sveltekit-yup
v0.0.7
Published
Svelte component library using Yup for form validation.
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sveltekit-yup
Svelte component library using Yup for form validation.
An update has been made for the svelte-yup project sveltekit.
Installation
$ npm i sveltekit-yup --save-dev
$ npm i yup
Sample code
<script>
import * as yup from 'yup';
import {YupForm, YupMessage} from 'sveltekit-yup';
let schema = yup.object().shape({
name: yup.string().required().max(30).label("Name"),
email: yup.string().required().email().label("Email address"),
});
let fields = {email: "", name: ""};
let submitted = false;
let isValid;
function formSubmit(){
submitted = true;
isValid = schema.isValidSync(fields);
if(isValid){
alert('Everything is validated!');
}
}
</script>
<YupForm class="form" {schema} {fields} submitHandler={formSubmit} {submitted}>
<input type="text" bind:value={fields.name} placeholder="Name">
<YupMessage name="name" />
<input type="text" bind:value={fields.email} placeholder="Email address">
<YupMessage name="email" />
<button type="submit">Submit</button>
</YupForm>
Add isInvalid for making input border style.
Example:
<script>
...
import {YupMessage, isInvalid} from 'sveltekit-yup';
...
$: invalid = (name)=>{
if(submitted){
return isInvalid(schema, name, fields);
}
return false;
}
...
</script>
<input type="text" class:invalid={invalid("name")} bind:value={fields.name} placeholder="Name">
<style>
.invalid {
border-color: red !important;
}
</style>
All messages in one place
Example below to put all messages in one place by YupAllMessages
component.
import {YupAllMessages} from 'sveltekit-yup';
<YupAllMessages />
Custom Message color
<YupForm ... color="#b00020">
Components
| name | props | description |
| ------ | ------ | ------------- |
| YupForm
| schema
, fields
, submitHandler
, submitted
and color
| |
| YupMessage
| name
| Error message of a field name by name
prop. name should be the schema field name (no label name)
| YupAllMessages
| | Puts all field messages in one place |
Functions
isInvalid(schema:Object, name:String, fields:Object)
Example disable button until everything is validated
...
let btnDisabled = false;
$: if(submitted){
btnDisabled = true;
isValid = schema.isValidSync(fields);
if(isValid){
btnDisabled = false;
}
}
...
<button type="submit" disabled={btnDisabled}>Submit</button>
Author
Emrullah TUNCAY
License
MIT