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Custom buttons that handle multiple records

One powerful technique in Zoho Creator is to have a custom action that you can trigger on multiple records by ticking the checkboxes and then unleashing the custom action. I had a client ask me to do the same thing in Zoho CRM, i.e.

I couldn't figure out how to do this initially as the docs only mention how to do it with one record at a time but after a bit of debugging and support from the CRM team, I discovered the solution. When multiple records are selected, the IDs get sent as a pipe delimited string:

Knowing that, it's simple to write a corresponding custom function. You just have to turn the string into an array of IDs with this code IdsList = input.IdsStr.toList("|||");

Here's a sample function the Zoho team gave me:

string custombutton.SendMassEmail(string IdsStr) {
  IdsList = input.IdsStr.toList("|||");
  for each IdStr in IdsList
    operationsDetails = zoho.crm.getRecordById("CustomModule1", IdStr.toLong());
      To : "", "" 
      From : zoho.adminuserid 
      Subject : "Order " + orderid + " : Address for Delivery" 
      Message : "Order ID: " + orderid + " <br />\n<br />\nRecipient Name: " + recname + "<br />\n<br />\nMobile: " + mobile + "<br />\n<br />\nDelivery Address: " + street + " " + zip + " " + city + "<br />\n<br />\nHotel Name: " + hotelname + "<br />\n<br />\nProduct: " + qty + " x " + prodname 
  return "Success";


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