min:value

• The field under validation must have a minimum value. Strings and numerics are evaluated in the same fashion as the size rule.

data = %{
    name: "john",
    age: 19  ---> return error minimum value is 20
}
rules = [
    %{
      field: "name",
      validate: ["min:3"]
    },
    %{
      field: "age",
      validate: ["min:20"]
    }
  ]