The Execution of a Function Fails When Passed to a Functional Component

My functional component accepts a function called addEvent, which expects an event parameter. The problem arises when I try to call this function from props within another functional component, as the function does not seem to execute:

const onOk = () => {
  const { title, description, start_time, end_time, remind_time } = formStates;
  const event = { 
    title:title[0], 
    description:description[0], 
    start_time:start_time.toISOString(),
    end_time: end_time.toISOString(),
    remind_time: remind_time.toISOString()
  }
  props.addEvent(event);
  props.hideModal();
};

const ModalConductor = props => {
switch(props.modal.currentModal) {
    case EVENT_FORM_MODAL:
        return <EventsFormModal {...props} title="New Event" addEvent={addEvent}/> 

    default:
        return null;
}
};

Function Being Passed:

export const addEvent = (event) => dispatch => {
console.log(event);
axios
    .post('/api/events/', event)
    ...then(res => {
        dispatch({
            type: ADD_EVENT,
            payload: res.data
        });
    }).catch(err => console.log(err));
}

I have come across information in the React documentation suggesting that when passing functions to components, one should use

this.function = this.function.bind(this);
. However, there is no reference to this in a functional component and the documentation lacks examples. How can I resolve this issue? Any assistance would be greatly appreciated!

Answer №1

ModalConductor is a functional component in your code that accepts props as its input parameter. Instead of directly accessing addEvent, you should be using props.addEvent.

const ModalConductor = (props) => {
switch(props.modal.currentModal) {
    case EVENT_FORM_MODAL:
        return <EventsFormModal {...props} title="New Event" addEvent={props.addEvent}/> 

    default:
        return null;
}
};

It's important to note that as long as your function definition does not involve 'this', you do not need to worry about 'this' binding.

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