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Saving Values to Backend from TextBoxes using React Flux Pattern

I have several text boxes and a save button
Each text box value is loaded using the following approach
{
this.getElement('test3lowerrangethreshold', 'iaSampling.iaGlobalConfiguration.test3lowerrangethreshold',
enums.IASamplingGlobalParameters.ModerationTest3LowerThreshold)
}
private getElement(elementid: string, label: string, globalparameter: enums.IASamplingGlobalParameters): JSX.Element {
let globalParameterElement =
<div className='row setting-field-row' id={elementid}><
span className='label'>{localeHelper.translate(label)}</span>
<div className="input-wrapper small">
<input className='input-field' placeholder='text' value={this.globalparameterhelper.getDataCellContent(globalparameter, this.state.globalParameterData)} />
</div>
</div>;
return globalParameterElement;
}
Helper Class
class IAGlobalParametesrHelper {
public getDataCellContent = (globalparameter: enums.IASamplingGlobalParameters, configdata: Immutable.List<ConfigurationConstant>) => {
return configdata?.find(x => x.key === globalparameter)?.value;
}
}
This works fine. Now the user is allowed to update these text values.And on click of save the changes should be reflected by calling a web api .
I have added an onlick event like this
<a href='#' className='button primary default-size' onClick={this.saveGlobalParameterData}>Save</a>
Now inorder to save the data i need a way to identify the text element which has changed.For that i have added an update method within the Helper class
public updateCellValue = (globalparameter: enums.IASamplingGlobalParameters, configdata: Immutable.List<ConfigurationConstant>,updatedvalue:string) => {
let itemIndex = configdata.findIndex(x => x.key === globalparameter);
configdata[itemIndex] = updatedvalue;
return configdata;
}
and return the updated configdata ,and i plan to call this method in the onchange event of every text box like this
<input className='input-field' placeholder='text' onchange={this.setState({ globalParameterData: this.globalparameterhelper.updateCellValue(globalparameter, this.state.globalParameterData, (document.getElementById(elementid) as HTMLInputElement).value})}
But this does not seem like a correct approach as there are number of syntactical errors. I initially got the data using an actioncreator like this.Please advice.
samplingModerationActionCreator.getGlobalParameters();
samplingModerationStore.instance.addListener(samplingModerationStore.SamplingModerationStore
.IA_GLOBAL_PARAMETER_DATA_GET_EVENT,
this.getGlobalParameterData);
}

Ionic 2 not updating UI

I have problem with Ionic 2 not updating my UI when I change a variable.
html:
<ion-card *ngFor="let event of mEvents (click)="onEventCardClick(event)">
<ion-card-content ion-item>
<span class="eventTitle">{{ event.title }}</span> <br/>
<span class="relativeDate">{{ event.getRelativeTimeString() }}</span>
<ion-badge item-end>{{ event.reservationsCount }}</ion-badge>
<ion-badge *ngIf="event.hasUnreadMessages" color="danger" item-end>{{ event.unreadMessagesCount }}</ion-badge>
</ion-card-content>
</ion-card>
end from ts file:
this.fcm.onNotification().subscribe((notification:NotificationData) => {
if(!this.navCtrl.isActive(this.viewCtrl))
return;
notification.event = JSON.parse(notification.event);
notification.reservation = JSON.parse(notification.reservation);
notification.reservation_message = JSON.parse(notification.reservation_message);
let eventId: number = notification.event.id;
for(let i=0; i<this.mEvents.length; i++) {
if(this.mEvents[i].id == eventId) {
this.mEvents[i].unreadMessagesCount++;
this.mEvents[i].hasUnreadMessages = true;
return;
}
}
});
The problem is, I send a push notification from my server. i receive message successfully and update corresponding object (Event). But this last ion-badge element in ion-card does not shows up. It is still "hidden". However if I interact with UI, it suddenly shows up.
How can I achieve instant UI update? I read in some articles about NgZone but half of them says that is should not be used and the other half says that I should use it ...

Use the ChangeDetectorRef. It detects changes in variables and updates the UI. Create the private ref:ChangeDetectorRef in the constructor then call this.ref.detectChanges() whenever you need to update the UI when your variable changes.

Salesforce Lightning Component will not update records via Apex call, freezes

Issue overview: Currently coding a Lightning Component to update records on a custom object. However, every time I trigger the update (via a ui:button), the page freezes and I don't see any errors in the debugger or console. Cannot for the life of me figure out why it won't work.
Context: The component has a number of dropdowns that are populated with records (with the label being the record name). Selecting a new value in the dropdown and hitting "Update" calls the below apex to change a custom field (Status__c = 'Ready') on the new selected item, and then updates the records that occur before it (Status__c = 'Complete). I do all of my security and update checks in another function during init, so you won't see that here (I can post the full code if needed). Just trying to get the update to work.
I would be eternally grateful if someone could show me the error of my ways :]. Always been a huge fan of stackoverflow and looking forward to contributing now that I finally signed up. Thanks for your time everyone!
Apex:
#AuraEnabled
public static void updateMilestones(String deployId,Boolean prodChanged,String newProdMile) {
if( prodChanged == true && newProdMile != null ) {
try {
decimal newProdStepNum;
List <Milestone__c> newReadyProdMile = New List<Milestone__c>();
for(Milestone__c mil1:[SELECT id, Status__c, Step_Order__c FROM Milestone__c
WHERE Deployment__c = :deployID
AND id = :newProdMile LIMIT 1]){
mil1.Status__c = 'Ready';
newProdStepNum = mil1.Step_Order__c;
newReadyProdMile.add(mil1);
}
List <Milestone__c> prodMilesComplete = New List<Milestone__c>();
for(Milestone__c mil2:[SELECT id, Type__C, Status__c FROM Milestone__c
WHERE Deployment__c = :deployID
AND Step_Order__c < :newProdStepNum
AND Type__c = 'Production'
AND Status__c != 'Complete'
AND Status__c != 'Revised']){
mil2.Status__c = 'Complete';
prodMilesComplete.add(mil2);
}
update newReadyProdMile;
update prodMilesComplete;
}
catch (DmlException e) {
throw new AuraHandledException('Sorry, the update did not work this time. Refresh and try again please!');
}
}
}
Javascript:
updateMilestones : function(component, event, helper) {
// update milestones server-side
var action = component.get("c.updateMilestones");
action.setParams({
deployId : component.get("v.recordId"),
newProdMile : component.find("prod-mile-select").get("v.value"),
prodChanged : component.get("v.prodChanged")
});
// Add callback behavior for when response is received
action.setCallback(this, function(response) {
var state = response.getState();
if (component.isValid() && state === "SUCCESS") {
// re-run the init function to refresh the data in the component
helper.milesInit(component);
// refresh record detail
$A.get("e.force:refreshView").fire();
// set Update Changed Milestones button back to disabled
component.find("updateButton").set("v.disabled","true");
// show success notification
var toastEvent = $A.get("e.force:showToast");
toastEvent.setParams({
"title": "Success!",
"message": "Milestones have been updated successfully."
});
toastEvent.fire();
}
});
// Send action off to be executed
$A.enqueueAction(action);
}
Component:
<aura:component controller="auraMilestonesController_v2"
implements="force:appHostable,flexipage:availableForRecordHome,force:hasRecordId,force:lightningQuickAction">
<ltng:require scripts="{!$Resource.lodash}" afterScriptsLoaded="{!c.doInit}"/>
<aura:attribute name="recordId" type="String" />
<aura:attribute name="prodMiles" type="Milestone__c[]"/>
<aura:attribute name="prodChanged" type="Boolean" default="false"/>
<!-- FORM -->
<div class="slds-col slds-col--padded slds-p-top--large" id="theform">
<form class="slds-form--stacked">
<!-- UPDATE BUTTON -->
<div class="slds-form-element">
<ui:button aura:id="updateButton" label="Update Changed Milestones" press="{!c.updateMilestones}"
class="slds-button slds-button--brand slds-align--absolute-center" disabled="true"/>
</div>
<hr style="color: #005fb2;background-color: #005fb2;"/>
<!-- PRODUCTION -->
<div aura:id="prod-section">
<div class="slds-form-element">
<label class="slds-form-element__label" for="milestone">Production Milestone</label>
<div class="slds-form-element__control">
<div class="slds-select_container">
<ui:inputSelect aura:id="prod-mile-select" class="slds-select" change="{!c.prodChange}">
<option value="" >--Select One--</option>
<aura:iteration items="{!v.prodMiles}" var="m">
<aura:if isTrue="{!m.Status__c == 'Ready'}">
<option value="{!m.id}" selected="true">{!m.Name} ({!m.User_Name__c})</option>
</aura:if>
<aura:if isTrue="{!m.Status__c == 'Not Ready'}">
<option value="{!m.id}">{!m.Name} ({!m.User_Name__c})</option>
</aura:if>
</aura:iteration>
<option value="completeProdMile" id="completeProdMile">All Production Milestones Complete</option>
</ui:inputSelect>
</div>
</div>
</div>
<div class="slds-form-element">
<label class="slds-form-element__label" for="description">Description</label>
<div class="slds-textarea">
<aura:iteration items="{!v.prodMiles}" var="m">
<aura:if isTrue="{!m.Status__c == 'Ready'}">{!m.Description__c}</aura:if>
<!-- <aura:set attribute="else">All production milestones have been completed.</aura:set> -->
</aura:iteration>
</div>
<hr style="color: #005fb2;background-color: #005fb2;"/>
</div>
</div>
<!-- END PRODUCTION -->
</form>
</div>
<!-- / FORM -->
</aura:component>

I believe the issue is that you have fallen into the all too common trap of naming both a client side and a server side controller method the same (updateMilestones in this case). Try changing the name of either to make them unique and I expect that will get you running.
Yes, there is a bug on this and many of us have been making a very loud noise about getting it fixed!
Also we have a very active Salesforce specific Stack Exchange forum over here https://salesforce.stackexchange.com/ that will get more attention - especially if you tag your posts with lightning-components (e.g. I have my account configured to send me an email alert on every post tagged with lightning-components, locker-service, etc).

That might be javascript causing the error.As it's difficult to solve without knowing the error, I would suggest you debug the error.
Turn on debug mode.
a. From Setup, click Develop > Lightning Components.
b. Select the Enable Debug Mode checkbox.
c. Click Save.
In Chrome Developer Tools, check the "Pause on Caught Exceptions" checkbox in the Sources tab. This can often help finding the source of an issue. Other browsers may have similar options.
Add a debugger statement if you want to step through some code.
debugger;
This is useful when you have a rough idea where the problem might be happening.
debugger
https://developer.salesforce.com/docs/atlas.en-us.lightning.meta/lightning/debug_intro.htm

Set flash message after redirect in angularjs

I am just starting with Angular js. I have a doubt in that. I want to set flash messsage after redirect.
In my case, I have a form and am saving the data through http requst. In the success function I put window.location(). It is another page. I want to set a flash message in that page.
js
$scope.Save_Details = function (id)
{
$http.post(base_url+"sur/sur/save_data/"+id,{data:$scope.Surdata}).
success(function(response) {
// $scope.successTextAlert = "Saved";
// $scope.showSuccessAlert = true;
window.location = "#/surpage/nextpage?show_message= true";
});
}
new update
var messageFlag = $location.search().show_message;
if(messageFlag && messageFlag === 'true'){
alert(messageFlag);
$scope.successTextAlert = "Saved";
$scope.showSuccessAlertMsg = true;
}
view
<div class="alert alert-success" ng-show="showSuccessAlert">
<button type="button" class="close" data-ng-click="switchBool('showSuccessAlert')">×</button> <strong> {{successTextAlert}}</strong>
</div>
Anyone help me?

Put this code in HTML -
<!-- message text -->
<div class=" panel-{{alerts.class}}" ng-show="alerts.messages" >
<div ng-repeat="alert in alerts.messages track by $index" class="panel-body alert-{{alerts.class}}" >{{alert}}</div>
</div>
Put this code in angular model -
$rootScope.alert = function(type,msg){
$rootScope.message.push(msg);
$rootScope.alerts = {
class: type,
messages:$rootScope.message
}
}
For success message -
$rootScope.alert('success',"Success !!!");
For Error message -
$rootScope.alert('danger',"Error.");

You can use toastr JS specially for flash.
http://codeseven.github.io/toastr/demo.html
By using below js code, you can display a flash message.
For success message :
toastr"success";
For Error message :
toastr"success";

EDIT - Adding code
yourAppModule.controller('nextPageController', function($location){
var messageFlag = $location.search().show_message;
if(messageFlag && messageFlag === 'true'){
//show your message
}
});
When you navigate to "nextpage" pass a flag along -> #/surpage/nextpage?show_message= true
In the "nextpage" controller, read the query string value for
"show_message" ( inject $location to your controller and get value
using $location.search().show_message)
if that value == true, show your flash message

Getting Meteor 0.9.1.1 click event to update object

I'm just playing around with different patterns and am very new to programming, however I've got everything to work in my test app so far except this. I've tried a bunch of variations with no luck, but I suspect I'm missing something really simple.
Basically what I want to happen is for a user to click a button and for it to then update the value of two specific attributes of the current object.
In this example I'm wanting the update to occur when the user clicks the "Return" button (the other buttons shown below are working fine).
Here's the HTML template for the button in question:
<template name="bookDetails">
<div class="post">
<div class="post-content">
<h3>{{title}}</h3><span> {{author}}</span>
{{#if onLoan}}
<i class="fa fa-star"></i>
On loan to: {{lender}}{{/if}}
</div>
{{#if ownBook}}
Edit
Lend
<div class="control-group">
<div class="controls">
<a class="discuss btn return" href="">Return </a>
</div>
</div>
{{/if}}
</div>
</template>
Here's the .js file which contains my Template event. Basically I want to set the values for the "lendstatus" and "lender" attributes.
Template.bookDetails.helpers({
ownBook: function() {
return this.userId == Meteor.userId();
},
onLoan: function() {
return this.lendstatus == 'true';
}
});
Template.bookLoan.events({
'click .return': function(e) {
e.preventDefault();
var currentBookId = this._id;
var bookProperties = {
lendstatus: "false",
lender: "",
}
Books.update(currentBookId, {$set: bookProperties}, function(error) {
if (error) {
// display the error to the user
throwError(error.reason);
} else {
Router.go('bookPage', {_id: currentBookId});
}
});
},
});
If I type the following into the Browser console while on the page for the object with id ZLDvXZ9esfp8yEmJu I get the correct behaviour on screen and the database updates so I know I'm close:
Books.update({ _id: "ZLDvXZ9esfp8yEmJu"}, {$set: {lendstatus: "false", lender: ""}});
What am I missing?

OK - so my problem was that I'd defined the event handler in the wrong template. I'd defined it in the bookLoan template instead of the bookDetails template. Thanks #saimeunt for pointing this out!