
        ....
    }
}
if err := viper.SafeWriteConfig(); err != nil {
    // handle failed write
    ....
}

[errogaht]

as for me it is strange. i want to use viper to manage all cases with config files, but i have to manually create file, why?

[malohr]

Hi there, not sure if this is still an issue but here is the simple solution you were looking for:

// using the home dir
home, err := os.UserHomeDir()
cobra.CheckErr(err)

configName := ".mycfg"

viper.WriteConfigAs(fmt.Sprintf("%s/%s", home, configName))

[marcosanchotene]

Adding the call to viper.SafeWriteConfig(), after configuring the path and file name, worked for me:

func initConfig() {
	if cfgFile != "" {
		// Use config file from the flag.
		viper.SetConfigFile(cfgFile)
	} else {
		// Find home directory.
		home, err := os.UserHomeDir()
		cobra.CheckErr(err)

		// Search config in home directory with name ".config.yaml".
		viper.AddConfigPath(home)
		viper.SetConfigType("yaml")
		viper.SetConfigName(".config")
		viper.SafeWriteConfig()
	}

}