I am rendering a form with Blade, Laravel's server-side templating language. The default values for the form elements are assigned by Blade. There is no JavaScript involved until now. Now I want to implement a reset button.
When a user presses the reset button the form should be cleared. A simple HTML reset button is not sufficient as it would not reset the "value=something" default values to "null".
In other words:
<input type="text" name="fullname" value="John Doe">
is supposed to be
<input type="text" name="fullname" value="">
after the user pressed the reset button.
With JQuery I would do something like this:
$("body").find('form').find('input').val('');
How can I do it with vue.js? Adding av-model and setting the v-model properties to null interferes with the server side default values...
In general: would you suggest to add a DOM manipulating lib to the application for such "hybrid" use cases where vue.js does not control the data?
If you plan on using vue, forget about altering the dom, vue works around states so imagine your input is like this
<input type="text" v-model="test_input">
and when you change the variable test_input the input automaticly changes its value, so just set it to empty in a method.
<button #click="clear_form"> Clear </button>
<script>
export default {
data() {
return {
test_input : ''
}
},
methods:{
clear_form(){
this.test_input = '';
}
}
}
</script>
I ended up writing a reset-form button component. In this component I use plain Javascript to get all input, select, ... fields of the form identified by an id and reseted the values to ''.
I took this option as it was the fastest way to reset the form and I don't have to change anything (e.g. add props, change ajax calls) if my form changes.
Related
I'm trying to reset a form after I've added a value.
Form Code Snippet
<form [formGroup]="addAttributeForm" fxLayout="column">
<mat-form-field>
<input matInput formControlName="title" placeholder="Title" required>
<mat-error>This field is required</mat-error>
</mat-form-field>
</form>
In the component
onSubmit(form: FormGroup) {
// do work
form.reset();
}
What I'm observing:
The form values are set to empty.
But the validation messages are still displayed from mat-error.
I've tried form.markAsPristine(), form.markAsUntouched() and combining all three.
How can I reset the form so the mat-error is not displayed?
The form group has no "knowledge" about whether the actual HTML form has been submitted or not. It only keeps track of the form values/validity/enabled state. So resetting the form group does reset the values but not any state regarding whether the form has been submitted.
To do this, you need to get a hold of the FormGroupDirective and call resetForm() on it.
Form Code Snippet
<form [formGroup]="addAttributeForm" fxLayout="column">
<!-- ... -->
</form>
In the component
#ViewChild(FormGroupDirective) formDirective: FormGroupDirective;
onSubmit(form: FormGroup) {
// do work
this.formDirective.resetForm();
}
This solution works with me.
You need to do next:
formReset(form: FormGroup) {
form.reset();
Object.keys(form.controls).forEach(key => {
form.get(key).setErrors(null) ;
});
}
This reset the form and clear all error.
The only way I've been able to successfully do this is by setting a flag to hide the form when you want to reset it and then using a timeout to set that flag back to true. As far as I know, there is no built-in way to do this yet.
showForm = true;
reset(): void {
this.showForm = false;
setTimeout(() => this.showForm = true);
}
And then in the HTML on the form element use *ngIf="showForm".
Im working using vue.js 2.0 and Laravel 5.4 I would like to know if exits a better way to send data Controllers -> views without lost the value, overwrite by the v-model
Because after charge vue.js this take the value in data that is define in this way
data: {
ciudad:'',
}
If I try to do something like that
<input class="form-control" id="ciudad" name="ciudad" type="text" v-model="documento.ciudad" value="{{ $documento->ciudad }}" >
I lost the value sending by the controller
Vue really expects you to init data from the view model which then updates the view, however, you want to use data in the view to update the underlying model data.
I think the easiest approach to this is to write a directive that inits the value from the HTML, so you don't need to directly access the DOM:
Vue.directive('init', {
bind: function(el, binding, vnode) {
vnode.context[binding.arg] = binding.value;
}
});
It's a little abstract so it's worth looking at Directive Hook Arguments section of the docs.
This can then be used like:
<input v-model="ciudad" v-init:ciudad="'{{ old('ciudad') }}'">
Here's the JSFiddle: https://jsfiddle.net/v5djagta/
The easy way to do this for me was in this way:
Laravel Controller
$documento = ReduJornada::where("id_documento",$id)->first();
return view('documentos.redujornada')->with(compact('documento'));
Laravel View
<input class="form-control" id="ciudad" v-model="documento.ciudad" value="{{ old('ciudad', isset($documento->ciudad) ? $documento->ciudad : null) }}" >
Vue.js
data: {
ibanIsInvalid : false,
documento: {
ciudad: $('#ciudad').val(),
}
In this way I can use the same view to create and edit an object, using the same form, even use laravel validation without lost the data after refresh.
If you know a better way to do that please tell me... Thanks
You have to define your value first, for example :
$oldValue = $request->old('value');
and then pass it to vue component, define props and use it in v-model
<script>
export default {
props: {
$oldValue : String,
}
};
</script>
<template>
<input class="form-control" id="ciudad" name="ciudad" type="text" v-model="oldValue">
</template>
Having issue with form validation .
i want to submit the form only when form is valid.
but with the empty inputs and clicking on submit button is submitting the form although the inputs are empty.
<form name="equipmentForm" #f="ngForm" (ngSubmit)="f.form.valid && addEquipment()" validate>
Inputs be like this.
<input name="equimentId" class="text-input form-control" type="text" [(ngModel)]="model.equipmentNumber" pattern="^[0-9][0-9]{1,19}$" title="Equipment ID. can be upto 20 digits only.">
I cant post the whole code although.
this
f.form.valid is true from form initialization
wanted to acheive something like this
<div *ngIf="!model.equipmentModel && f.submitted" class="text-danger">
Please enter Equipment Model
</div>
So on submit i want to show this message instead of default browser's.
but this f.form.valid is goddamn true from default.
You should add required attribute to your input tags to, then as #Cobus Kruger mentioned, form will not be submitted untill it is filled.
However you can also give a try to pristine, dirty options, which allow you to check if the user did any changes to the form so in this case your condition may look like this:
<form name="equipmentForm" #f="ngForm" (ngSubmit)="f.form.valid && f.form.dirty ? addEquipment() : ''" validate>
and the input:
<input name="equimentId" class="text-input form-control" type="text" [(ngModel)]="model.equipmentNumber" pattern="^[0-9][0-9]{1,19}$" title="Equipment ID. can be upto 20 digits only." required />
In this case it will check if any changes were applied to the input, and submit the form if both conditions are met.
If you specify the required attribute on the input, then the form will not be submitted unless a value is filled in. But that only covers values that were not supplied and you may want to check for invalid values as well.
The usual way is to disable the submit button unless the form is valid. Like this:
<button type="submit" [disabled]="!f.form.valid">Submit</button>
The Angular documentation about form validation also shows this. Look near the bottom of the "Simple template driven forms" section
In function which you call on submit you can pass form as parameter and then check. In html you will need to pass form instance:
<form name="equipmentForm" #f="ngForm" (ngSubmit)="addEquipment(f)" validate>
In typescript:
addEquipment(form){
if(form.invalid){
return;
}
//If it is valid it will continue to here...
}
I have this piece of javascript code
<script language="javascript">
function editRecord(email){
window.open('CompleteProfileDisplay.jsp?email='+email);
f.submit();
}
</script>
My question is how to hide the email value in address bar while calling CompleteProfileDisplay.jsp page through window.open function.One more thing CompleteProfileDisplay.jsp accepting the email value as request.getParameter method.Please help me if anybody is having idea.
The open() method takes a second name parameter which you can use as the target of a post, so you can create a hidden form with a target, open about:blank with a the target name and submit that form.
Or you can have a form that submits to the special '_blank' target which also opens a window. Similarly you programmatically fill and submit the form.
Edit: I said '_new' which is wrong....
You can follow this outline to accomplish your goal:
Create a small form within your HTML, with its action property set to CompleteProfileDisplay.jsp, containing an input field named email, with a target of _blank, and a method of post.
Have your function set the value of the email input field of this form to the given email address and submit the form.
A popup window will open containing the same results as your original request, but the data (email address) will be submitted as a POST request without being visible in the URL.
Like this:
<!-- make sure this form isn't nested with another form in your page -->
<form action="CompleteProfileDisplay.jsp" target="_blank" method="post">
<input type="hidden" name="email" id="hiddenemail" />
</form>
<script>
function editRecord(email){
var e = document.getElementById('hiddenemail');
e.value = email;
e.form.submit();
}
</script>
(Your question does not show that you are customizing the popup window's appearance in any way, so I am not considering that in my answer.)
jQuery.validate stops my form from being submitted. I would like it to just show the user what is wrong but allow them to submit anyway.
I am using the jquery.validate.unobtrusive library that comes with ASP MVC.
I use jquery.tmpl to dynamically create the form and then I use jquery.datalink to link the input fields to a json object on the page. So my document ready call looks something like this.
jQuery(function ($) {
// this allows be to rebind validation after the dynamic form has been created
$("form").removeData("validator");
$("form").removeData("unobtrusiveValidation");
$.validator.unobtrusive.parse($("form"));
// submit the answers
$("form").submit(function(e) {
$("input[name=jsonResponse]").val(JSON.stringify(answerArray));
return true;
});
}
I note that there is an option
$("form").validate({ onsubmit: false });
but that seems to kill all validation.
So just to recap when my form is rendered I want to show all errors immediately but I don't want to prevent the submit from working.
So after some research (reading the source code) I found I needed to do 2 things
add the class cancel to my submit button
<input id="submitButton" type="submit" class="cancel" value="OK" />
This stops the validation running on submit.
To validate the form on load I just had to add this to my document ready function
$("form").valid();
Hope this helps someone else