Anjali
IndividualForum Replies Created
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Please refer the below link-
https://developer.salesforce.com/docs/component-library/documentation/en/lwc/create_components_css_slds -
Just make sure you setup your Named Credential using OAuth Authentication to start with rather than password authentication.
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constructor() is called when the element is created.
connectedCallback() is called when (after) the element is attached to the DOM. -
The Data Import Wizard tries to map as many of your data fields as possible to standard Salesforce data fields. If Salesforce can't automatically map fields, however, you do it manually. Unmapped fields are not imported into Salesforce.
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if you're authorizing your org for use with the Salesforce Command-Line Interface (CLI), or signing into it on your phone to see how something looks on mobile. In most Trailhead Playgrounds, it's easy to reset your password.
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Never change your username in a Trailhead Playground. This prevents Trailhead from checking your work and awarding badges/points for completing challenges.
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You'll still be able to log in no matter where your career takes you.
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An immutable object is initialized by its constructor only, while a singleton is instantiated by a static method. A set of functions (or static methods) which manipulate some shared mutable state constitute a singleton. This implies that every mutable member of a singleton collection is itself a singleton.
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A singleton allows access to a single created instance - that instance (or rather, a reference to that instance) can be passed as a parameter to other methods, and treated as a normal object. A static class allows only static methods. Singleton objects are stored in Heap, but static objects are stored in stack.
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Static means that it belongs to a class it is in and not to any instance. So it cannot be a top level class. - Static class will have all its member as static only unlike Singleton. - It can be lazily loaded whereas static will be initialized whenever it is first loaded.
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Decorator is a part of ECMA script and used to add extra functionality in your function or methods. In LWC we use 3 decorator to enhance the functionality of our property or function.
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You can create a record by using lightning record form, here is the link hat you can refer-
https://developer.salesforce.com/docs/component-library/documentation/en/lwc/data_create_record -
This is one of life cycle hook in web component JavaScript. connectedCallBack function invokes/fires automatically when certain lwc component inserted into web dom. It is works like init handler in lightning aura component, we can say it is lwc init handler.
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Web Components provide strong encapsulation for reusable components, while React provides a declarative library that keeps the DOM in sync with your data. As a developer, you are free to use React in your Web Components, or to use Web Components in React, or both.
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To lock a set of sObject records in Apex, embed the keywords FOR UPDATE after any inline SOQL statement. For example, the following statement, in addition to querying for two accounts, also locks the accounts that are returned: Account [] accts = [SELECT Id FROM Account LIMIT 2 FOR UPDATE];
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When an sObject record is locked, no other client or user is allowed to make updates either through code or the Salesforce user interface. The client locking the records can perform logic on the records and make updates with the guarantee that the locked records won’t be changed by another client during the lock period.
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By using FOR UPDATE clause in your SOQL statement.
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Granular locking can help customers who experience these locking issues. Without this feature, our code locks the entire table that keeps track of people’s membership in various groups. This means that any two administrative operations that change roles, public groups, or territories will conflict if they happen simultaneously.
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Yes it is possible if the user did not have the read access for that object.
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({ doInit: function(component, event, helper) {
var action = component. get('c.getMyMap'); action. ...
var state = response. getState(); if (state === "SUCCESS") {
//set response value(map) in myMap attribute on component. component. set('v.myMap',response. ...
}); $A. enqueueAction(action); -
@AuraEnabled
public static List<Wrapperclass> saveDataDML(String listToSaveString){
List<Wrapperclass> listToSave = (List<Wrapperclass>)JSON.deserialize(listToSaveString, List<Wrapperclass>.class); -
Please refer the below link-
https://www.forcetalks.com/blog/how-to-use-wrapper-class-in-salesforce-lightning-component/ -
To expose an Apex method to a Lightning web component, the method must be static and either global or public . Annotate the method with @AuraEnabled .
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Lightning web components(LWC) use a reactive wire service, which is built on Lightning Data Service. Components use @wire in their JavaScript class to read data from one of the wire adapters in the lightning/ui*Apimodules and also to call the apex controller server-side methods using wire services.
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You can look to this code-
gotoURL : function(component, event, helper) {
var urlEvent = $A.get("e.force:navigateToURL");
urlEvent.setParams({
"url":"/apex/vfpagename?parametername="+"parametervalue"
});
urlEvent.fire(); }