React - How to set default value in react-select

问题

I used react-select in my application for showing select box. below is code of my select.

<Select
       className="custom-form-control mb-2"
       name="organization_options"
       options={this.organizationOptions()}
       placeholder={false}
       onChange={this.handleChange.bind(this)}
       value={selectedValue === "" ? this.organizationOptions()[0] : selectedValue}
/>

Below are the options i already have in select box

0: {value: "62", label: "Dfdf"}
1: {value: "128", label: "Dfdfdsf"}
2: {value: "151", label: "Fgfdgdfh"}
3: {value: "121", label: "Hhhfas"}
4: {value: "55", label: "My Sensor_56"}
5: {value: "13", label: "New Org"}
6: {value: "44", label: "Org 2"}
7: {value: "148", label: "Testing App"}

I have the value from query string like value="55", if the value is present i want to show that selected value in select box .

I tried in 2 different ways which are shown as below code ,

selectedValue='55'
defaultValue={this.organizationOptions().find(op => {
   return op.value === selectedValue
})}

defaultValue={{value: "55", label: "My Sensor_56"}}

But no one works, Can somebody tell me How can i set defaultV alue if already have or don't show default value if i don't have selected value ?

回答1:

Here default value we are finding out in organization options and pass it as value in Select:

import React from 'react';
import Select from 'react-select';

export default class App extends React.Component {
  organizationOptions = () => {
    return [
       {value: "62", label: "Dfdf"},
       {value: "128", label: "Dfdfdsf"},
       {value: "151", label: "Fgfdgdfh"},
       {value: "121", label: "Hhhfas"},
       {value: "55", label: "My Sensor_56"},
       {value: "13", label: "New Org"},
       {value: "44", label: "Org 2"},
      {value: "148", label: "Testing App"}
    ]
  }

  render() {
    const selectedValue = "55"
    return (
      <Select
        value={this.organizationOptions().find(op => {
           return op.value === selectedValue
        })}
        onChange={this.handleChange}
        options={this.organizationOptions()}
      />
    );
  }
}

来源：https://stackoverflow.com/questions/52436805/react-how-to-set-default-value-in-react-select

标签

reactjs

react-select