How to receive data in form from another component in ReactJS

Question

I'm building a react weather app where users are allowed to enter their city name and the weather info is displayed back to the user.

The problem is, I've got the input and button in a form, and I want to receive data from another component called WeatherApp. I want the user to be able to enter their city and get the weather info using the form.

how do I link the two components

the form component

import '../App.css';
import Input from './Input';
import Button from './Button';
import { useState } from 'react';

const Form = ({handleQueryChange}) => {
    const [city, setCity] = useState('')

    const handleChange = (e) => {
        setCity(e.target.value)
       
    }

    const handleSubmit  = (e) => {
        e.preventDefault();
        handleQueryChange(city);
        
    }
   
    return (  
    <div>
        <form className="inputForm" onSubmit={handleSubmit}>
       <Input value={city} onChange={handleChange} />
       <Button/>
        </form>

    </div>);
}
 
export default Form;

the weatherapp component

import React from 'react';
import { BrowserRouter,  Routes,Route } from 'react-router-dom';
import { useState, useEffect } from 'react';
import { WiDaySunny,WiCloud, WiNightCloudy,WiHumidity, WiNightClear } from 'react-icons/wi';
import Layout from './Layout';
import Home from './Home';
import Minutecast from './Minutecast';
import Hourly from './Hourly';
import Today from './Today';
import '../App.css';


const WeatherApp = () => {
const [data, setData] = useState([]);
const [query, setQuery] = useState('Accra');

const handleQueryChange = (data) => {
    setQuery(data.location.name);

}

const getWeatherIcons = (description) =>{
    switch(description.toLowerCase()) {
        case 'sunny':
            return <WiDaySunny size='100px'/>;
        case 'cloud':
                return <WiCloud  size='100px'/>;
        case 'clear':
                return <WiNightClear size='100px'/>;
        case 'partly cloudy':
            
                return <WiNightCloudy size='150px' color='blue' />;
        default:
                return <WiDaySunny color='red' size='100px' />;

    }
}

const convertToWhole = (tem) =>{
  const whole = Math.trunc(tem);
  return whole;


}

useEffect(()=>{
    
const fetchWeatherData = async () => {
  try {
    const response = await fetch(`https://api.weatherapi.com/v1/forecast.json?key=95f0ddb3a06a4a358cf223933242311&q=${query}&days=10&aqi=yes&alerts=no`);
    const result = await response.json();
    setData(result);

  console.log(result);
  } catch (error) {
    console.error("Error fetching weather data:", error);
  }
 
};
fetchWeatherData();
}, [data]);



    return ( <>
    <div className="formContainer">
    {/* <Form onSubmit={handleQueryChange} /> */}
    </div>
    <BrowserRouter>
    <Routes>
       <Route path ='/'  element={< Layout />}>
       <Route index element={<Home  data={data} getWeatherIcons={getWeatherIcons} convertToWhole={convertToWhole}/>} />
       <Route path='minutecast' element={<Minutecast />}/>
       <Route path='hourly' element={<Hourly data={data} convertToWhole={convertToWhole}/>}/>
       <Route path='today'element={<Today data={data} />}/>
     </Route>
     </Routes>
   </BrowserRouter>
  
    </>
    )
   
}
 
export default WeatherApp;

Answer 1

Your question is kinda hard cause you are not giving us enough information. You can use useContext so you can store this information in the context and then use it wherever you can. Or maybe use Local Storage or a Cookie, or maybe create a hook that grabs this info from DB in case you have it.

Would be good to know how you use this form, like is inside an specific page? Is sibling, parent or has no connection with any other component. Maybe you can simply pass this info as a prop (but probably is not the best).

I think this is the only thing I can come up with the info I have from your answer.

In any case I can link you the docs for this stuff:

useContext

passing props

local storage

cookies