Create Cqrs Queries

create-cqrs-queries

Read CQRS/CONTEXT.md for conventions (scalar inputs/VO getters, QueryResult scalar-only rule).

1. Get-for-editing query

Create src/Core/Domain/{Domain}/Query/Get{Domain}ForEditing.php:

• Constructor takes int $id (scalar)
• Getter returns VO: getId(): {Domain}Id
• Queries are read-only data objects — no side effects

2. Result DTO

Create src/Core/Domain/{Domain}/QueryResult/Editable{Domain}.php:

• Constructor parameters: all fields the edit form needs to pre-fill (scalar types only — see CONTEXT.md)
• Public getter for every field
• Immutable: no setters, all values set at construction

Reference: src/Core/Domain/Tax/QueryResult/EditableTax.php (simple), src/Core/Domain/Manufacturer/QueryResult/EditableManufacturer.php (with associations)

3. List query (assess first)

Most PS grids use SearchCriteria + grid QueryBuilder directly — no explicit CQRS query class needed.

Check the domain convention before creating a list query:

• If the domain uses SearchCriteria + QueryBuilder in the grid: skip this step
• If the domain uses an explicit query: create Get{Domain}sForListing.php with SearchCriteria parameter

Reference: Most domains (Tax, Manufacturer, Category) use the grid QueryBuilder pattern without an explicit list query.

4. Query handler interfaces

Create in src/Core/Domain/{Domain}/QueryHandler/:

• Get{Domain}ForEditingHandlerInterface with handle(Get{Domain}ForEditing $query): Editable{Domain}
• If list query exists, create corresponding interface
• Query handlers always return data (typed DTO or array) — never void

Rules

Conventions (scalar-only DTOs, read-only queries) are in CQRS/CONTEXT.md. Skill-specific reminders:

• Map ALL editable fields in the DTO — missing fields cause empty form fields on edit
• Return typed DTOs, not ObjectModel instances