How to validate multiple user inputs within just one popup using Vue-SweetAlert2 - vue.js

Question

As a coding training, right now I'm making a web page where you can click a "Create" button, which triggers a popup, where you are supposed to fill in 6 data inputs, whose input style varies like text, select etc. (See the code and the attached image below)
<template>
<v-btn class="create-button" color="yellow" #click="alertDisplay">Create</v-btn>
<br/>
<p>Test result of createCustomer: {{ createdCustomer }}</p>
</div>
</template>
<script>
export default {
data() {
return {
createdCustomer: null
}
},
methods: {
alertDisplay() {
const {value: formValues} = await this.$swal.fire({
title: 'Create private customer',
html: '<input id="swal-input1" class="swal2-input" placeholder="Customer Number">' +
'<select id="swal-input2" class="swal2-input"> <option value="fi_FI">fi_FI</option> <option value="sv_SE">sv_SE</option> </select>'
+
'<input id="swal-input3" class="swal2-input" placeholder="regNo">' +
'<input id="swal-input4" class="swal2-input" placeholder="Address">' +
'<input id="swal-input5" class="swal2-input" placeholder="First Name">' +
'<input id="swal-input6" class="swal2-input" placeholder="Last Name">'
,
focusConfirm: false,
preConfirm: () => {
return [
document.getElementById('swal-input1').value,
document.getElementById('swal-input2').value,
document.getElementById('swal-input3').value,
document.getElementById('swal-input4').value,
document.getElementById('swal-input5').value,
document.getElementById('swal-input6').value
]
}
})
if (formValues) {
this.createdCustomer = this.$swal.fire(JSON.stringify(formValues));
console.log(this.createdCustomer);
}
}
}
}
</script>
Technically, it's working. The popup shows up when the "create" button is clicked, and you can fill in all the 6 blanks and click the "OK" button as well. But I want to add some functionalities that check if the user inputs are valid, I mean things like
address should be within 50 characters
firstName should be within 20 characters
customerNumber should include both alphabets and numbers
and so on.
If it were C or Java, I could probably do something like
if(length <= 50){
// proceed
} else {
// warn the user that the string is too long
}
, but when it comes to validating multiple inputs within a single popup using Vue-SweetAlert2, I'm not sure how to do it, and I haven't been able to find any page that explains detailed enough.
If it were just a single input, maybe you could use inputValidor like this
const {value: ipAddress} = await Swal.fire({
title: 'Enter an IP address',
input: 'text',
inputValue: inputValue,
showCancelButton: true,
inputValidator: (value) => {
if (!value) {
return 'You need to write something!'
}
}
})
if (ipAddress) {
Swal.fire(`Your IP address is ${ipAddress}`)
}
, but this example only involves "one input". Plus, what this checks is just "whether an IP address has been given or not" (, which means whether there is a value or not, and it doesn't really check if the length of the IP address is correct and / or whether the input string consists of numbers / alphabets).
On the other hand, what I'm trying to do is to "restrict multiple input values (such as the length of the string etc)" "within a single popup". Any idea how I am supposed to do this?

Answer 1

Unfortunately the HTML tags to restrict inputs (e.g. required, pattern, etc.) do not work (see this issues),
so I find two work around.
Using preConfirm as in the linked issues
You could use preConfirm and if/else statement with Regex to check your requirement, if they are not satisfied you could use Swal.showValidationMessage(error).
const{value:formValue} = await Swal.fire({
title: "Some multiple input",
html:
<input id="swal-input1" class="swal-input1" placeholder="name"> +
<input id="swal-input2" class="swal-input2" placeholder="phone">,
preConfirm: () => {
if($("#swal-input1").val() !== "Joe"){
Swal.showValidationMessage("your name must be Joe");
} else if (!('[0-9]+'.test($("#swal-input2").val())){
Swal.showValidationMessage("your phone must contain some numbers");
}
}
});
Using Bootstrap
In this way Bootstrap does the check at the validation, you need to include class="form-control" in your input class and change a little your html code.
If some conditions fails, the browser shows a validation message for each fields, in the order they are in the html code.
const {value: formValue} = await Swal.fire({
title: 'Some multiple inputs',
html:
'<form id="multiple-inputs">' +
'<div class="form-group">' +
'<input type="text" class="form-control swal-input1" id="swal-input1" min=2 max=4 required>' +
'</div>' +
'<div class="form-group">' +
'<input type="text" class="form-control swal-input2" id="swal-input2" placeholder="Name" pattern="[A-Za-z]" required>' +
'</div>' +
'</form>',
});
I have tried both the solution, actually only with Bootstrap3 but it should work also with the latest release.