/services/data/v39.0/tooling/query?q=Select Id,ValidationName,Active,Description,EntityDefinition.DeveloperName,ErrorDisplayField, ErrorMessage From ValidationRule WHERE EntityDefinition.DeveloperName = 'Account'
SELECT Id, ValidationName, Active, Description, EntityDefinition.DeveloperName, ErrorDisplayField, ErrorMessage FROM ValidationRule
Note: To query use Tooling API
Fore more information Click here
<apex:page >
<apex:form >
<apex:pageBlock >
<apex:pageBlockSection >
<apex:pageBlockSectionItem >Gender
<apex:selectRadio >
<apex:selectOption itemLabel="Male" itemValue="m"/>
<apex:selectOption itemLabel="Female" itemValue="f"/>
</apex:selectRadio>
</apex:pageBlockSectionItem>
</apex:pageBlockSection>
</apex:pageBlock>
</apex:form>
</apex:page>
Business Use Case: There is a custom field “IsActive” on “Contact” object. The Admin user wants to delete all inactive Contacts from “Account” record.
Here I’ve created a flow and the flow is invoked by a Custom Button, and that Custom Button is configured on Account object page layout. User will be able to access in both Classic & Lightning experience.
1. Go to Setup | Quick Find – Search Flows – Click Flow | New Flow
2. Create a variable as “varAccountId”
3. Create a sObject Collection Variable as “varCollectionOfContacts”
4. Create a Fast Lookup to get inactive Contacts with Account Id
5. Create a Decision to check Account has available inactive contacts.
6. Create Fast Delete to delete Contacts
8. Set the Fast Lookup as a starting element, indicated by the green down arrow. Then, connect the flow element “Fast Lookup” to “Decision” and “Decision” to “Fast Delete”.
9. Activate the created flow.
10. Create a Custom Button on “Account” object to invoke the Flow with AccountId parameter.
11. Add above created Custom button into Account page layout.
You need to call the $A.get("$SObjectType.CurrentUser.Id"), to get the User Id in the Lightning JS Controller.
var userId = $A.get("$SObjectType.CurrentUser.Id");
Console.log(userId);