Define Dart/Flutter domain entity patterns with constructors, factories, and validation.
npx skills add https://github.com/pretodev/nice_app --skill manageentity
Please help me install this Agent Skill. Skill: ManageEntity Source: https://github.com/pretodev/nice_app/tree/main/.trae/skills/ManageEntity Command: npx skills add https://github.com/pretodev/nice_app --skill manageentity
Guidelines for creating, maintaining, and modifying domain entities in the odu_core project.
Model a new domain entity by defining a public constructor with all fields, add a creation factory, enforce encapsulation, and implement validate() with your invariants.
High-intent search queries and answers about installing and using this skill.
To define domain entities in Dart, use a public constructor for all fields, add creation factories, encapsulate internal state, and override the validate() method to enforce invariants and handle domain-specific failures.
Use GuidEntity.newId() for generating unique identifiers in distributed systems, and SerialEntity.unsavedId for entities relying on database-generated sequential IDs during domain entity creation.
The best way to structure Flutter domain entities is by defining a required public constructor receiving all fields, supplemented by creation factories that handle initial state generation and ensure valid object instantiation.
Handle state changes in Dart domain entities by exposing domain methods for modifications, ensuring internal state encapsulation, and validating all invariants through the validate() method before applying updates.
Yes, the domain entity pattern requires selecting appropriate base classes like Entity<T>, GuidEntity, or SerialEntity to establish identity, structure, and validation consistency across your bounded contexts.
Domain entity validation fails when creation factories bypass required invariants; ensure your Dart factories initialize all fields correctly and that the overridden validate() method properly checks domain-specific failures.
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