Go struct with methods to handle input. Good idea or Bad idea based on the given situation?

 Query parameter based on which data is sent back. It could be following:

    Latitude and Longitude (Decimal degree) e.g: q=48.8567,2.3508
    city name e.g.: q=Paris
    US zip e.g.: q=10001
    UK postcode e.g: q=SW1
    Canada postal code e.g: q=G2J
    metar:<metar code> e.g: q=metar:EGLL
    iata:<3 digit airport code> e.g: q=iata:DXB
    auto:ip IP lookup e.g: q=auto:ip
    IP address (IPv4 and IPv6 supported) e.g: q=100.0.0.1

package searchinput

import (
    "html/template"
    "net/http"
    "strings"
    "log"
)

const WEATHER_API = "https://api.weatherapi.com/v1"

type WeatherInput struct {
    City string
    Zip int
    UKpost string
    CApost string
    AirportCode string
}


func New() *WeatherInput {
    return &WeatherInput{}
}

func (wi *WeatherInput)