We have discussed that Schema class in Salesforce is really help you to solve your many issues , Schema class has many build in functions which helps you to write sort code .
Here are two ways to check if certain field is exist on Given object or not ! We are going to check if object has Name field . We know that some objects like : Task , Case do not have Name field .
Way 1 :
Map<String, Schema.SObjectType> describe = Schema.getGlobalDescribe();
Boolean ObjectHasCertainField = False;
Schema.DescribeFieldResult describeField;
for(Schema.SObjectField strFld :describe.get('Contact').getDescribe().fields.getMap().Values()) {
describeField = strFld.getDescribe();
if( describeField.getName() == 'Name' ) {
ObjectHasCertainField = true;
}
}
System.debug(ObjectHasCertainField);
Way 2 :
Map<String, Schema.SObjectType> s = Schema.getGlobalDescribe();
Boolean ObjectHasCertainField = s.get('Task').getDescribe().fields.getMap().keySet().contains('name');
System.debug('ObjectHasCertainField '+ ObjectHasCertainField);
These are the finest way to check if object has certain field or not . If you find any other solution then please post in comment section .
Watch the video for understanding code used in this post .
