Clear a field's value on input clear in react-final-form

Question

I\'m using a custom component with react-final-form. On input change it sets the value to the address field. But when the input is cleared it doesn

Answer 1

All the default callback are handle by the component. If you want to do a clear with a button click, you can create a custom component and use native callback methods do your thing.

onChange = (event) => {
  this.setState({
    address:event.target.value
  });
}

onClear = () => {
  this.setState({
    address:''
  });
}

<div>
  <Field name="address">
      <div>
        <input
          value={this.state.address}
          onChange={this.onChange}
        />
      </div>
  </Field>
  <button onClick={this.onClear}>Clear</button>
</div>

Answer 2

The problem is not with the react-final-form in your code, it is due to the react-da data, I have played a lot around your code within 1 day, and checked reset is working with fine with the react-final-form

Just update your render with this code and see reset is working absolutely fine. Yeah! the problem is with react da data. I am not sure about what it does due to less official information for this package.

 <div className="App">
      <h2>Dadata test</h2>
      <Form
        mutators={{
          clear: ([address], state, { changeValue }) => {
            changeValue(state, "address", () => undefined);
          }
        }}
        onSubmit={onSubmit}
        render={({ form, handleSubmit, pristine, invalid, values, errors }) => (
          <form onSubmit={handleSubmit} noValidate>
            <Field name="address" component="input" />
              {/* {props => (
                <div>
                  <ReactDadata
                    token="d19c6d0b94e64b21d8168f9659f64f7b8c1acd1f"
                    onChange={event =>
                      props.input.onChange !== undefined
                        ? props.input.onChange({ value: event })
                        : form.mutators.clear
                    }
                  />
                </div>
              )}
            </Field> */}
            <button type="submit" disabled={invalid}>
              Submit
            </button>
            <button type="button" onClick={form.reset}>
              Clear
            </button>
            <Fields names={["address"]}>
              {fieldsState => (
                <pre>{JSON.stringify(fieldsState, undefined, 2)}</pre>
              )}
            </Fields>
          </form>
        )}
      />
    </div>

Hope it will help you to resolve the problem.

Answer 3

You can just call form.change('address', undefined) at any time that you'd like to clear the value.