CODEWITHSUNDEEP
reactjsreact-hooksreact-contextreact-state-managementreact-memo
Dawood Trumboo
Dawood Trumboo

Reputation: 33

Unable to force render Context in React

I'm working on a React application that features a complex, multiple-page form. The form's data is managed through a context, where each page has its own set of state variables. One challenge I'm encountering is ensuring that when a user navigates away from the form, such as by clicking a link in the navigation bar, and subsequently returns, the form resets to the first page.

The structure involves a navigation bar with three links corresponding to different sections of the application. Let's say the user is on the second page of the form, clicks on one of the navigation links, and then returns to the form. In this scenario, I want the form to reset to the first page, with all the state variables in the context being cleared or set to their initial values. I've attempted to use the useMemo hook to memoize the context value, but I'm struggling to figure out how to trigger a complete reset of the form when returning to it. The goal is to force a re-render of the entire context, leading to the reset of all the states associated with the form.

How can I achieve this behavior effectively? Are there alternative approaches or best practices for managing the state of a multi-page form within a React context, especially when needing to enforce a reset upon returning to the form?

export const FormProvider = ({ children }) => {

  const [forceRender, setForceRender] = useState(false);
  const [page, setPage] = useState(1);
  const [nights, setNights] = useState(null);
  const [subPage, setSubPage] = useState(1)
  const [currentState, setCurrentState] = useState(null);
  const [isLoading,setIsLoading] = useState(false);
  const [states, setStates] = useState([]);
  const [arrivalDepartureList,setArrivalDepartureList] =useState([]);
  const toggleRender = ()=>{
    setForceRender(prevState => !prevState)
  }
  return (
    <FormContext.Provider
      value={{ 
    // FORM EXPORTS
        title, 
        page, setPage, 
        nights, setNights,
        subPage,setSubPage,
        travellerDetails, setTravellerDetails, 
        canSubmit, 
        handleChange, 
        disableBack, disableNext,
        currentState,setCurrentState,
        states,setStates,
        arrivalDepartureList,setArrivalDepartureList,
        days,setDays,
        isLoading,setIsLoading,

    // Force Render
    toggleRender,forceRender
      }}
    >
      {children}
    </FormContext.Provider>
  );
};

export default FormContext;

Upvotes: 1

Views: 53

Answers (1)

Dawood Trumboo
Dawood Trumboo

Reputation: 33

I was able to fix this issue by by creating a function where I reseted all the states of that context and exported that function from the context, and called that function whenever I needed to reset the context. In the above case, the created the following function:

 const forceRender = ()=>{
      
      setPage(1);
      setNights(null)
      setSubPage(1)
      setCurrentState(null)
      setIsLoading(false)
      setStates([])
      setArrivalDepartureList([])
      
     }
    return (
    <FormContext.Provider
      value={{ 
    // FORM EXPORTS
        page, setPage, 
        nights, setNights,
        subPage,setSubPage,
        currentState,setCurrentState,
        states,setStates,
        arrivalDepartureList,setArrivalDepartureList,
        isLoading,setIsLoading,
        
        //export force Render
        forceRender
    >
      {children}
      </FormContext.Provider>
      );
    };

     export default FormContext;

I also think this might not be an optimal solution because in a use case where there are multiple states in the context, I would've to write functions for each one of them to reset, so I think this is not a good practice. If someone finds a better solution to this, please do provide the solution for it.

Upvotes: 1

Related Questions