How to Delete product has been seleted

Question

I am trying to delete a product, but it's doesn't show successful. I do not know how to get the id of that product to delete

My button onClick = {handleDelete} is import from component in other folder. I try to create handleDelete function, but I missing something in this case.

This is my code for that section

import React, { useState, useEffect } from "react";
import { Container, Row, Col, Table } from "react-bootstrap";
import Loading from "../../components/Loading";
import Button from "../../components/Button/index"
import firebaseApp from "../../api/config";

const ProductTableList = ({
  products,
  loading,
  fetchProductRequest
}) => {
  useEffect(() => {
    fetchProductRequest();
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);


const firebaseDb = firebaseApp.database();
const [currentId, setCurrentId] = useState("");

  if (loading) {
    return (
      <Container>
        <Row>
          <Col>
            <Loading />
          </Col>
        </Row>
      </Container>
    );
  }

 

  const handleDelete = (id) => {
    const productId = firebaseDb.ref().push().key;
    if (window.confirm("Are you sure to delete this record?")) {
      firebaseDb
        .ref("products")
        .child(`products/${productId}`)
        .remove((err) => {
          if (err) console.log(err);
          else setCurrentId("");
        });
    }
  }

  const handleUpdate = (event) => {
    //TODO
  }
  return (
    <Table striped bordered hover className="product-table">
      <thead>
        <tr>
          <th>No.</th>
          <th className="image">Image</th>
          <th>Name</th>
          <th>Category</th>
          <th>Price</th>
          <th>Description</th>
          <th>Action</th>
        </tr>
      </thead>
      <tbody>
        {!!products && products.length > 0 ? (
          products.map((product, index) => {
            return (
              <tr key={index}>
                <td>{index}</td>
                <td>{product.image}</td>
                <td>{product.name}</td>
                <td>{product.category}</td>
                <td>{product.price}</td>
                <td>{product.description}</td>
                <td>
                  <Button onClick={handleDelete} btnText="Delete" />&nbsp;
                  <Button onClick={handleUpdate} btnText="Update" />
                </td>
              </tr>
            );
          })
        ) :
          (
            <tr><td className="center-title">Product list is empty!</td></tr>
          )}
      </tbody>
    </Table>
  )
}

export default ProductTableList;

Can anyone help me? How do I delete the product that I have selected

Can anyone explain or support for me why? Thank you so much

Answer 1

Hooks rely on getting called the in the same order every time to work correctly. They cannot to be called conditionally.

However in your component if loading is true you return from the function early, thereby stopping the currentId useState from being called on some renders. This means you are calling the useState hook conditionally which is not allowed.

To fix this move the state call to be above the if (loading) { statement.