Oracle Visual Builder: Applications That Outlive Their First Release · Module 10 · Validation and error handling
Client-side validation is a courtesy
Lesson 100 of 176 · 3 min · Free preview
IT MAKES THE FORM PLEASANT. IT STOPS NOTHING, because the request can be made WITHOUT YOUR PAGE AT ALL. Module 11 is the consequence. This is a free preview lesson because it is the sentence somebody should read before deciding this course is about drag and drop. THE MECHANISM IS PLAIN AND NOT A SECRET. Your page calls an endpoint. The endpoint is visible in the browser's own network tab, on the page the user is looking at. Anybody who can open that page can see the URL, the shape of the body, and the credential the browser is sending — and can send their own request. SO EVERY CHECK IN YOUR FORM IS SOMETHING THAT HAPPENS BEFORE A REQUEST YOUR APPLICATION CHOOSES TO MAKE. Skip the page, and the checks never ran — not because they failed, but because they were never in the path. WHICH IS NOT AN…
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