Apply Business Logic in Model-Driven Apps Using Client Scripting PL-400 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A developer is creating a client script that runs on the save event of a custom entity form. The script must check whether a related record exists in a child entity. If not, the save should be cancelled and an error message shown. Which approach should the developer use?

   • AUse formContext.getAttribute('parentid').getValue() to check if the parent field is set, and if not, cancel the save.
   • BUse Xrm.WebApi.retrieveMultipleRecords to query the child entity with a filter on the parent lookup, and if the returned array is empty, call executionContext.getEventArgs().preventDefault() and setSaveErrorMessage.
   • CUse formContext.data.entity.save() and then check the response to see if the save was successful.
   • DUse Xrm.WebApi.createRecord to create a child record automatically if none exists.
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2. 7foundation · easy

   Which of the following is a valid Power Fx function that can be used in a command to show a notification to the user?

   • ANotify
   • BAlert
   • CShowMessage
   • DDisplay
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4. 8expert · hard

   A developer is adding a client script to a model-driven app form. The script must run when a field's value changes, but only if the form is in create mode. The developer registers the script for the field's OnChange event. Which code should the developer use inside the script to check if the form is in create mode?

   • Aif (formContext.data.entity.getIsDirty()) { ... }
   • Bif (formContext.ui.getFormType() === 1) { ... }
   • Cif (formContext.data.entity.getEntityName() === "") { ... }
   • Dif (formContext.data.entity.getId() === null) { ... }
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5. 9foundation · easy

   In a model-driven app, which object is the top-level entry point for the Client API object model when a form context is available?

   • AXrm
   • BXrm.Utility
   • CXrm.Page
   • DformContext
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6. 10application · medium

   A developer is adding a custom command to a model-driven app grid. The command must run a JavaScript function that reads the selected record's ID and then opens a custom page. The developer registers the function as a command. Which approach should the developer use to get the selected record ID?

   • AUse Xrm.Page.getAttribute("accountid").getValue() to get the selected record ID.
   • BUse the primaryControl parameter of the command function to access the grid and get the selected rows.
   • CUse the executionContext parameter to call getFormContext().data.entity.getId().
   • DUse the selectedItem parameter of the command function to get the record ID directly.
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