I've got a React web app using bootstrap 4 and Reactstrap. I want to have several checkboxes in a toolbar and I can't figure out how to get anything out of the onChange event besides "on".
Here is my code that continues to write "on" to the console every time I click the checkbox. The checkbox does toggle on and off.
<li className="show-sessions">
<FormGroup check>
<Label check>
<Input
type="checkbox"
onChange={(e) => console.log(e.target.value)}
/>{" "}
<strong>Show Favorites</strong>
</Label>
</FormGroup>
</li>
Is there another way to make a checkbox in Reactstrap? The doc's are very limited.
you can check checked state rather than value; it is a boolean
<Input
type="checkbox"
onChange={(e) => console.log(e.target.checked)}
/>
Related
I'm working on a search UI where I have quite a few filters which I want as URL parameters when someone selects/checks the options. I've used the technique as advised on the Remix.run docs to come up with multiple forms within the filters. Each time a group of Filters gets submitted, the selected old parameters get disappeared. Heres my code,
<Panel header="Status" key="status">
<Form
name="search"
action='/search'
method="get"
onChange={(e) => submit(e.currentTarget, { replace: false })}
>
<ul>
<li>
<Checkbox
name="status"
value="buy_now"
defaultChecked={status.includes('buy_now')}
>
Buy Now
</Checkbox>
</li>
<li>
<Checkbox
name="status"
value="on_auction"
defaultChecked={status.includes('on_auction')}
>
On Auction
</Checkbox>
</li>
</ul>
</Form>
</Panel>
<Panel header="Price" key="price">
<Form name="search" action='/search' method="get">
<Select
name="blockchain"
value={
blockchain
? options.filter((a) => a.value === blockchain)
: undefined
}
options={options}
placeholder="Blockchain"
type="white"
/>
<div className="d-flex align-center price">
<TextInput
value={min ? min : undefined}
name="min"
placeholder="Min"
/>
<span>to</span>
<TextInput
value={max ? max : undefined}
name="max"
placeholder="Max"
/>
</div>
<button
onClick={(e) => {
e.stopPropagation()
submit(e.currentTarget, { replace: false })
}}
className="btn primary-btn btn-lg w-100"
>
Apply
</button>
</Form>
</Panel>
How Can I get around this to have all the parameters without having to manage them on my own using React state?
Edit:- I want the first filter to be submitted automatically and the latter to be submitted on a button click.
Bit of a UI of what I'm trying to achieve,
Answer: After investing enough time to look through for shortcuts, finally understood that it's not one of the magic that remix.run does. use something like formik and update the state imparatively.
When you submit a form, the only values included are the one under the submitted form. The values from any other form are not included (fortunately!).
So I'd use a single Form with all the inputs under it (checkboxes as well as text inputs).
Then instead of a onChange on the Form, you can add something like an onChange handler on the checkboxes and submit the form inside imperatively (using a ref click on the submit button or something, I think using a ref on the form you need to submit all values in the submit function so a button ref click may be simpler).
Keep in mind that if you want to "restore" the field values after submitting, you need to return them from the loader function like this:
// Loader function
const url = new URL(request.url);
return {
results: [...],
values: Object.fromEntries(url.searchParams.entries())
};
Then in the component, use values from useLoaderData:
<input type="text" name="max" defaultValue={values.max || ""}/>
Added benefit: if you come back to this page (by clicking browser back for example), your search parameters and search results are still there!
I actually put up a stackblitz for you but I lost all my changes :(
It seems like you could just keep all fields in a single form and submit that form when the submit button is pressed.
Then onChange, check if the target's name is 'status', and submit the form anyway.
export default function App() {
const submit = (form) => {
form.submit();
};
return (
<form
name="search"
action="/search"
method="get"
onChange={(e) => {
if (e.target.name === "status") {
submit(e.currentTarget);
}
}}
>
<fieldset>
<legend>status</legend>
<label>
<input type="checkbox" name="status" value="buy_now" />
buy_now
</label>
<label>
<input type="checkbox" name="status" value="on_auction" />
on_auction
</label>
</fieldset>
<fieldset>
<legend>price</legend>
<label>
<div>blockchain</div>
<select name="blockchain">
<option value="option_1">Blockchain Option 1</option>
<option value="option_2">Blockchain Option 2</option>
</select>
</label>
<label>
min <input type="number" name="min" />
</label>
<label>
max <input type="number" name="max" />
</label>
</fieldset>
<button type="submit">Apply</button>
</form>
);
}
demo
Note: not sure what your motivation is to want to separate this into separate forms, but I think the magic you're referring to is that server state, URLSearchParams, FormData and UI are all aligned because they are using the same underlying data using only common web APIs.
I am new to React.
I am using Bootstrap to render my page. All the other tags seem to be working apart from the InputGroup.Text. It doesn't render the id attribute of the text field. It looks as below if I inspect the element:
<input placeholder="Type your question here" class="form-control">
I have tried directly entering "1" as the id and that doesn't render either.
<InputGroup size="sm" className="mb-3">
<InputGroup.Prepend>
<InputGroup.Text id={ans.answerno}>{this.mapAlpha(ans.answerno)}</InputGroup.Text>
</InputGroup.Prepend>
<FormControl placeholder="Type your answer here" />
<Form.Check type="checkbox" id={ans.answerno} label="mark answer" />
</InputGroup>
I have checked the documentation online and this seems to me how it should work. Can anyone advise?
It seems like the id is located inside a span before the <input>.
Even checking the documentation rendered code
I have a react sign-up form. I want to set up an input (checkbox) that holds the value as some text - e.g:
<form onSubmit={this.validateStepTwo} id="registerForm">
<label htmlFor="short_bio">Tell the users a bit about yourself:</label>
<input type="textarea" name="short_bio" className="textarea-small"/>
<label htmlFor="bio_info">Tell the users who you are</label>
<input type="textarea" name="bio_info" className="textarea-large"/>
<label htmlFor="bio_exp">Tell the users what you did</label>
<input type="textarea" name="bio_exp" className="textarea-large"/>
<input type="checkbox" name="instructor" value="I want to be an instructor" />
<input type="submit" value="Register" className="submit"></input>
{this.state.errors !== null ? (
<h1 className="error">{this.state.errors}</h1>
) : ('')}
</form>
Where
<input type="checkbox" name="instructor" value="I want to be an instructor" />
should have a value of "I want to be an instructor" but it doesnt have anything.
I tried doing it like this:
<input ...>I want to be an instructor</input>
but that threw another error.
Is this a react thing or am i missing something in my code? Ive been on the computer for 13 hours so i wouldnt be surprised if i made a dumb mistake.
Checkbox input value is the one sent in the request and not the text that appears afterwards.
If you want it to be the text then do something like this
<input type="checkbox" name="instructor" value="instructor"> I want to be an instructor
I am trying to create a rock, paper and scissor game in react. I would assume that it makes sense to use a form for this, I would atleast use a form haven't it been for react.
I figured that the simplest way of doing this, would be three radio inputs and a submit.
However, since I want to use three pictures as the actual radio buttons. Would it even make sense to use a form since react aims to take the state out of the form. This is the point in my code where i realized that I might be on a sidetrack.
onChangeHandler = (event) => {
this.setState({ [event.target.name]: event.target.value });
}
render() {
return (
<div>
<div>
<form>
<input type="radio" value="Rock" name="gender" onChange={this.onChangeHandler} /> Rock
<input type="radio" value="Paper" name="gender" onChange={this.onChangeHandler} /> Paper
<input type="radio" value="Scissor" name="gender" onChange={this.onChangeHandler} /> Scissor
<input type="submit" value="Submit" onClick = () => {submit()}/>
</form>
</div>
<div>
<img id="r" value="rock" src="http://www.jerrylow.com/demo/rps/rock.svg" alt="a rock" />
<img id="p" value="paper" src="http://www.jerrylow.com/demo/rps/paper.svg" alt="a piece of paper" />
<img id="s" value="scissor" src="http://www.jerrylow.com/demo/rps/scissor.svg" alt="a scissor" />
</div>)
}
Should I use this form, even though the form serves no particular purpose. If yes, how should i integrate it with the img elements?
You have a few ways of going about it. You can forgo the form entirely and attach onClick listeners to each of the images that would modify the state when clicked and then have a button that when clicked would call your submit function.
Or, if you wish to retain the form, you could either wrap the radio buttons and images in labels, hide the radio buttons such that when the image is clicked, it would trigger the onChange. Or, you could specify a for prop on the label that matches the id of a radio button and have the image in that and it would behave as the previously described, something like
<input type="radio" id="myButton" onChange={handleChange} />
<label for="myButton"><img src="img.png" /></label>
I guess it really comes down to the solution you want because either way would be fine. I would personally prefer not using a form for this scenario purely because it's not that necessary and the code would be smaller.
In my react redux form, I have the following:
<fieldset className="form-group">
<legend>Radio buttons</legend>
{this.props.job_titles.map(jobTitle => (
<div className="form-check" key={jobTitle.id}>
<label className="form-check-label">
<Field
name="job_title_id"
component="input"
type="radio"
value={jobTitle.id}
/>
{' '}
{jobTitle.title}
</label>
</div>
))}
</fieldset>
This renders the radio buttons correctly, but when you click to select a radio button, the radio button never sets as selected. You can't select an option - the form is broken.
What's strange is if I update: value={jobTitle.id} to value="anything" then the radio buttons can be selected.
I'm not seeing anything in the redux form docs about radio buttons dynamically generated. What am I doing wrong?
Thanks
Convert value to String:
<Field
name="job_title_id"
component="input"
type="radio"
value={jobTitle.id.toString()}
/>
Set the checked property to a state or prop, then update that in the click handler.
<Field
onClick={
() => {
this.setState((prevState) => {
return {isChecked: !prevState.isChecked};
});
}
}
name="job_title_id"
component="input"
type="radio"
checked={this.state.isChecked}
value={jobTitle.id}
/>