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backend-datamodels

Define and validate Drumr Framework backend data models with fields, relationships, and permissions.

Updated Sep 16, 2025
Search Tags:#typescript#validation#backend#schema#crud#relationships#datamodels
One-click install
npx skills add https://github.com/slingr-stack/qa-test-drumr --skill backend-datamodels
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: backend-datamodels
Source: https://github.com/slingr-stack/qa-test-drumr/tree/main/project-management-app/.agents/skills/backend-datamodels
Command: npx skills add https://github.com/slingr-stack/qa-test-drumr --skill backend-datamodels

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps you define consistent, production-ready backend data models for Drumr Framework so entities, fields, relationships, validation, and persistence rules stay aligned with the application’s domain logic.

Core Features & Use Cases

  • Entity and Field Design: Model text, choice, date, numeric, reference, and composition fields with clear typing and business-driven constraints.
  • Lifecycle and Behavior: Add validation, calculated fields, indexing, optimistic locking, and save-time hooks where the domain needs them.
  • Access and Exposure: Prepare models for CRUD usage by registering permissions and keeping backend schema concerns separate from frontend presentation.
  • Use Case: Build a customer, order, or project model with the right primary key, relationships, and validation rules before wiring it into APIs and workflows.

Quick Start

Ask the skill to design a Drumr backend data model for your feature, including the entity fields, relationships, validation rules, primary key, and required permissions.

Frequently Asked Questions about backend-datamodels

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I define backend data models with TypeScript validation and schema relationships?▼

Backend data models are defined using the @DataModel decorator and BaseDataModel inheritance, with unified field decorators for typing, relationships, validation rules, and a required primary key.

What is the best way to structure entity fields and relationships for a backend schema?▼

The best way to structure entity fields is by modeling text, choice, date, numeric, and reference fields with clear typing, while using composition fields and relationship decorators to maintain domain-driven constraints.

How do I add lifecycle hooks and calculated fields to a backend data model?▼

Lifecycle hooks and calculated fields are added directly within the data model definition to handle save-time validation, optimistic locking, and indexing where the domain logic requires dynamic behavior.

Do I need to register permissions for CRUD operations on backend data models?▼

Yes, you must register permissions for any API-exposed backend data model to ensure proper CRUD access control and keep backend schema concerns separate from frontend presentation layers.

Does the Drumr Framework require a primary key for every backend data model?▼

Yes, the Drumr Framework requires every backend data model to define a primary key using the @DataModel decorator and BaseDataModel inheritance to support persistence and CRUD operations.

When should I not use calculated fields in backend schema design?▼

Calculated fields should not be used when the domain logic requires static persistence, as they introduce dynamic save-time behavior and validation hooks that may conflict with straightforward entity field storage.

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