1

I have this statement :

Schema.DescribeFieldResult f = Schema.sObjectType.Order.fields.AccountId;

I need this to be translated to this:

 string SObjName = 'Order';
 String fld = 'AccountId';
 Schema.DescribeFieldResult f = Schema.sObjectType.[SObjName].fields.[fld];

I'm kinda new to salesforce any help would be greatly appreciated. Thank you :)

2

That would look like this:

public DescribeFieldResult getFieldDescribe(String sType, String fName) {
  SObjectType t = ((sobject)Type.forName('Schema.'+sType).newInstance()).getSObjectType();
  return t.getDescribe().fields.getMap().get(fName).getDescribe();
}

Note that this method has no error checking, so you'll want to add in any extra safeguards you think are necessary.

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2

You get the object describe from the global describe. Then you can call fields.getMap().

DescribeSObjectResult objectDescribe = Schema.getGlobalDescribe().get('Order');
Map<String, SObjectField> fieldMap = objectDescribe.fields.getMap();
DescribeFieldResult fieldDescribe = fieldMap.get('AccountId');

Note that the Schema. is optional here. You can also one line it if you like, but it'd be quite a long line:

DescribeFieldResult field = Schema.getGlobalDescribe().get('Order')
    .fields.getMap().get('AccountId');
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