I am using this module
import { MultiSelect } from "react-multi-select-component"
and creating form by this
const [selected_to2, setSelected_to2] = useState([]);
<MultiSelect
options={options2}
value={selected_to}
onChange={setSelected_to}
labelledBy="Select2"
/>
then I creating multiselect component with default value using this
selected_to2.push({
value: item?.Code,
label: item?.Name
})
but returning value with 4 time called in the multiselect form, any proper way to set default value of multiselect then also add and remove in multiselect item?
React state must updated by set function. Edit the value directly will not work.
So you need do
setSelected_to2(s => [...s, {
value: item?.Code,
label: item?.Name
}])
First of all you are updating state is a wrong way
Wrong way
selected_to2.push({
value: item?.Code,
label: item?.Name
})
Right way:
setSelected_to2([{
value: item?.Code,
label: item?.Name
}
])
Here's a quick example that I did might help you, remember your default value must be an array of selected values since it's a multiselect component.
JSX
import { useState } from "react";
import { MultiSelect } from "react-multi-select-component";
import "./App.css";
const options = [
{ label: "The Godfather", value: 1 },
{ label: "Pulp Fiction", value: 2 },
];
const App = ({ editMode = true }) => {
const [value, setValue] = useState(editMode ? [options[1]] : []);
return (
<div className="App">
<MultiSelect
options={options}
value={value}
onChange={(selectedValues) => setValue(selectedValues)}
labelledBy="Select2"
/>
</div>
);
};
export default App;
Related
I'm using the AntD tree and I have a react element that I want to pass as either an icon or a title because it has custom styling. Due to it being IP I can't share too much code, but my question is:
how can I pass a react element (see below i.e. generic name) as either a title or icon and have antD tree render it?
i.e. this is what I want to pass as a prop to the icon or title
import React from 'react';
const genericName = (props) => {
// code uses props to get some infor for Color
// cant share code due to proprietary reasons
// but it is not needed for this question
const colorHTML = getColor(Color);
return (
<div>
<div className={`colors from`}>${colorHTML}</div>
{pin}
</div>
);
};
export default genericName;
in my console you can see node.icon is a typeof react.element. I want to target that and just pass the prop into antD tree as either title or icon
i.e.
return (
<Tree
icon={node.icon}
/>
)
I've searched and similar answers were given before antD forbid the use of children and strictly allows treeData. All examples I see only use strings in titles/icons, but since antD documentation is very limited, I need to know if my use case is possible. Right now, for the life of me I can't understand why it doesn't populate.
Thank you in advance.
It should definitely work to put a JSX component as title within treeData. Take a look at this snippet, I added a Icon here in one of the titles:
import React from 'react'
import { RightCircleOutlined } from '#ant-design/icons'
type Props = {}
import { Tree } from 'antd';
import type { DataNode, TreeProps } from 'antd/es/tree';
const treeData: DataNode[] = [
{
title: <span>{<RightCircleOutlined />} parent</span>, //icon added here
key: '0-0',
children: [
{
title: 'parent 1-0',
key: '0-0-0',
disabled: true,
children: [
{
title: 'leaf',
key: '0-0-0-0',
disableCheckbox: true,
},
{
title: 'leaf',
key: '0-0-0-1',
},
],
},
{
title: 'parent 1-1',
key: '0-0-1',
children: [{ title: <span style={{ color: '#1890ff' }}>sss</span>, key: '0-0-1-0' }],
},
],
},
];
const Demo: React.FC = () => {
const onSelect: TreeProps['onSelect'] = (selectedKeys, info) => {
console.log('selected', selectedKeys, info);
};
const onCheck: TreeProps['onCheck'] = (checkedKeys, info) => {
console.log('onCheck', checkedKeys, info);
};
return (
<Tree
checkable
defaultExpandedKeys={['0-0-0', '0-0-1']}
defaultSelectedKeys={['0-0-0', '0-0-1']}
defaultCheckedKeys={['0-0-0', '0-0-1']}
onSelect={onSelect}
onCheck={onCheck}
treeData={treeData}
/>
);
};
export default Demo;
Hello dear community,
I want to create a very basic website for my school assignment.
I have a dropdown menu with a Select Component as its implementation. I need to access the selected value, which is a currency in my case, in order to update the information displayed on the page once a currency has been selected.
I am kind of frustrated since I wasn't able to find a helpfull solution to my relatively basic problem (I think it's basic :D)
My component class here:
import { Component } from "react";
import Select from 'react-select';
interface DropdownMenuProps {
values: [{}]
defaultValue: string
}
interface DropdownMenuState { }
/**
* Represents a Dropdown Menu
*/
export default class DropdownMenu extends Component<DropdownMenuProps, DropdownMenuState> {
render() {
return (
<div style={{ width: '120px' }}>
<Select id="dropdown-menu"
placeholder={this.props.defaultValue}
options={this.props.values}
// getOptionValue={(option) => option.value}
// getOptionLabel={(option) => option.label}
/>
</div>
)
}
}
This is how I create a dropdown menu compent:
<DropdownMenu defaultValue="Currency" values={[{ label: "EUR", value: "EUR" }, { label: "GBP", value: "GBP" }, { label: "USD", value: "USD" }]} ></DropdownMenu>
I'm glad for any tips :)
You have to use the onChange prop of react-select:
<select
id="dropdown-menu"
onChange={handleSelectChange}
>
and in this function you could handle the changes:
const handleSelectChange = (selectedVal) => console.log(selectedVal)
I recommend you using directly onChange and save it into a state:
1st:
Create state with the name you want:
const [selectValue, setSelectValue] = useState({});
2nd: Create options:
const options = [
{ label: "Tomate", value: 1 },
{ label: "Queso", value: 2 }
];
3rd: add method onChange in select and pass options:
const onChange = (ev) => {
setSelectValue(ev);
//console.log(ev);
console.log(selectValue);
};
<Select
id="dropdown-menu"
placeholder={"e"}
options={options}
onChange={onChange}
/>
I have created demo here:
https://codesandbox.io/s/ancient-pond-96h53?file=/src/App.js
I am pretty new to React and am trying to use React-Select for a simple dropdown menu.
When you selected an option it should display the value under it, for that I'm using the onChange function and the useState Hook, but everytime I select something, the whole page just turns white.
App.js
import "./App.css";
import Select from "react-select";
import { useState } from "react";
function App() {
const [selected, setSelected] = useState(0);
const options = [
{ value: "1", label: "a" },
{ value: "2", label: "b" },
{ value: "3", label: "c" },
];
return (
<div>
<Select placeholder="Choose one"
defaultValue={selected}
onChange={setSelected}
options={options}
/>
<h1>{selected}</h1>
</div>
);
}
export default App;
Any help is appreciated, thank you.
I've done a simple edit on your code:
When onChange fires you set the selected value with onChange={(e)=>setSelected(e.value)}
Here's a functional codesandbox.
If you inspect your console in the browser, you'll see the issue is coming from the h1 component. This is probably what you're trying to achieve:
<h1>{selected.value}</h1>
I found a way to solve this, however I don't know if this is the best solution.
I created a function handleChange
const handleChange = e => {
setSelected(e.value);
}
and added a value prop, and called the function with onChange
<Select placeholder="Choose one"
defaultValue={selected}
value={options.find(obj => obj.value === selected)}
onChange={handleChange}
options={options}
/>
I don't know why
<h1>{selected.value}<h1>
doesn't work, since it's practically the same what I'm doing in handleChange, right?
I have this code:
import React from "react";
import ReactDOM from "react-dom";
import Select from "react-select";
const optionsExample = [
{
code: "CLP",
country: "CLP",
minimumAmount: 10000
},
{
code: "USD",
country: "US",
minimumAmount: 25000
}
];
const handleChange = (newValue, actionMeta) => {
console.log("change newValue", newValue); // object changes but it's not selected the right one
};
const CustomControl = () => (
<Select
defaultValue={optionsExample[0]}
formatOptionLabel={({ code }) => code}
options={optionsExample}
onChange={handleChange}
/>
);
ReactDOM.render(<CustomControl />, document.getElementById("root"));
It doesn't work ok because react-select expect that the value of each object on the data array be named value. How can I pass data like in the example? I need that data has those properties, I can't change country to value.
Actually, I used the props formatOptionLabel to change the default label field from the object to code but I don't know how to do the same but for the value.
Demo with my code, with the problem:
https://codesandbox.io/s/react-select-formatoptionlabel-forked-deuw1?file=/index.js:0-756
This is working because each object has it's value field and that's what is expected by react-select
https://codesandbox.io/s/react-select-formatoptionlabel-forked-d9bdj
If you can't move the mountain, then walk around it.
use inline .map to convert your array of objects
const CustomControl = () => (
<Select
defaultValue={optionsExample[0]}
formatOptionLabel={({ code }) => code}
options={optionsExample.map(x => ({ value: x.country, label: x.code })}
onChange={handleChange}
/>
);
or better still use useMemo to create a new array, if your array changes
const selectOptions = useMemo(() => optionsExample.map(x => ({ value: x.country, label: x.code }),[optionsExample])
<Select
defaultValue={selectOptions[0]}
formatOptionLabel={({ code }) => code}
options={selectOptions}
onChange={handleChange}
/>
I use "react final forms" and "react select".
I've organized an interface and functionality works, but I have one thing which I don't like.
React select requires options in next format:
const options = [
{ value: 'chocolate', label: 'Chocolate' },
{ value: 'strawberry', label: 'Strawberry' },
{ value: 'vanilla', label: 'Vanilla' }
]
and the value also should be set as { value: 'chocolate', label: 'Chocolate' }.
But for me is strange to have in my model of data (and send to the server also) the value like this - { value: 'chocolate', label: 'Chocolate' }, because I need only 'chocolate'.
Easy way is format the object into a single value after the form will be saved and format back from single value to the object before the rendering of the element. I know how to do it outside of form, but in this case I should solve this problem again and again for each select element separately.
What I would like to do:
Find a way how to set value of the react select as single value, like 'chocolate' instead of object.
OR
Create a wrapper for react select component and format value there when it sets (it's easy) and when the form get the value from this field (this I don't know how to do).
I will appreciate any help.
Method 1
With strings:
import React, { useState } from "react";
import ReactDOM from "react-dom";
import Select from "react-select";
const data = ["1", "2"];
function SingleStringReactSelect() {
const [option, setOption] = useState();
return (
<section>
<Select
onChange={option => setOption(option)}
value={[option]}
getOptionLabel={label => label}
getOptionValue={value => value}
closeMenuOSelect={false}
options={data}
/>
</section>
);
}
Method 2:
Created example:
https://codesandbox.io/s/react-codesandboxer-example-z57ke
You can use map in options and with Wrapper like SingleValueReactSelect
import React, { Fragment, useState } from "react";
import Select from "react-select";
const data = ["chocolate", "strawberry", "vanilla"];
export function SingleValueReactSelect(props) {
const [selectedItem, setSelectedItem] = useState();
return (
<Select
{...props}
value={selectedItem}
onChange={item => {
setSelectedItem(item);
props.onChange(item.value);
}}
options={props.options.map(item => ({ label: item, value: item }))}
/>
);
}
export default function AppDemo() {
return (
<Fragment>
<p>SingleValueReactSelect Demo</p>
<SingleValueReactSelect
isClearable
isSearchable
options={data}
onChange={item => {
alert(item);
}}
/>
</Fragment>
);
}
You can transform/filter the object data once you are sending the form data to server or another component.
Setting the value of the react-select as a single value will not show it as selected in the React-Select.