How to change nested object values based on checkboxes?-CodePudding

I have a checkbox for filters of products. What I want is to change the value of checked when click from false to true or vice-versa. I have defined a handleChangeChecked function to perform this operation which takes two arguments.

 const [Filters, setFilters] = useState([
        {
            id: 'brand',
            name: 'Brands',
            options: [
                { value: 'Casio', label: 'Casio', checked: false },
                { value: 'Yamaha', label: 'Yamaha', checked: false },
            ],
        },
        {
            id: 'size',
            name: 'No of Keys',
            options: [
                { value: 32, label: '32 Keys', checked: false },
                { value: 37, label: '37 Keys', checked: false },
                { value: 44, label: '44 Keys', checked: false },
                { value: 49, label: '49 Keys', checked: false },
                { value: 61, label: '61 Keys', checked: false },
                { value: 76, label: '76 Keys', checked: false },
            ],
        }

    ]


const handleChangeChecked = (section, value) => {
    console.log(section,value)      //brand Casio  (if I click on Casio Checkbox)
}

How can I achieve this functionality?

CodePudding user response：

You have some other issues here in that the static data which does not change really shouldn't be in React state. Updating deep state is perfectly doable but also unnecessarily complex in this use case (unless there's more to it I don't know about).

However, maybe it comes from the server or something and that's why your example code does what it does -- so I'm going to ignore that for now in case.

To update deep like this I'd highly recommend using Immer. Its quite dirty without it because in React you have to do it by creating new state from the old one without mutating the original (which is a big React no-no). Immer takes that complexity away for you.

I'm also assuming the variable section is the same as the ID of each filter.

import produce from "immer"

// ... rest of code

const handleChangeChecked = (section, value) => {
    setFilters( produce((draft) => {
        const sectionToChange = draft.find((filter) => filter.id === section)
        const option = sectionToChange.options.find(option => option.value === value)
        option.checked = !option.checked
      }))
}