reactjs - React Formik use submitForm outside <Formik />

Question

Current Behavior

<Formik
    isInitialValid
    initialValues={{ first_name: 'Test', email: 'test@mail.com' }}
    validate={validate}
    ref={node => (this.form = node)}
    onSubmitCallback={this.onSubmitCallback}
    render={formProps => {
        const fieldProps = { formProps, margin: 'normal', fullWidth: true, };
        const {values} = formProps;
        return (
            <Fragment>
                <form noValidate>
                    <TextField
                        {...fieldProps}
                        required
                        autoFocus
                        value={values.first_name}
                        type="text"
                        name="first_name"

                    />

                    <TextField
                        {...fieldProps}
                        name="last_name"
                        type="text"
                    />

                    <TextField
                        {...fieldProps}
                        required
                        name="email"
                        type="email"
                        value={values.email}

                    />
                </form>
                <Button onClick={this.onClick}>Login</Button>
            </Fragment>
        );
    }}
/>

I'm trying this solution https://github.com/jaredpalmer/formik/issues/73#issuecomment-317169770 but it always return me Uncaught TypeError: _this.props.onSubmit is not a function

When I tried to console.log(this.form) there is submitForm function.

Any solution guys?

---

- Formik Version: latest - React Version: v16 - OS: Mac OS

Answer 1

Just for anyone wondering what's the solution via React hooks :

Formik 2.x, as explained in this answer

// import this in the related component
import { useFormikContext } from 'formik';

// Then inside the component body
const { submitForm } = useFormikContext();

const handleSubmit = () => {
  submitForm();
}

Keep in mind that solution only works for components inside a Formik component as this uses the context API. If for some reason you'd like to manually submit from an external component, or from the component the Formik is actually used from, you can actually still use the innerRef prop.

TLDR ; This context answers works like a charm if the component that you're submitting from is a child of a <Formik> or withFormik() component, otherwise, use the innerRef answer below.

Formik 1.5.x+

// Attach this to your <Formik>
const formRef = useRef()

const handleSubmit = () => {
  if (formRef.current) {
    formRef.current.handleSubmit()
  }
}

// Render
<Formik innerRef={formRef} />