Inject your code before CRM button event - Conditional deactivation of CRM record

I came across business requirement like, if there are any active child records, then show error message to users when deactivating parent record.

I can use plugin or real time workflow for this, but when error message thrown, CRM throws error like Business process error.

But customer doesn’t want to see this business process error, customer wants Alert message, and do not want to deactivate record.

To full fill this requirement I customized CRM button command, and added my own script on deactivate button.

Here are steps I did

I am using Ribbon workbench to customize entity ribbon.

1.       Customize Deactivate command

2.       Once command is customized you will see JavaScript library and function used by MS CRM.

3.  Change function Name to NaN and remove parameters for CRM default deactivates action.

This we need to do so when condition is satisfied, record should be deactivated and CRM JavaScript library should be loaded. 

4.       Now add your own JavaScript action in deactivate command, and call your own JavaScript function

When calling own JavaScript function make sure you are using same Parameters used in CRM default deactivates function, as we are going to call this function in our own JavaScript.

5.       In your JavaScript code, you can check, is there any active child records associated with this record? If not then deactivate record, otherwise show message. 

JavaScript code is

CheckOnDeactivation: function (CompanyId, entityName) {

        var req = new XMLHttpRequest();

        req.open("GET", Xrm.Page.context.getClientUrl() + "/XRMServices/2011/OrganizationData.svc/contact?$select=contactId&$filter=parentcustomerid/Id eq (guid'" + CompanyId + "') and statecode/Value eq 0", false);

        req.setRequestHeader("Accept", "application/json");

        req.setRequestHeader("Content-Type", "application/json; charset=utf-8");

        req.onreadystatechange = function () {

            if (this.readyState === 4) {

                this.onreadystatechange = null;

                if (this.status === 200) {

                    var returned = JSON.parse(this.responseText).d;

                    var results = returned.results;

                    if (results.length >= 1) {

                        alert('You cannot deactivate this record because it has active child records.');                        

                        return false;

                    }

                    else {

                        Mscrm.CommandBarActions.deactivate(CompanyId, entityName);

                        return true;

                    }

                }

                else {

                    alert(this.statusText);

                }

            }

        };

        req.send();

    }

6. Save and Publish customization

Now when trying to deactivate parent if it has any active child then error will be thrown and record will not be deactivated. 

You can use same technique for any other button command.