[英]on submit button click, execute function then submit form react.js
我有一個訂單表格,目前接受用戶輸入並在提交時將其發布到 dynamo db 表中。
現在,這就是“提交”按鈕所做的一切。
我希望點擊后根據用戶輸入計算價格,隱藏表單,使用“接受和安排”按鈕顯示價格,然后發布到 dynamo db。
-----------------I am very new to to react js so I apologize if my code is sloppy. -------------------
我想我的 function 來處理計算看起來像下面這樣,因為價格是基於以 500 為增量的物業面積。
let base_price = 149.99;
if(sqft > 2000){
let overage = sqft - 2000;
let percentage = Math.ceil(overage % 500) * 10;
base_price += base_price * percentage;
}
現在這是我當前的訂單代碼:
import React, { Component } from "react";
import { InputGroup, Row, Form, Col, FormGroup, FormControl, ControlLabel } from "react-bootstrap";
import LoaderButton from "../components/LoaderButton";
import config from "../config";
import { API } from "aws-amplify";
export default class OrderForm extends Component {
constructor(props) {
super(props);
this.state = {
isLoading: null,
streetAddress: "",
streetAddress2: "",
city: "",
state: "",
zipCode: "",
propertySqft: "",
packageSelected: this.props.location.state,
};
}
validateForm() {
return this.state.streetAddress.length > 0;
return this.state.streetAddress2.legnth >= 0;
return this.state.city.length > 0;
return this.state.state.length > 0;
return this.state.zipCode.length > 0;
return this.state.propertySqft.length > 0;
return this.state.packageSelected.length > 0;
}
handleChange = event => {
this.setState({
[event.target.id]: event.target.value,
});
}
handleSubmit = async event => {
event.preventDefault();
this.setState({ isLoading: true });
try {
await this.createJob({
streetAddress: this.state.streetAddress,
streetAddress2: this.state.streetAddress2,
city: this.state.city,
state: this.state.state,
zipCode: this.state.zipCode,
propertySqft: this.state.propertySqft,
packageSelected: this.state.packageSelected,
});
this.props.history.push("/Scheduled");
} catch (e) {
alert(e);
this.setState({ isLoading: false });
}
}
createJob(job) {
return API.post("dynamodbname", "/prapp", {
body: job
});
}
render() {
var centerText = {textAlign: "center"}
return (
<div className="NewJob">
<Form onSubmit={this.handleSubmit}>
<Form.Group controlId="packageSelected">
<Form.Label>
</Form.Label>
<InputGroup>
<InputGroup.Prepend>
<InputGroup.Text id="inputGroupPrepend">Package Selected:</InputGroup.Text>
</InputGroup.Prepend>{" "}
<Form.Control style={centerText} onChange={this.handleChange} plaintext readOnly defaultValue={this.props.location.state} />
</InputGroup>
</Form.Group>
<Form.Group controlId="streetAddress">
<Form.Label>Address 1</Form.Label>
<Form.Control onChange={this.handleChange} value={this.state.streetAddress} placeholder="Property Address" />
</Form.Group>
<Form.Group controlId="streetAddress2">
<Form.Label>Address 2</Form.Label>
<Form.Control onChange={this.handleChange} value={this.state.streetAddress2} placeholder="Apartment, studio, or floor" />
</Form.Group>
<Form.Row>
<Form.Group as={Col} controlId="city">
<Form.Label>City</Form.Label>
<Form.Control onChange={this.handleChange} value={this.state.city} placeholder="City" />
</Form.Group>
<Form.Group as={Col} controlId="state">
<Form.Label>State</Form.Label>
<Form.Control onChange={this.handleChange} value={this.state.state} as="select">
<option value="AL">State</option>
<option value="AL">Alabama</option>
<option value="AK">Alaska</option>
<option value="AZ">Arizona</option>
<option value="AR">Arkansas</option>
<option value="CA">California</option>
<option value="CO">Colorado</option>
<option value="CT">Connecticut</option>
<option value="DE">Delaware</option>
</Form.Control>
</Form.Group>
<Form.Group as={Col} controlId="zipCode">
<Form.Label>Zip</Form.Label>
<Form.Control onChange={this.handleChange} value={this.state.zipCode} placeholder="Zip Code" />
</Form.Group>
</Form.Row>
<Form.Group controlId="propertySqft">
<Form.Label>Square Feet</Form.Label>
<Form.Control onChange={this.handleChange} value={this.state.propertySqft} placeholder="1234" />
</Form.Group>
<Form.Group id="formGridCheckbox">
<Form.Check type="checkbox" label="I agree to terms and services" />
</Form.Group>
<LoaderButton
block
bsStyle="primary"
bsSize="large"
disabled={!this.validateForm()}
type="submit"
isLoading={this.state.isLoading}
text="Calculate Price"
loadingText="Calculating your price…."
/>
</Form>
</div>
);
}
}
那么我將如何使用 go 而不是 on submit 觸發 function 根據用戶輸入計算價格,隱藏表單,使用“接受和安排”按鈕顯示價格,然后發布到 dynamo db?
如果有人可以分享一些資源或關於我應該如何執行 go 的見解,那將非常感激!
計算調試器的圖像:
在 state 中,有一個名為totalPrice
的值,在 null 處初始化,並添加一個 function 在官方onSubmit
之前遇到。 它可能看起來像這樣。
checkPrice = () =>{
//YOUR PRICE EVAL BASED ON USER INPUT
this.setState({totalPrice: YOUR_PRICE_EVAL})
}
在您的渲染中,有一個條件,如果totalPrice
然后顯示價格和兩個按鈕( continue
,它將執行表單提交,或back
,它將執行setState({totalPrice: null})
並再次顯示表單。
{this.state.totalPrice ? (
<div>
Your price is {this.state.totalPrice}
<button onClick={this.handleSubmit}>Continue?</button>
<button onClick={()=>{this.setState({totalPrice: null})}}>Back to Eval</button>
</div>
) : (
<Form onSubmit={this.checkPrice}>
...
</Form>
這是一個快速代碼沙箱。 該代碼可能與您的代碼沒有 100% 匹配,但它應該足以為您指明正確的方向。
或者,您可以查看 Ant Design 的Popconfirm
組件。 基本上你將它包裹在任何將要被點擊的東西(即提交按鈕)並且在它提交任何東西之前,組件將呈現一個彈出窗口。 您可以使用“Your price is...”填充彈出窗口並計算最終價格。 然后傳遞道具onConfirm={YOUR_SUBMIT_FUNCTION} onCancel={()=>{this.setState({totalPrice: null})}}
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