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私は反応成分をJSON配列から引き出しました。これには、ユーザーが製品の量を選択できる入力が含まれています。私の現在の問題は、すべての製品価格にその数量を掛けて合計に出力する方法が必要だということです。私は各コンポーネントのためにこれを達成することができましたが、量が変更されたときに実際に更新する必要があります。ここでの難しさは、配列内の一部の値が周辺機器として分類されない可能性があるため、含まれないことです。合計の配列値に反応成分の入力値を掛けたものを返します。
私は反応がかなり新しいので、誰かが解決策を提案できることを期待しています。アドバイスをいただければ幸いです。 、そのまま
私のコードは、このコードはまた、別個の構成要素
var productSort = productdata.data.products;
productSort.sort(function(a, b){return a.id - b.id});
私のJSON値の例から、式プル
import React, { Component } from "react";
import "./App.css";
import productdata from "./catalog.json";
import productSort from "./OrderDetails";
class App extends Component {
constructor(props) {
super(props);
this.state = {
BundleVal: "",
ProductCounter: [],
TotalCounter: [],
PeripheralCounter: 0,
PriceCounter: 0
};
}
updateBundle = val => {
this.setState({
BundleVal: val
});
};
updateQuantity = e => {
var pCounter = this.state.ProductCounter;
var el = parseInt(e.target.id.split("_")[1], 10);
pCounter[el] = parseInt(e.target.value, 10);
this.setState({ ProductCounter: pCounter });
};
render() {
const BundleProducts = [].concat(productSort).map((item, i) =>
<div key={item.id}>
{item.id} <br />
{item.name} <br />
{item.description} <br />
Installation: {item.price.installation} <br />
Monthly: {item.price.recurring} <br />
<input
type="number"
onChange={this.updateQuantity}
value={this.state.ProductCounter[item.id] || 0}
id={"product_" + item.id}
/>
<br />
{this.state.ProductCounter[item.id] || 0}<br />
Installation Total: £{parseFloat(this.state.ProductCounter[item.id] * item.price.installation, 10).toFixed(2)}
<br />
Monthly Total: £{parseFloat(this.state.ProductCounter[item.id] * item.price.recurring, 10).toFixed(2)}
<br />
<hr />
</div>
);
this.state.PeripheralCounter = this.state.ProductCounter
.filter(function(qty, pid) {
pid = String(pid);
for (var i = 0; i < productSort.length; i++) {
var p = productSort[i];
if (p.isPeripheral === true && p.id === pid) {
return true;
}
}
return false;
})
.reduce(function(count, carry) {
return count + carry;
}, 0);
let bname = null;
let maxperipherals = null;
if (this.state.BundleVal === "1") {
bname = productdata.data.bundles[0].name;
maxperipherals = productdata.data.bundles[0].maximumPeripherals;
} else if (this.state.BundleVal === "2") {
bname = productdata.data.bundles[1].name;
maxperipherals = productdata.data.bundles[1].maximumPeripherals;
} else if (this.state.BundleVal === "3") {
bname = productdata.data.bundles[2].name;
maxperipherals = productdata.data.bundles[2].maximumPeripherals;
} else if (this.state.BundleVal === "4") {
bname = productdata.data.bundles[3].name;
maxperipherals = productdata.data.bundles[3].maximumPeripherals;
} else {
bname = null;
}
return (
<div>
<h2>Order</h2>
Chosen Bundle: {bname}
<br />
Number of Peripherals: {this.state.PeripheralCounter}
<br />
Maximum Number of Peripherals: {maxperipherals}
<br />
Peripherals Installation Total: {}
<br />
<Bundle updateBundle={this.updateBundle} />
<h3>Products</h3>
{BundleProducts}
</div>
);
}
}
class Bundle extends React.Component {
constructor(props) {
super(props);
this.state = {
BundleVal: ""
};
}
updatebundle = e => {
this.props.updateBundle(e.target.value);
this.setState({ BundleVal: e.target.value });
};
render() {
return (
<div>
<h4>Bundle</h4>
<input
type="radio"
value="1"
onChange={this.updatebundle}
checked={this.state.BundleVal === "1"}
/>
{" "}Indoor Camera RAPID
<input
type="radio"
value="2"
onChange={this.updatebundle}
checked={this.state.BundleVal === "2"}
/>
{" "}Alarm Only RAPID
<input
type="radio"
value="3"
onChange={this.updatebundle}
checked={this.state.BundleVal === "3"}
/>
{" "}Outdoor Camera RAPID
<input
type="radio"
value="4"
onChange={this.updatebundle}
checked={this.state.BundleVal === "4"}
/>
{" "}Build Your Own Bundle
</div>
);
}
}
class Product extends React.Component {
constructor(props) {
super(props);
this.state = {
ProductVal: ""
};
}
updateproduct = e => {
this.props.updateProduct(e.target.value);
this.setState({ ProductVal: e.target.value });
};
render() {
return (
<div>
<h4>Product</h4>
<br />
<input type="number" onChange={this.updateproduct} />
</div>
);
}
}
export default App;
未満で
{
"timestamp": 1502121471,
"data": {
"adverts": [],
"bundles": [{
"id": "1",
"name": "Bundle 1",
"description": "Bundle 1 Description",
"maximumPeripherals": 32,
"available": true,
"count": 0,
"price": {
"installation": "99.99",
"recurring": "23.99"
},
"image": {
"file": "bundle-one.png",
},
"products": ["1", "2", "3"]
}, {
"id": "2",
"name": "Bundle 2",
"description": "Bundle 2 Description",
"maximumPeripherals": 32,
"available": true,
"count": 0,
"price": {
"installation": "99.99",
"recurring": "23.99"
},
"image": {
"file": "bundle-two.png",
},
"products": ["1", "2", "2", "2", "2"]
}],
"products": [{
"id": "1",
"name": "Product 1",
"description": "Product 1 Description",
"maximumQuantity": 1,
"isPeripheral": false,
"isAvailable": true,
"price": {
"upfront": null,
"installation": "0.00",
"recurring": "0.00"
},
"image": {
"file": "product-one.png",
}
}, {
"id": "2",
"name": "Product 2",
"description": "Product 2 Description",
"maximumQuantity": null,
"isPeripheral": true,
"isAvailable": true,
"count": 0,
"price": {
"upfront": "60.00",
"installation": "9.60",
"recurring": "1.25"
},
"image": {
"file": "product-two.png",
}
}, {
"id": "3",
"name": "Product Three",
"description": "Product Three Description",
"maximumQuantity": null,
"isPeripheral": true,
"isAvailable": true,
"count": 0,
"price": {
"upfront": "132.00",
"installation": "9.60",
"recurring": "2.75"
},
"image": {
"file": "product-three.png",
}
}]
}
}