Tag Archives: Apex

Inherited Sharing in Apex Class

Now you can specify the Inherited Sharing keyword on an Apex class, which allows the class to run your apex code with or without sharing settings, depending on the class that called it.

  • An Apex class with Inherited Sharing enables you to pass security review and ensure that your privileged Apex code is not used in unexpected or insecure ways.
  • An Apex class with Inherited Sharing runs as with sharing when used as a Visualforce page controller, Apex REST service, or an entry point to an Apex transaction.
  • An Apex class with Inherited Sharing is being called from some other class which is having without sharing setting, then it will run in without sharing mode.

Here is an example of an Apex class with Inherited Sharing and a Visualforce invocation of that Apex class. Here the running user sharing access contacts will be displayed. If the declaration Inherited Sharing will be omitted, even contacts that the user has no rights to view will be displayed due to the insecure default behavior of omitting the declaration.

Apex Class:

public inherited sharing class InheritedSharingClass{
    public List<Contact> getAllContacts(){
        return [SELECT Name FROM Contact];
    }
}

Visualforce Page:

<apex:page controller="InheritedSharingClass">
    <apex:repeat value="{!AllContacts}" var="record">
        {!record.Name}
    </apex:repeat>
</apex:page>

Record Type Selector Custom Lightning Component

Apex Controller:

public class SampleAuraController {
    
    @AuraEnabled
    public string defaultRecordTypeId {get; set;}
    @AuraEnabled
    public Map<Id, String> contactRecordTypes {get; set;}
    
    @AuraEnabled        
    public static SampleAuraController getRecordTypeValues(){
        SampleAuraController obj = new SampleAuraController();
        Map<Id, String> recordtypeMap = new Map<Id, String>();
        //Get all record types of Contact object
        List<Schema.RecordTypeInfo> recordTypeInfoList = Contact.SObjectType.getDescribe().getRecordTypeInfos();
        for(RecordTypeInfo info: recordTypeInfoList) {
            //Check record type is available for current user profile
            if(info.isAvailable()) {
                //Check master record type
                if(info.getName() != 'Master' && info.getName().trim() != ''){
                    recordtypeMap.put(info.getRecordTypeId(), info.getName());
                }
                //Get the default record type for current user profile
                if(info.isDefaultRecordTypeMapping()){
                    obj.defaultRecordTypeId = info.getRecordTypeId();
                }
            }
        }    
        obj.contactRecordTypes = recordtypeMap;
        return obj;
    }
}

Lightning Component:

<aura:component controller="SampleAuraController" implements="flexipage:availableForAllPageTypes,force:appHostable">
    
    <!--Declare Attributes-->
    <aura:attribute name="recordTypeMap" type="Map"/>
    <aura:attribute name="selectedRecordTypeId" type="String"/>
    <!--Declare Handler-->
    <aura:handler name="init" value="{!this}" action="{!c.doInit}"/>  
    
    <!--Component Start-->
    <div class="slds-m-around--xx-large">
        <div class="container-fluid">
            <lightning:radioGroup name="radioGroup"
                                  label="Select Record Type"
                                  required="true"
                                  options="{!v.recordTypeMap}"
                                  value="{!v.selectedRecordTypeId}"
                                  type="radio"/>
        </div>
        <br/>
        <lightning:button variant="brand" label="Submit" onclick="{!c.handleCreateRecord}" />  
    </div>
</aura:component>

JS Controller:

({
    doInit: function(component, event, helper) {        
        var action = component.get("c.getRecordTypeValues");
        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
                var result = response.getReturnValue();
                var recordTypes = result.contactRecordTypes;
                var recordtypeMap = [];
                for(var key in recordTypes){
                    recordtypeMap.push({label: recordTypes[key], value: key});
                }
                component.set("v.recordTypeMap", recordtypeMap);
                component.set("v.selectedRecordTypeId", result.defaultRecordTypeId);
            }
        });
        $A.enqueueAction(action);
    },
    
    handleCreateRecord: function(component, event, helper) { 
        var selectedRecordTypeId = component.get("v.selectedRecordTypeId");
        if(selectedRecordTypeId){
            var createRecordEvent = $A.get("e.force:createRecord");
            createRecordEvent.setParams({
                "entityApiName": 'Contact',
                "recordTypeId": selectedRecordTypeId,
            });
            createRecordEvent.fire();
        }
    }
})

Output:

Handle Trigger and Validation Rule Error in Lightning Component

Sometimes we can have a requirement to display validation rule error or apex trigger error messages, on save of record in Lightning Component. We can handle those errors from apex controller and can throw messages to Lightning Component. In lightning response object though the state value comes as ERROR but the message in the error object always says ‘Internal Server Error”. Here is an example to handle the Trigger and Validation Rule Error in apex controller to show error messages in Lightning Component.

In below example I’ve used Lead object FirstName, LastName, Email & Company Field in lightning component to create record. And I’ve created a validation rule and a trigger validation on Lead object.

1. Validation rule for Company field (Company cannot be Test Company).

2. In below Trigger I’m checking if FirstName field value is “Test” then it will throw error.

trigger LeadTrigger on Lead (before insert, before update) {
    
    for(Lead obj :Trigger.new){
        if(obj.FirstName == 'Test'){
            obj.FirstName.addError('First name cannot be test');
        }
    }
}

Apex Controller:

public class SampleAuraController {
    
    @AuraEnabled
    Public static void createLead(Lead objLead){
        String msg = '';
        try{
            //Insert Lead Record
            insert objLead; 
            
        }catch(DmlException e){
            //Any type of Validation Rule error message, Required field missing error message, Trigger error message etc..
            //we can get from DmlException
            
            //Get All DML Messages
            for (Integer i = 0; i < e.getNumDml(); i++) {
                //Get Validation Rule & Trigger Error Messages
                msg =+ e.getDmlMessage(i) +  '\n' ;
            }
            //throw DML exception message
            throw new AuraHandledException(msg);
            
        }catch(Exception e){
            //throw all other exception message
            throw new AuraHandledException(e.getMessage());
        }
        finally {
        }
    } 
}

Lightning Component:

<!--Sample.cmp--> 
<aura:component controller="SampleAuraController" implements="flexipage:availableForAllPageTypes,force:appHostable">
    
    <!--Declare Attributes-->
    <aura:attribute name="isSpinner" type="boolean" default="false"/>
    <aura:attribute name="objLead" type="Lead" default="{'sobjectType':'Lead', 
                                                        'FirstName': '',
                                                        'LastName': '',
                                                        'Email': '', 
                                                        'Company': ''}"/>
    
    
    <!--Component Start--> 
    <div class="slds-m-around--xx-large">
        <div class="container-fluid">
            <div class="form-group">
                <lightning:input name="fname" type="text" maxlength="50" required="true" label="First Name" value="{!v.objLead.FirstName}" />
            </div>
            <div class="form-group">
                <lightning:input name="lname" type="text" maxlength="50" required="true" label="Last Name" value="{!v.objLead.LastName}" />
            </div>
            <div class="form-group">
                <lightning:input name="emailId" type="email" maxlength="100" required="true" label="Email" value="{!v.objLead.Email}" />
            </div>
            <div class="form-group">
                <lightning:input name="company" type="text" maxlength="50" required="true" label="Company" value="{!v.objLead.Company}" />
            </div>
        </div>
        <br/>
        <lightning:button variant="brand" label="Submit" onclick="{!c.handleLeadSave}" />        
        <lightning:button label="Cancel" onclick="{!c.handleCancel}"/>        
    </div>
    <!--Component End-->
</aura:component>

Lightning JS Controller:

({    
    //Handle Lead Save
    handleLeadSave : function(component, event, helper) {
        var objLead = component.get("v.objLead");
        var action = component.get("c.createLead");
        action.setParams({
            objLead : objLead
        });
        action.setCallback(this,function(a){
            var state = a.getState();
            if(state === "SUCCESS"){
                alert('Record is Created Successfully');
            } else if(state === "ERROR"){
                var errors = action.getError();
                if (errors) {
                    if (errors[0] && errors[0].message) {
                        alert(errors[0].message);
                    }
                }
            }else if (status === "INCOMPLETE") {
                alert('No response from server or client is offline.');
            }
        });       
        $A.enqueueAction(action);
    }
})

Output:

Trigger Error Message:

Validation Rule Error Message:

Salesforce Apex Switch Statement

From Summer ’18 Release Apex now supports switch statement, that tests whether an expression matches one of several values and branches accordingly.

Syntax:

switch on expression {
    when value1 {		// when block 1
        // code block 1
    }	
    when value2 {		// when block 2
        // code block 2
    }
    when value3 {		// when block 3
        // code block 3
    }
    when else {		  // when else block, optional
        // code block 4
    }
}

Example:

for(Integer i=1; i<=5; i++){
    Switch on i {
        when 1,2{
            System.debug('case 1 and 2');
        }
        when 5{
            System.debug('case 5');
        }
        when else{
            System.debug('case 3 and 4');
        }
    }
 }

The switch statement evaluates the expression and executes the code block for the matching when value. If no value matches, the code block for the when else block is executed. If there isn’t a when else block, no action is taken.

Iterate Map List Values in Lightning Component

Apex Class:

public class SampleAuraController {
    
    @AuraEnabled
    Public static Map<string, List<string>> getMap(){ 
        Map<String, List<string>> mapObj = new Map<String, List<string>>();
        List<string> fruits = new List<String>{'Apple', 'Orange', 'Banana', 'Grapes'};
		List<string> vegetables = new List<String>{'Cabbage', 'Carrot', 'Potato', 'Tomato'};
		mapObj.put('Fruits', fruits);
        mapObj.put('Vegetables', vegetables);  
        return mapObj;
    }
}

Lightning Component:

<aura:component controller="SampleAuraController">
    <aura:attribute name="mapValues" type="object" />	
    <div class="slds-m-around_xx-large">
        <div class="slds-box slds-theme_default">
            <lightning:button label="Iterate Map" onclick="{!c.getMapValues}"/>
            <aura:iteration items="{!v.mapValues}"  var="mapKey" indexVar="key">  
                <strong><p>{!mapKey.key}</p></strong>
                <aura:iteration items="{!mapKey.value}" var="mapValue">
                    <p>{!mapValue}</p>
                </aura:iteration>
            </aura:iteration>
        </div>
    </div>
</aura:component>

Lightning Component JS Controller:

({
    getMapValues : function(component, event, helper) {
        var action = component.get("c.getMap");
        action.setCallback(this, function(response){
            var state = response.getState();
            if (state === "SUCCESS"){
                var result = response.getReturnValue();
                var arrayMapKeys = [];
                for(var key in result){
                    arrayMapKeys.push({key: key, value: result[key]});
                }
                component.set("v.mapValues", arrayMapKeys);
            }
        });
        $A.enqueueAction(action);
    }
})

Output: