Mobile Technologies Web Technologies Digital Marketing Creative Design Career Talk Medical General Tech Interviews Internet Of Things

Embark on a journey of knowledge! Take the quiz and earn valuable credits.

Take A Quiz

Challenge yourself and boost your learning! Start the quiz now to earn credits.

Take A Quiz

Unlock your potential! Begin the quiz, answer questions, and accumulate credits along the way.

Take A Quiz

Popular Categories

All
Interview Questions
Question Bank
Quantitative Aptitude
Engineering
Govt Exams
Digital Marketing
Management
Interviews

Updating state object inside an array from child component

General Tech Bugs & Fixes 3 years ago

6.9K 4 0 0 0
author
Previous Next

User submissions are the sole responsibility of contributors, with TuteeHUB disclaiming liability for accuracy, copyrights, or consequences of use; content is for informational purposes only and not professional advice.

Answers (4)

Post Answer
profilepic.png
manpreet Tuteehub forum best answer Best Answer 3 years ago

 

First I want to apologize because I'm newbie using react, so for sure I'm doing something really messed up.

That said, I need to update a specific state at parent component from child component, i'm using a handler inside the parent component to handle all the state changes, but it doesn't seem to work when I have arrays and objects, also I can add objects into 'inpHotel' state, so far what I got:

Parent

state = {
    activeStep: 0,
    fade: false,
    inpDestino: null,
    inpPeriodo: null,
    inpHotel: [{
        "nomeHotel": null,
        "urlMenorPreco": null,
        "quartos":[]
    }],
    inpNome: null,
    inpEmail: null,
    inpCelular: null,
};

//Handle function
handleChange = input => e => {
    this.setState({ [input]: e.target.value });
};

Child

<Grid item xs={12}>
    <TextField
        defaultValue={values.inpHotel[length].quartos[i].categoriaQuarto}
        onChange={     
            handleChange(`inpHotel[${length}].quartos[${i}].categoriaQuarto`)
        }
    />
Grid>

EDIT 1

My state needs to look like this JSON

{
    "chCidade": 0,
    "dataCheckIn": "",  
    "dataCheckOut": "",  
    "nome": "",
    "sobrenome": "",
    "celular": "",
    "email": "",
    "hoteis":
    [
        {   
            "nomeHotel": "",
            "urlMenorPreco": "",
            "quartos":[{
                "categoriaQuarto": "",
                "menorPrecoDiaria": 0,
                "quantidadeAdulto": "",
                "criancas":[{"idade":0},{"idade":0}]
            },{
                "categoriaQuarto": "",
                "menorPrecoDiaria": 0,
                "quantidadeAdulto": 0,
                "criancas":[]
            }]
        },
        {
            "nomeHotel": "",
            "urlMenorPreco": "",
            "quartos":[{
                "categoriaQuarto": "",
                "menorPrecoDiaria": 0,
                "quantidadeAdulto": 0
                                                

                                                                                                        
                                                    
                                                

                                                

                                                    

                                                        
                                                            0
                                                            views 

                                                            
                                                            

                                                            0
                                                            shares
profilepic.png
manpreet 3 years ago

You are calling the function handleChange() directly and it will return undefined. So you are setting onChange event to undefined.You could use wrapper function

onChange={() => handleChange(`inpHotel[${length}].quartos[${i}].categoriaQuarto`)}

0 views   0 shares
profilepic.png
manpreet 3 years ago

You are calling the function handleChange() directly and it will return undefined. So you are setting onChange event to undefined.You could use wrapper function

onChange={() => handleChange(`inpHotel[${length}].quartos[${i}].categoriaQuarto`)}

0 views   0 shares
profilepic.png
manpreet 3 years ago

You are calling the function handleChange() directly and it will return undefined. So you are setting onChange event to undefined.You could use wrapper function

onChange={() => handleChange(`inpHotel[${length}].quartos[${i}].categoriaQuarto`)}

0 views   0 shares

No matter what stage you're at in your education or career, TuteeHUB will help you reach the next level that you're aiming for. Simply,Choose a subject/topic and get started in self-paced practice sessions to improve your knowledge and scores.

Similar Forum

Q

Which operating system you favour and why?

Q

What are the most popular tech portals in India?

Q

What are best technologies available today for education / aiding learning?

View All

Explore Other Libraries

Online Exams

Question Bank

Career News

Feeds

Full Forms

Dictionary

Interview Question

Gigs

Quotes

Lyrics

Videos

Courses

Blogs

Tutorials

Forum

Educators

Corporates

Tools

Related Searches

General Tech Bugs & Fixes

Important General Tech Links

Bugs & Fixes
Technology & Software
Learning Aids/Tools
QA/Testing