React filter array of object based on select dropdown list value

Question

I have a search bar, a drowdown and a filtered list which currently works as it should, but what I want to do is replace 'name' in filterV.product.name with a value selected from a dropdown.

 const filterArray = ["name", "description", "condition", "purpose", "category"];

one of these values should replace name when the user selects it from the dropdown and searches with the filter on.

 {this.state.filteredContent.length > 0 ? this.state.filteredContent.filter((filterV) => {
                        return   filterV.product.name.toLowerCase().indexOf(this.state.searchValue.toLowerCase()) !== -1
                    }).map((item, index) => (
                        <div key={index}>
                            <ProductItem
                                goToLink={true}
                                delete={false}
                                edit={false}
                                remove={false}
                                duplicate={false}
                                item={item}
                                hideMore
                            />
                        </div>
                    )): null}

any help much appriciated.

also even though the filter function is working and displaying the list on screen correctly, when I console.log this.state.filteredContent the length never changes, any ideas how I can get the correct list of filtered objects?

the list comes throught redux props

 this.state = {
        searchValue: '',
        filterValue: '',
        filteredContent: props.productWithoutParentList.length > 0 ? props.productWithoutParentList : [],
    }

["name", "description", "condition", "purpose", "category"] is options of dropdown and product contains there properties? Would be a lot easier to understand if you could create a minimal reproducible example — T J
– T J, Commented May 7, 2021 at 18:00
Yes that is correct. I will try to create a reproducible example — Zinox
– Zinox, Commented May 7, 2021 at 19:02
Here is a codesandbox implementation codesandbox.io/s/beautiful-wind-owyqk?file=/src/Main.js is that helps. Thanks. — Zinox
– Zinox, Commented May 7, 2021 at 20:24
CodeSandBox Link codesandbox.io/s/beautiful-wind-owyqk?file=/src/Main.js — Zinox
– Zinox, Commented May 7, 2021 at 20:28

T J · Accepted Answer · 2021-05-07 20:33:34Z

1

You can update the filter using [] dynamic property access notation:

{this.state.filteredContent
        .filter((filterV) => {
          return (
            filterV.product[this.state.filterValue]
              .toLowerCase()
              .indexOf(this.state.searchValue.toLowerCase()) !== -1
          );
        })

Note that I've also set a default value of filterValue: "name"

answered May 7, 2021 at 20:33

T J

43.2k13 gold badges87 silver badges142 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Zinox Over a year ago

Any idea why once filtered the length of the state.filteredContent remains the same?

T J Over a year ago

@Zinox you're never really updating state.filteredContent, Array.filter() returns a new filtered array, you're using that one for rendering. It gets created and thrown away during the rendering process

T J Over a year ago

Do remember that if you decide to update it, you'll need a copy of original so that when filters reset, you can put everything back...

Zinox Over a year ago

Ofcouse. thank you for the reminder. :) I keep forgetting filter returns a new array

Collectives™ on Stack Overflow

React filter array of object based on select dropdown list value

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related