Getting Reference FieldsI(Lookup or Master detail) through dynamic apex

Hi ,

We  had a scenario

If  we get a parameter "id" in the  url  then we should  be  able to find out    object reference is present in  the object which we are  trying  to insert then we have to make it  child record for  the object  related  to id.

For eg :

On my vf page i am trying  to insert  a contact and  i got  a parameter id related to Account

through the below code  i can find out  the  field which is  reference  to  Account  and  then fill that with parameter id to get contact inserted  under account.
The following code useful getting  reference fields  under  an object not  whole  example.



Eg: Code for  getting  reference

Map<String,Schema.SObjectField>  sobjecFieldMap = schema.getGlobalDescribe().get('Contact').getDescribe().fields.getMap();
for(String fieldName:sobjecFieldMap.keyset()){ 
    if(sobjecFieldMap.get(fieldName).getDescribe().getType()== Schema.DisplayType.REFERENCE){
       System.debug(sobjecFieldMap.get(fieldName).getDescribe().getReferenceTo());
    }
   
}


Output:
---------
Contact
Account
User