interface language selector in rails form?
What would be the way to go on having a locale selection drop down in a form?

I have a User model with a column "lng" where I store the "en","fr", etc i18n locale strings.

My goal is to have a drop down with all the languages listed " English ", " French " and on form update it stores the correct "en", "fr" value in the user table.

What would be a way to go on this? 
interface language selector in rails form?
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What would be the way to go on having a locale selection drop down in a form?

I have a User model with a column "lng" where I store the "en","fr", etc i18n locale strings.

My goal is to have a drop down with all the languages listed " English ", " French " and on form update it stores the correct "en", "fr" value in the user table.

What would be a way to go on this? 