How to pass props to a modal

Question

I have a shopping application where I map over some products and render them on screen. users can increase/decrease quantity. when the quantity gets to 1 and the user hits decre

Answer 1

I faced a similar scenario recently. I managed it using redux/global state as I had to keep track of many modals. Similar approach with local state

//****************************************************************************/

constructor(props) {

    super(props)


    this.state = {
      isModalOpen: false,
      modalProduct: undefined,
    }
}

//****************************************************************************/

render() {

    return (
        <h4> Bag </h4>
        {this.state.isModalOpen & (
          <Modal 
            modalProduct={this.state.modalProduct}
            closeModal={() => this.setState({ isModalOpen: false, modalProduct: undefined})
            deleteProduct={ ... }
          />
        )

        {bag.products.map((product, index) => (
        <div key={index}>
            <div>{product.name}</div>
            <div>£{product.price}</div>
            <div>
            <span> Quantity:{product.quantity} </span>
            <button onClick={() => this.props.incrementQuantity(product, product.quantity += 1)}> + </button>
            <button onClick={() => this.decrementQuantity(product)}> - </button> // <----
            </div>
        </div>
        ))}
    )
}

//****************************************************************************/

decrementQuantity(product) {

    if(product.quantity === 1) {
        this.setState({ isModalOpen: true, modalProduct: product })
    } else {
        this.props.decrementQuantity(product)
    }
}