How to Create Custom Dropdown Field Component with Redux-Form V6?

html-select, javascript, reactjs, redux-form

Solution

To make separate custom component that handles drop down select, I needed to include the 'input' props to connect it to the form reducer:

Custom Component:

/**
*
* DropDownSelect
*
*/

import React from 'react';

import styles from './styles.css';

class DropDownSelect extends React.Component { // eslint-disable-line react/prefer-stateless-function

  renderSelectOptions = (person) => (
    <option key={person} value={person}>{person}</option>
  )

  render() {
    const { input, label } = this.props;
    return (
      <div>
        {/* <label htmlFor={label}>{label}</label> */}
        <select {...input}>
          <option value="">Select</option>
          {this.props.people.map(this.renderSelectOptions)}
        </select>
      </div>
    );
  }
}

// function DropDownSelect(person) {
//   return (
//     <option key={person} value={person}>{person}</option>
//   );
// }

DropDownSelect.propTypes = {
  people: React.PropTypes.array,
  input: React.PropTypes.object,
  label: React.PropTypes.string,
};

export default DropDownSelect;

Field:

      <div className="form-group">
        <label htmlFor="dropDownSelect">Select an Option</label>
        <Field
          name="dropDownSelect"
          // component="select"
          label="dropDownSelect"
          component={DropDownSelect}
          people={people}
          className="form-control"
        >
          {/* {people.map(DropDownSelect)} */}
        </Field>
      </div>

Problem

I've got an app that will be form-heavy, and I'd like as much control as possible, while using as few dependencies as I can. To do so, I'd like to take advantage of redux-form v6's custom Field component API and make a bunch of custom components that I can drop in at will. One of these components is a drop down select. The problem is the custom drop down component does not connect to state, even though it renders OK. In the docs, the examples accomplish this like: ``` <Field name="favoriteColor" component="select"> <option></option> <option value="#ff0000">Red</option> <option value="#00ff00">Green</option> <option value="#0000ff">Blue</option> </Field> ``` I'm looking for a plug-and-play approach where I can drop in a component, and feed into the props an array of data: Form.js: ``` <div className="form-group"> <label htmlFor="dropDownSelect">Select an Option</label> <Field name="dropDownSelect" component={DropDownSelect} people={people} className="form-control" > </Field> </div> ``` DropDownSelect.js: ``` import React from 'react'; import styles from './styles.css'; class DropDownSelect extends React.Component { // eslint-disable-line react/prefer-stateless-function renderSelectOptions = (person) => { return ( <option key={person} value={person}>{person}</option> ); } render() { return ( <select> {this.props.people.map(this.renderSelectOptions)} </select> ); } } export default DropDownSelect; ``` When I check Redux DevTools, the field's value never populates when interacting with the dropdown: I picked a value for both fields, but only 'effDate' populates a value, while 'dropDownSelect' remains as a registered field with no value. Edit: Based off the example, I guess the way to go about this is like: ``` function DropDownSelect(person) { return ( <option key={person} value={person}>{person}</option> ); } export default DropDownSelect; <div className="form-group"> <label htmlFor="dropDownSelect">Select an Option</label> <Field name="dropDownSelect" component="select" // component={DropDownSelect} // people={people} className="form-control" > {people.map(DropDownSelect)} </Field> ``` This works for now, though it would be ideal if I could implement this as a completely separate component (as outlined in the initial question), so I can take advantage of lifecycle hooks in the case the field will depend on other fields.

Original source