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Apex Controller for the Field Set UI Generator
/**
* This Apex Controller is created to
* generate Field Set UI Generator
* which would create dynamic
* Visualforce page with Lightning
* Design System with the Fields
* defined in a Field Set.
*
* @author Shruti Sridharan
* @since 02/09/2016
* @revisions N/A
*/
public class FieldSetUIGenerator {
public Contact con { get; set; }
public Boolean isSuccess { get; set; }
public String message { get; set; }
public Boolean isCompleted { get; set; }
public String fieldSetName { get; set; }
public Boolean isFieldSetValid { get; set; }
public FieldSetUIGenerator() {
con = new Contact();
isCompleted = FALSE;
fieldSetName = ApexPages.currentPage().getParameters().get( 'fs' );
isFieldSetValid = checkFieldSetValidity();
fetchContactDetails();
}
/**
* This method is created to Insert or Update
* a contact and generate a message depicting
* the status of the Insert or Update.
*/
public void saveContact() {
try {
if( con.Id == NULL ) {
INSERT con;
message = 'Contact was created successfully';
}
else {
UPDATE con;
message = 'Contact was updated successfully';
}
isSuccess = TRUE;
}
catch( Exception ex ) {
isSuccess = FALSE;
message = ex.getMessage();
}
isCompleted = TRUE;
}
/**
* This method is created to check if the Field Set
* name recieved from the URL is valid or not.
*/
private Boolean checkFieldSetValidity() {
if( fieldSetName != NULL ) {
Map<String, Schema.FieldSet> fsMap = Schema.SObjectType.Contact.fieldSets.getMap();
if( fsMap.containsKey( fieldSetName ) ) {
return TRUE;
}
}
return FALSE;
}
/**
* Generates a query with all the fields in the
* Field Set inorder to query the records values
* from the Contact.
*/
private void fetchContactDetails() {
con.Id = ApexPages.currentPage().getParameters().get( 'id' );
if( isFieldSetValid && con.Id != NULL ) {
List<Schema.FieldSetMember> fieldsList = Schema.SObjectType.Contact.fieldSets.getMap().get( fieldSetName ).getFields();
String query = 'SELECT ';
for( Schema.FieldSetMember field : fieldsList ) {
query += field.getFieldPath() + ', ';
}
query += 'Id FROM Contact WHERE Id=\'' + con.Id + '\'';
con = Database.query( query );
}
}
}
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