HTML Client related entity look ups

Question

How are you folks handling the very typical scenario where the user is completing a form and realizes that they need to add a record to a related entity lookup table before they can complete their entry. The primary form will have validation so I
don't want to force them to save, and as a result they have to quit and abandon their entry, every time they need to add a look up, and then come back and start over. This was easy in the Silverlight client.  Any ideas?

Answer 1

Hi Hessc,
The Code from Paul's article is here:
https://code.msdn.microsoft.com/Reusable-search-screens-in-91c64c30/
The simplest way to this is to add a button which opens a browse screen and then passes the selected item from that screen back to the calling screen using the afterClosed event.
This is what Paul is doing here for selecting the customer from an order entry screen:
myapp.AddEditOrder.BrowseForCustomer_Tap_execute = function (screen) {
myapp.showBrowseCustomers(screen.Order.Customer, true,
beforeShown: function (myscreen) {
afterClosed: function (myscreen, action) {
screen.Order.Customer = myscreen.SelectedCustomerParameter;
He uses the same technique to set the selected item on BrowseCustomers screen after adding a new customer. 
Additionally he is reusing an existing BrowseCustomer screen by showing and hiding buttons based on a screen property called 'IsInSelectMode".
So the flow for new customer is:
OrderScreen > Tap BrowseForCustomer >
BrowseCustomerScreen > Tap AddCustomer >
AddEditCustomerScreen > Save (afterClosed sets selected customer on BrowseCustomer screen) >
BrowseCustomer > Close (afterClosed sets Customer on OrderSreen) >
OrderScreen
HTH,
Josh