php-ddd

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Creating aggregates and enforcing invariants spanning multiple aggregates

5

Given is an event-sourced `EmploymentContract` holding an `EmploymentPeriod` with a start and end date. It is then possible to "deploy employees of a contract to other work places". *But the...

webdevilopers

Primitive types only in command

13

When I started decoupling from Symfony Form and the `EntityType` I switched to primitive types only that would then be used on the `data_class` which is the Command / DTO....

webdevilopers

Enriching / Fat Events and Event Handler / Projector - TELL, DON'T ASK

10

I have an `Inspection` Domain Model with a lot of properties, some of them nested. A new Inspection is handled by a Command Handler. The Inspection AR then raises an...

webdevilopers

Hiding technical implementation for uploading Files with Metadata using MongoDB GridFS

3

Code examples: * https://gist.github.com/webdevilopers/160409917c942e0ba83ba948250aec18 Doctrine MongoDB offers a Default GridFS Repository to upload files and map them to a MongoDB Document. This document has default fields e.g. "uploadDate" that get...

webdevilopers

DDD directory structure using Symfony Flex (4/5)

6

Symfony 4/5 create an `App` namespace by default refering to alle files inside the `src` folder. Initially a `Controller` folder may be created. When adding the `doctrine` recipe it will...

webdevilopers

Doctrine Repositories best practice

17

For naming conventions please see: - https://github.com/dddinphp/ddd-in-php-book-issues/issues/51 Injecting `EntityManager` only and the `Law of Demeter`: - https://github.com/dddinphp/repository-examples/blob/master/src/Infrastructure/Persistence/Doctrine/DoctrinePostRepository.php#L12-17 - https://disqus.com/home/discussion/adamquaile/composition_over_inheritance_in_doctrine_repositories_72/#comment-2703359347 @adamquaile Extend the Doctrine EntityRepository as suggested by @MacDada? - https://gist.github.com/MacDada/025ef645837363fef0ec1ea0a2ead6fb...

webdevilopers

Primitives instead of value objects in Domain Events

8

Came from: * https://twitter.com/webdevilopers/status/1204375222343720960 Recently I started a symfony project w/ @prooph components. Looking at the bluebrints I recognized the creation of events has changed. ```php class User extends AggregateRoot...

webdevilopers

Validating deserialized messages (e.g. Domain Events with payload) when re-constructing Domain Models

8

When deserializing messages (e.g. Domain Events inside the same context) that hold value objects, do you still validate the given data or do you simply trust the incoming data? Currently...

webdevilopers

Protecting invariants when creating value objects through Entity or Factory

9

My original post and poll started here: https://twitter.com/webdevilopers/status/1100102866583339008 This was the original gist: * https://gist.github.com/webdevilopers/fa3bbfbb8e2b36a4a4619217e6469fdc Use case: I need to calculate a `Dormer` based on specific `DormerType` (Entity). Business rule:...

webdevilopers

Catching exceptions and converting them to Symfony form errors

3

If anywhere in your application e.g. in your Handler or `DomainModel` an Exception / `DomainException` is thrown you can catch and convert the message to use it in your Symfony...

webdevilopers