I'm trying to get the id,name, and value from Select field element of Material-UI react component.
This is my container:
//some code is removed to keep things simple
class MyContainer extends Component {
constructor(props) {
super(props);
}
render() {
return(
<MyComp onChange={this._onChange.bind(this)} />
);
}
_onChange(evt) {
console.log(evt.target);
console.log(evt.target.id); //blank
console.log(evt.target.name); //undefined
console.log(evt.target.value); //html value of selected option!
}
}
export default connect(select)(MyContainer);
in my presentational component:
import React, {Component} from 'react';
import Select from 'material-ui/SelectField';
import MenuItem from 'material-ui/MenuItem';
const someData = ["aaaa", "bbbb", "ccccc"];
class MyComp extends Component {
render() {
const {onChange} = this.props;
return (
<form >
<Select
value={this.props.test}
name={"test"}
id={"test"}
onChange={this.props.onChange}
hintText={"Select a fitch rating service"}>
{
someData.map((e) => {
return <MenuItem key={Math.random()} value={e} primaryText={e}/>
})
}
</Select>
</form>
);
}
}
Problem is that _onChange(evt)
is giving this values:
evt.id is blank
evt.name is undefined
evt.target.value is <div>whatever the selected value was</div>
It seems as though the passed argument to _onChange(evt)
is not the SELECT
but rather the option since when i print out evt.target
it gives <div>whatever the selected value was</div>
. anyone knows why? If i use a plain select field (not material-ui) then this works as expected (i.e. i can get the id,name, correct value of selected option). How do i get the target id, name..etc from onChange event of Material-UI Select component?
P.S i'm using the same _onChange
method for TextField component of material-ui and it works there. I've also tried:
_onChange = (event, index, value) => {
console.log(event.target.id); //blank
console.log(event.target.name); //undefined
console.log(index); //correct index
console.log(value); //correct value
};
This is an answer for latest version of Material UI and React (2020):
You need to have the name
property on your <Select>
element. That name value should correspond to the field's name in your object.
This should work (name
is set to the field you're trying to update):
<Select
labelId="demo-simple-select-outlined-label"
id="demo-simple-select-outlined"
name="taskType"
value={props.job.taskType || ""}
label="{props.label}"
onChange={props.onTaskTypeChange}
>
But this will not work (name is omitted). This will return evt.target.name = undefined
:
<Select
labelId="demo-simple-select-outlined-label"
id="demo-simple-select-outlined"
value={props.job.taskType || ""}
label="{props.label}"
onChange={props.onTaskTypeChange}
>
I'd keep it simpler using event.currentTarget
instead of event.target
.
In your event handler, you can access the attribute of interest from the element that triggered the event by:
_onChange(evt) {
console.log(evt.currentTarget.getAttribute("data-name");
console.log(evt.currentTarget.getAttribute("data-value");
}
thus calling .getAttribute
on the attribute name prepended by "data-"
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