creating-model

name	creating-model
description	Scaffold a Codable data model with CodingKeys, eventParameters, and mock data. Use when the user asks to create a new model, data type, struct, or enum for the app. Supports both DataSyncModelProtocol models (for database syncing) and simple Codable models.

Creating Model

Scaffold a data model with the correct conformances, CodingKeys, analytics parameters, and mock data.

Steps

1. Get the model name from the user (PascalCase, e.g., "Post", "Message", "Avatar")
2. Determine the model type (see below)
3. Read references/templates.md for the templates
4. Substitute {ModelName}, {modelName}, and {modelname} throughout
5. Determine the folder location (see below)
6. Create the file

Choosing the Model Type

Type	When to Use	Conformances
Data Sync Model	Model will be synced to/from a database via DataManagers	DataSyncModelProtocol (StringIdentifiable, Codable, Sendable)
Simple Model	Local config, UI state, or API response that isn't database-synced	StringIdentifiable, Codable, Hashable
Enum Model	Fixed set of options (AB test variants, categories, status)	String, Codable, CaseIterable

If unclear, ask the user whether the model will be synced to a database.

Folder Location

Models live under their related manager: Managers/{ManagerName}/Models/

• Check existing managers in Managers/ to determine which manager owns this model
• If the model belongs to a new manager, suggest creating the manager first
• If unclear, ask the user which manager this model belongs to

Key Patterns

• Naming: File and struct are {ModelName}Model.swift / {ModelName}Model — enum models omit the Model suffix
• Data sync models must be public struct with public var id: String — required by DataSyncModelProtocol
• CodingKeys always use snake_case raw values (e.g., case firstName = "first_name")
• eventParameters — computed property mapping each property to a prefixed analytics key using CodingKeys raw values. Prefix with the model's lowercase name, max 8 characters (e.g., "user_\(CodingKeys.email.rawValue)"). Check existing models in Managers/**/Models/ to ensure no other model uses the same prefix — if there's a conflict, abbreviate (e.g., "avatar" → "avtr", "message" → "msg")
• static var mock returns mocks[0] — static var mocks returns an array of realistic test instances
• All properties should be optional (with ?) unless truly required — models from a database may have missing fields
• init with all properties as parameters — use default values of nil for optionals
• import SwiftfulDataManagers only for data sync models — simple models just need import SwiftUI