User Restriction by LucidBrainz is a lightweight and powerful Odoo 18 module that enables administrators to control what operations specific users can perform across the entire system. Using Odoo's native group-based access mechanism, the module provides three dedicated restriction groups — No Create, No Update, and No Delete. Once a user is assigned to any of these groups, they are immediately restricted from performing that operation on any model in Odoo — no additional configuration required. The restriction works system-wide by inheriting Odoo's base AbstractModel, which means the control applies universally without needing to configure it separately for each module. This is ideal for businesses that require read-only users, auditors, or junior staff who should only view data without any modification rights. The module follows standard Odoo development practices, uses clean model inheritance, and is production-ready with minimal performance overhead. Simply install, assign the group to the user, and the restriction goes into effect immediately.

• No Create Restriction: Users assigned to the "No Create" group cannot create any new record across any Odoo model — enforced system-wide automatically.
• No Update Restriction: Users assigned to the "No Update" group cannot edit or modify any existing record — all write operations are blocked immediately.
• No Delete Restriction: Users assigned to the "No Delete" group cannot delete any record from the system — unlink operations are blocked for that user.
• System-Wide Enforcement: Restrictions apply across all Odoo models universally — no need to configure individually for Sales, Purchase, Inventory, or any other module.
• Group-Based Control: Works on Odoo's native res.groups mechanism — easy to assign via Settings > Users & Companies > Users.
• Base Model Inheritance: Uses Odoo's AbstractModel base inheritance — clean implementation with no conflicts with other installed modules.
• Clear Error Message: When a restricted user attempts a blocked operation, a clear and descriptive UserError message is shown immediately.
• Instant Activation: No setup wizard, no additional configuration — install the module, assign the group to the user, and restriction is active immediately.
• Odoo 18 Compatible: Fully tested on Odoo 18 with proper use of @api.model_create_multi and current ORM best practices.
• Lightweight & Minimal: Only depends on the base module — no heavy dependencies, minimal memory footprint, suitable for any Odoo setup.