Tutorial Part 3: Add Inline Cell Editing to a JS Grid App with DynamoDB

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The third installment of a CRUD tutorial series demonstrates how to make individual grid cells directly editable, with changes instantly patched to a DynamoDB backend via a Lambda function. Each edit is handled optimistically — the new value appears immediately in the UI, and the grid automatically reverts the cell if the server rejects the change. A PATCH endpoint is implemented with an allow-list restricting updates to four specific fields, preventing unauthorized attribute changes. The update also introduces a full-screen toggle button and relocates the row form from a drawer overlay into a persistent side panel on the page. The tutorial requires Lattice Grid version 1.76.0 or later, and source code is available in the part-3 folder of the toclocoinc/lattice-tutorial-crud-dynamodb repository.

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