Dave Helgerson

URL Parameters within Apex and Visualforce

January 5, 2014September 28, 2013 by daveh

Get a URL parameter from a Visualforce page String MyParameter = ApexPages.currentPage().getParameters().get(‘urlparm’); Get a map of URL parameters from a Visualforce page Map UrlParameterMap = ApexPages.currentPage().getParameters(); // check for a specific parameter if (UrlParameterMap.containsKey(‘urlparm’)){ //do something with the parameter… UrlParameterMap.get(‘urlparm’) } Get URL Parameters in a Visualforce page This assumes the URL is looks like … Read more

Apex Loops, The Simple Things

October 1, 2013September 18, 2013 by daveh

For loop over a map’s keys (KeySet) map MyAwesomeMap; //… other code for (String KeyStr: MyAwesomeMap.keySet()){ system.debug(KeyStr); } For loop over a map’s values map MyAwesomeMap; //… other code for (CustomObject__c AnObject: MyAwesomeMap.values()){ system.debug(AnObject); } For loop over a list list MyAwesomeList; //… other code for (CustomObject__c AnObject: MyAwesomeList){ system.debug(AnObject); } For loop over a … Read more

Code Snipits for Converting Salesforce Collections

October 16, 2013September 8, 2013 by daveh

Convert a Map to a List of keys Map MyMap = new Map(); List IdList = new List(); // … logic to load map … IdList.addAll(MyMap.keySet()); Convert a Map Values to a List of values Map MyMap = new Map(); List CustomObjectList = new List(); // … logic to load map … CustomObjectList.addAll(MyMap.values()); Convert an … Read more

Report on Field Changes in Salesforce

November 26, 2012 by daveh

Tracking field history in Salesforce allows you to report on the original and new values of a field. This functionality can be very useful when determining who changed a field value and when it happened. This built-in change tracking has some limits:

Only the following standard objects allow field history tracking: Accounts, Cases, Contacts, Entitlements, Service contracts, Contract line items, Contracts, Leads, Opportunities, and Solutions
Only 20 fields may be tracked per object
Not all field types can be tracked

Processing Game Expariment – Snake

November 25, 2012October 19, 2011 by daveh

My friend Chris at FeltPad Inc.partnered with Reason to Give and i.c.Stars to teach the basics of programming. A few other companies, graduate students at UIC, and friends donated resources and time to make the Chicago Code Workshop a success. We were able to teach about application development, and Getty Images donated laptop computers to the students.