Reactjs Custom Fetch Hooks

Usage and Installation

change directory to your src/ and execute the following comand:

git clone https://github.com/Newton-Nganga/awesome-react-fetch-hooks.git hooks/

Lastly execute this command to clean up the directory:

cd hooks/ ; sudo rm -r .git/

And viola! you can now import the hooks where you need them.

Preliquisites

• Be using Reactjs or Vite

Example of useDataFetch hook looks like

    /* eslint-disable react-hooks/exhaustive-deps */
    /* eslint-disable react-hooks/rules-of-hooks */

    import { useEffect, useState } from "react";

    export default function useDataFetch(url, options) {
    const opt = options ? options : {};
    const [responseData, setResponseData] = useState(null);
    const [error, setError] = useState(null);
    const [isLoading, setLoading] = useState(false);

    const fetchData = async () => {
        setLoading(true);

        try {
        const response = await fetch(url, {
            ...opt,
            method: "GET",
            headers: {
            "Content-Type": "application/json",
            "Accept": "application/json",
            ...opt?.headers,
            },
        });
        const data = await response.json();
        setResponseData(data);
        } catch (error) {
        setError(error);
        } finally {
        setLoading(false);
        }
    };

    useEffect(() => {
        fetchData();
    }, [url, options]);

    const refetch = () => {
        fetchData();
    };

    return { responseData, error, isLoading, refetch };
    }

Get Started

After initializing the hook into your app

Importing the Hook

    import useDataFetch from "hooks/useDataFetch";

Setting up the URL and Options

Define the URL for the API endpoint and any necessary options for the fetch request.

    const url = "http://localhost:8080/api/data";

    const options = {
    headers: {
        "Content-Type": "application/json",
        "Authorization": "Bearer wsvhvccmnm"
    }
    };

Order of Handling the Returned items

• Handle Loading State First
• Handle Errors
• Display or Use Data

Handling Loading State

Check if the loading state is active and display a loading indicator.

    if (isLoading) {
    //do sth incase resource is still loading..
    return <div>Loading...</div>;
    }

Handling Errors

Check if an error occurred and handle it accordingly.

    //do sth incase an error is caught ...
    if (error) {
    return <div>Error: {error.message}</div>;
    }

Displaying Data

If loading is complete and no errors occurred, display the fetched data.

    //do sth when the action is complete
    return (
    <>
        {responseData && responseData.map((item) => (
        <div key={item.id}>{item.name}</div>
        ))}
    </>
    );

sample complete usage of the hooks

    import React from "react";
    import useUpdateData from "hooks/useUpdateData";

    const DataUpdatingComponent = () => {

    const userId="1003"
    const url = `http://localhost:8080/api/data/${userId}`;
    
    //options could be empty but url can't be null/empty
    const options = {
        headers: {
        //   "Content-Type": "application/json", --by default this is the set
        "Authorization": "Bearer wsvhvccmnm"
        }
        //...more otions
    };

    const { responseData, error, isLoading, updateData } = useUpdateData(url, options);
    //your handle update function
    const handleUpdate = () => {
        const updatedData = {
        // the data/ fields you want to update
        name:"John"
        email: "[email protected]"
        };
        //call the upData method from the hook and pass in the updated data object
        updateData(updatedData);
    };
    //handle loading state
    if (isLoading) {
        return <div>Loading...</div>;
    }
    //handle an error if its caught
    if (error) {
        return <div>Error: {error.message}</div>;
    }
    //do sth with the responseData returned
    if(responseData.status.ok){
        toast.success("item updated successfully")
    }
    return (
        <>
        //the rest of the app
        <button onClick={handleUpdate}>Update Data</button>
        // the rest of the app
        </>
    );
    };

    export default DataUpdatingComponent;

Created By

created by Newton for reusability.