Part 1 of a 3 part series: Using Business Rules
When developing customizations for Microsoft Dynamics CRM, forms can become cluttered with fields that are only used under very specific conditions. Take for example the following section from an entity form that deals with discount approvals:
If a discount approval isn’t required, it doesn’t make sense to show the submitted and approved fields; they’re just cluttering the form. It would be preferred to hide these fields until they provide useful information to the user.
Using Business Rules to Show and Hide Fields
Business rules can be used to execute certain actions under a specific set of conditions. In this case, we want to show the “Submitted,” “Discount Approval Submitted Date,” “Approved,” and “Discounted Approval Approved Date” fields when “Required” is set to “Yes,” and hide the same fields when “Required” is set to “No.”
First, go to the form these fields are displayed on. Locate the fields you want to add showing and hiding logic to and open the “Field Properties” dialog for one of the fields. Navigate to the “Business Rules” tab:
Click the “New” button to create a new business rule and launch the business rule creation dialog. Be sure to give the business rule a meaningful name and description.
In the business rule creation dialog you can see that business rules are broken up into conditions and actions. Actions define what the business rule actually does and conditions define when to execute the given actions.
Click the “+” under condition to add a new condition to the business rule. In this example, the condition we are checking against is if the “Required” field is set to “Yes.” Click the check mark to save the changes to this condition:
Click the “+” under action to add a new action to the business rule. In this example, when “Required” is set to “Yes” we want to show the “Submitted,” “Discount Approval Submitted Date.” “Approved,” and “Discounted Approval Approved Date” fields. Create a “Set visibility” rule for each of these fields:
Now that your business rule is complete, save the business rule, and activate it. Activated business rules cannot be edited; you must first deactivate the rule if you want to edit it. If a business rule is not active, it will not fire when the condition is met.
This business rule captures the “showing” portion of your showing and hiding logic. A separate business rule must be written for that same field to implement the hiding portion. Create a new business rule with the condition that the “Required” field is “No” and add actions to hide the “Submitted,” “Discount Approval Submitted Date,” “Approved,” and “Discounted Approval Approved Date” fields. Be sure to save and activate your business rule when you are complete.
From your “Field Properties” dialog you should now have two active business rules:
With these business rules in place you are ready to test your showing and hiding functionality. Navigate to your form and test. When “Required” is “No,” the “Submitted,” “Discount Approval Submitted Date,” “Approved,” and “Discounted Approval Approved Date” fields should be hidden:
Switching “Required” to “Yes” should cause the “Submitted,” “Discount Approval Submitted Date,” “Approved,” and “Discounted Approval Approved Date” fields to appear:
Limitations to Business Rules
It is important to note that there are a number of limitations to business rules:
- In Microsoft Dynamics CRM 2013, else if and else clauses cannot be added. In Microsoft Dynamics CRM 2015 it will be possible to specify else if and else clauses in business rules.
- You cannot conditions within conditions.
- You cannot have “or” logic in conditions. To implement or logic you must create separate business rules.
- You cannot group conditions.