I have a React Redux Form which has a few required fields and has its initial values set with initialValues prop
The values initialize fine, but when I try to save the form it errors saying the field is required (even though there's a value in there). If I simply CLICK into the field then save again everything works fine!
I have tried every way I can find using initialize/reset/destroy/change/blur/etc to manually touch or set the field all to no avail
reduxForm({
form: 'formName',
touchOnChange: true,
touchOnBlur: true
}),
useEffect(() => {
if (initialValues && initialValues.field) {
change(field, value)
blur(field, value)
}
}, [initialValues])
and a whole slew of different options as above
Same behavior if I try to reset and re-init the form, or call change. If I just click into the field though then the validation passes as expected.
Also tried enableReinitialize: true but that didn't change the behavior either
initialValues is set via an async call which updates redux state var, I'm guessing this is the issue at hand. I've been unable to reproduce with any of the mvp sandbox examples.
The values are getting set just fine in the fields but it's like the validators just aren't checking the field after the initialValue is set unless the user performs a mouse click in them.
How can I tell the form there's already a value in there just check, without the user manually clicking into the field
-- some new info
If I manually touch and then blur the field ... the validation fails immediately instead of waiting for submit to be pressed, so it really must think there's no value in the input until there's a mouse click there
It looks like you are in need of a form validation. The below is a example form / form validation from https://redux-form.com/6.0.1/examples/submitvalidation/.
submit.js
import { SubmissionError } from 'redux-form'
const sleep = ms => new Promise(resolve => setTimeout(resolve, ms))
function submit(values) {
return sleep(1000) // simulate server latency
.then(() => {
if (![ 'john', 'paul', 'george', 'ringo' ].includes(values.username)) {
throw new SubmissionError({ username: 'User does not exist', _error: 'Login failed!' })
} else if (values.password !== 'redux-form') {
throw new SubmissionError({ password: 'Wrong password', _error: 'Login failed!' })
} else {
window.alert(`You submitted:\n\n${JSON.stringify(values, null, 2)}`)
}
})
}
export default submit
SubmitValidationForm.js
import React from 'react'
import { Field, reduxForm } from 'redux-form'
import submit from './submit'
const renderField = ({ input, label, type, meta: { touched, error } }) => (
<div>
<label>{label}</label>
<div>
<input {...input} placeholder={label} type={type}/>
{touched && error && <span>{error}</span>}
</div>
</div>
)
const SubmitValidationForm = (props) => {
const { error, handleSubmit, pristine, reset, submitting } = props
return (
<form onSubmit={handleSubmit(submit)}>
<Field name="username" type="text" component={renderField} label="Username"/>
<Field name="password" type="password" component={renderField} label="Password"/>
{error && <strong>{error}</strong>}
<div>
<button type="submit" disabled={submitting}>Log In</button>
<button type="button" disabled={pristine || submitting} onClick={reset}>Clear Values</button>
</div>
</form>
)
}
export default reduxForm({
form: 'submitValidation' // a unique identifier for this form
})(SubmitValidationForm)
Good luck!
This link explains the way to change the Text on Menu - https://github.com/marmelab/admin-on-rest/blob/master/docs/Resource.md#options
But I would like to know how to change the Text which is rendered on right side panel i.e. when one clicks on the drawer menu. I see that if my code is like this :
<Resource name="v2/posts" options={{ label: 'Posts' }} list={PostList} />
then the Title is rendered as V2/Posts List. How do I give a custom title ?
You have to provide the title prop to your PostList component, e.g.
<PostList {...props} title={'Your title'} >
...
Or you could make your custom title:
<PostList title={<PostTitle />} {...props} >
where PostTitle is:
const PostTitle = ({ record }) => {
return <span>My title</span>;
};
Is there anyway to do a if condition in the XML file of nativescript? (without angular)
if
<Card:CardView class="cardStyle" margin="10" elevation="40" radius="5">
<Slider value="18" minValue="5" maxValue="30" />
</Card:CardView>
else
<Card:CardView class="cardStyle" margin="10" elevation="40" radius="5">
<Label text="Example" class="h3" margin="10" />
</Card:CardView>
What you could do is use a boolean property (which in its get function has the condition you want) and bind it to the visibility of the CardView.
Looks like you can show/hide from the template file using visibility:
In XML file: ie. 'sample-page.xml'
<Button text="{{ isShowing ? 'Hide Me' : 'Show Me' }}" tap="toggleShowing"/> <!-- Notice missing interpolation in Button tag -->
<Label text="Showing Hidden Element" visibility="{{ isShowing ? 'visible' : 'collapsed' }}"/>
In Page file: ie. 'sample-page.ts'
let model = new ViewModel();
// Event handler for Page 'loaded' event attached in main-page.xml
export function pageLoaded(args: observable.EventData) {
const page = <Page>args.object;
page.bindingContext = model;
}
export function toggleShowing() {
model.set('isShowing', !model.get('isShowing'));
}
In View Model: ie. 'sample-view-model.ts'
isShowing:boolean = false;
The only way I found to do to do this was to use the navigatingTo event of the page:
export function navigatingTo(args: EventData) {
let page = <Page>args.object;
var myLayout = <StackLayout>page.getViewById("myLayout");
if (condition) {
let segmentedBar = new SegmentedBar;
...
myLayout.addChild(segmentedBar);
}
else {
let button: Button = new Button;
...
myLayout.addChild(button);
}
No possibility in the template file :-/
It can be done using ng-container.For example
<ng-container *ngIf="true">Your logic here....</ng-container>
I have a Kendo Grid and set row save event as onAthleteGridSave. I want to add a custom window to set something similar to confirm box. Here is code
function onAthleteGridSave(e)
{
e.preventDefault();
$("#AssignSport").data("kendoWindow").open();
$("#AssignSport").find(".assignsportandsave,.notassignsportandsave")
.click(function () {
if ($(this).hasClass("assignsportandsave")) {
e.model.AssignSportId = $('#AssignEventId').data('kendoDropDownList').value();
}
else if ($(this).hasClass("notassignsportandsave")) {
e.model.AssignSportId = "";
}
$("#AssignSport").data("kendoWindow").close();
})
}
<% Html.Kendo().Window()
.Name("AssignSport")
.Content(() =>
{ %>
...
<input type="submit" class="assignsportandsave" value="Assign Sport And Save" />
<input type="submit" class="notassignsportandsave" value="Not Assign Sport And Save" />
<input type="submit" value="Cancel" onclick="$('#AssignSport').data('kendoWindow').close();" />
...
<%})
The problem is after clicking button in $("#AssignSport").data("kendoWindow"), the program can not go to controller action for Grid which is due to e.preventDefault().
But if removing e.preventDefault(), then program will not wait after $("#AssignSport").data("kendoWindow").open() and immediately go to controller action.
So I want to know if there is a way to undo e.preventDefault() or how to make program wait at where kendo window is opened for button information. Thanks.
You can't undo it, but you can save manually after making your changes to the model by calling saveChanges(). So something like this inside your click handler should work:
e.sender.saveChanges();
$("#AssignSport").data("kendoWindow").close();
I have an angular app that contains a save button taken from the examples:
<button ng-click="save" ng-disabled="form.$invalid">SAVE</button>
This works great for client side validation because form.$invalid becomes false as user fixes problems, but I have an email field which is set invalid if another user is registered with same email.
As soon as I set my email field invalid, I cannot submit the form, and the user has no way to fix that validation error. So now I can no longer use form.$invalid to disable my submit button.
There must be a better way
This is another case where a custom directive is your friend. You'll want to create a directive and inject $http or $resource into it to make a call back to the server while you're validating.
Some pseudo code for the custom directive:
app.directive('uniqueEmail', function($http) {
var toId;
return {
restrict: 'A',
require: 'ngModel',
link: function(scope, elem, attr, ctrl) {
//when the scope changes, check the email.
scope.$watch(attr.ngModel, function(value) {
// if there was a previous attempt, stop it.
if(toId) clearTimeout(toId);
// start a new attempt with a delay to keep it from
// getting too "chatty".
toId = setTimeout(function(){
// call to some API that returns { isValid: true } or { isValid: false }
$http.get('/Is/My/EmailValid?email=' + value).success(function(data) {
//set the validity of the field
ctrl.$setValidity('uniqueEmail', data.isValid);
});
}, 200);
})
}
}
});
And here's how you'd use it in the mark up:
<input type="email" ng-model="userEmail" name="userEmail" required unique-email/>
<span ng-show="myFormName.userEmail.$error.uniqueEmail">Email is not unique.</span>
EDIT: a small explanation of what's happening above.
When you update the value in the input, it updates the $scope.userEmail
The directive has a $watch on $scope.userEmail it set up in it's linking function.
When the $watch is triggered it makes a call to the server via $http ajax call, passing the email
The server would check the email address and return a simple response like '{ isValid: true }
that response is used to $setValidity of the control.
There is a in the markup with ng-show set to only show when the uniqueEmail validity state is false.
... to the user that means:
Type the email.
slight pause.
"Email is not unique" message displays "real time" if the email isn't unique.
EDIT2: This is also allow you to use form.$invalid to disable your submit button.
I needed this in a few projects so I created a directive. Finally took a moment to put it up on GitHub for anyone who wants a drop-in solution.
https://github.com/webadvanced/ng-remote-validate
Features:
Drop in solution for Ajax validation of any text or password input
Works with Angulars build in validation and cab be accessed at formName.inputName.$error.ngRemoteValidate
Throttles server requests (default 400ms) and can be set with ng-remote-throttle="550"
Allows HTTP method definition (default POST) with ng-remote-method="GET"
Example usage for a change password form that requires the user to enter their current password as well as the new password.:
<h3>Change password</h3>
<form name="changePasswordForm">
<label for="currentPassword">Current</label>
<input type="password"
name="currentPassword"
placeholder="Current password"
ng-model="password.current"
ng-remote-validate="/customer/validpassword"
required>
<span ng-show="changePasswordForm.currentPassword.$error.required && changePasswordForm.confirmPassword.$dirty">
Required
</span>
<span ng-show="changePasswordForm.currentPassword.$error.ngRemoteValidate">
Incorrect current password. Please enter your current account password.
</span>
<label for="newPassword">New</label>
<input type="password"
name="newPassword"
placeholder="New password"
ng-model="password.new"
required>
<label for="confirmPassword">Confirm</label>
<input ng-disabled=""
type="password"
name="confirmPassword"
placeholder="Confirm password"
ng-model="password.confirm"
ng-match="password.new"
required>
<span ng-show="changePasswordForm.confirmPassword.$error.match">
New and confirm do not match
</span>
<div>
<button type="submit"
ng-disabled="changePasswordForm.$invalid"
ng-click="changePassword(password.new, changePasswordForm);reset();">
Change password
</button>
</div>
</form>
I have created plunker with solution that works perfect for me. It uses custom directive but on entire form and not on single field.
http://plnkr.co/edit/HnF90JOYaz47r8zaH5JY
I wouldn't recommend disabling submit button for server validation.
Ok. In case if someone needs working version, it is here:
From doc:
$apply() is used to enter Angular execution context from JavaScript
(Keep in mind that in most places (controllers, services)
$apply has already been called for you by the directive which is handling the event.)
This made me think that we do not need: $scope.$apply(function(s) { otherwise it will complain about $digest
app.directive('uniqueName', function($http) {
var toId;
return {
require: 'ngModel',
link: function(scope, elem, attr, ctrl) {
//when the scope changes, check the name.
scope.$watch(attr.ngModel, function(value) {
// if there was a previous attempt, stop it.
if(toId) clearTimeout(toId);
// start a new attempt with a delay to keep it from
// getting too "chatty".
toId = setTimeout(function(){
// call to some API that returns { isValid: true } or { isValid: false }
$http.get('/rest/isUerExist/' + value).success(function(data) {
//set the validity of the field
if (data == "true") {
ctrl.$setValidity('uniqueName', false);
} else if (data == "false") {
ctrl.$setValidity('uniqueName', true);
}
}).error(function(data, status, headers, config) {
console.log("something wrong")
});
}, 200);
})
}
}
});
HTML:
<div ng-controller="UniqueFormController">
<form name="uniqueNameForm" novalidate ng-submit="submitForm()">
<label name="name"></label>
<input type="text" ng-model="name" name="name" unique-name> <!-- 'unique-name' because of the name-convention -->
<span ng-show="uniqueNameForm.name.$error.uniqueName">Name is not unique.</span>
<input type="submit">
</form>
</div>
Controller might look like this:
app.controller("UniqueFormController", function($scope) {
$scope.name = "Bob"
})
Thanks to the answers from this page learned about https://github.com/webadvanced/ng-remote-validate
Option directives, which is slightly less than I do not really liked, as each field to write the directive.
Module is the same - a universal solution.
But in the modules I was missing something - check the field for several rules.
Then I just modified the module https://github.com/borodatych/ngRemoteValidate
Apologies for the Russian README, eventually will alter.
I hasten to share suddenly have someone with the same problem.
Yes, and we have gathered here for this...
Load:
<script type="text/javascript" src="../your/path/remoteValidate.js"></script>
Include:
var app = angular.module( 'myApp', [ 'remoteValidate' ] );
HTML
<input type="text" name="login"
ng-model="user.login"
remote-validate="( '/ajax/validation/login', ['not_empty',['min_length',2],['max_length',32],'domain','unique'] )"
required
/>
<br/>
<div class="form-input-valid" ng-show="form.login.$pristine || (form.login.$dirty && rv.login.$valid)">
From 2 to 16 characters (numbers, letters and hyphens)
</div>
<span class="form-input-valid error" ng-show="form.login.$error.remoteValidate">
<span ng:bind="form.login.$message"></span>
</span>
BackEnd [Kohana]
public function action_validation(){
$field = $this->request->param('field');
$value = Arr::get($_POST,'value');
$rules = Arr::get($_POST,'rules',[]);
$aValid[$field] = $value;
$validation = Validation::factory($aValid);
foreach( $rules AS $rule ){
if( in_array($rule,['unique']) ){
/// Clients - Users Models
$validation = $validation->rule($field,$rule,[':field',':value','Clients']);
}
elseif( is_array($rule) ){ /// min_length, max_length
$validation = $validation->rule($field,$rule[0],[':value',$rule[1]]);
}
else{
$validation = $validation->rule($field,$rule);
}
}
$c = false;
try{
$c = $validation->check();
}
catch( Exception $e ){
$err = $e->getMessage();
Response::jEcho($err);
}
if( $c ){
$response = [
'isValid' => TRUE,
'message' => 'GOOD'
];
}
else{
$e = $validation->errors('validation');
$response = [
'isValid' => FALSE,
'message' => $e[$field]
];
}
Response::jEcho($response);
}