Avoiding the mud - Symfony Live London

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AVOIDING THE MUD by Richard Miller http://www.ﬂickr.com/photos/burge5000/22568539/

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@mr_r_miller http://www.richardmiller.co.uk

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http://www.ﬂickr.com/photos/brostad/8583990904

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http://www.ﬂickr.com/photos/dominik99/384027019

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http://www.ﬂickr.com/photos/jasmeet/2158002974

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Bundles For Everything? http://www.ﬂickr.com/photos/jarkel/2288176

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Separate Domain Model From Bundles http://www.ﬂickr.com/photos/30666161@N05/3705814710

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HumanResourcesBundle

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HumanResourcesBundle HumanResources

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HumanResourcesBundle HumanResources

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http://www.ﬂickr.com/photos/26582481@N08/3040936355 Enough?

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Still Tightly Coupled

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AbsenceEntity Request Absence Form Cancel Absence Form Approve Absence Form Change Absence Type Form

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Sensio\HumanResources\Absence\AbsenceEntity: properties: reason: - NotBlank: { groups: [cancellation] } - Length: { max: 300, groups: [cancellation] }

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AbsenceEntity Request Absence Form Cancel Absence Form Approve Absence Form Change Absence Type Form Request Absence Command Cancel Absence Command Approve Absence Command Change Absence Type Command

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What About Templates?

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AbsenceEntity upcoming .html .twig details .html .twig calendar .html .twig unapproved .html .twig

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{% if absence.endDate < date() %} past {% else %} absence.status {% endif %} getDisplayStatus() AbsenceEntity getEndDate() getStatus()

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{% if absence.endDate < date() %} past {% else %} absence.status {% endif %} getDisplayStatus() AbsenceEntity getEndDate() getStatus()

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{{ absence.displayStatus }} getDisplayStatus() AbsenceEntity getEndDate() getStatus() getDisplayStatus()

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{{ absence.displayStatus }} getDisplayStatus() AbsenceEntity getEndDate() getStatus() getDisplayStatus()

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AbsenceEntity Request Absence Form Cancel Absence Form Approve Absence Form Change Absence Type Form Absence View upcoming .html .twig details .html .twig calendar .html .twig unapproved .html .twig

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AbsenceEntity Request Absence Form Cancel Absence Form Approve Absence Form Change Absence Type Form Absence View upcoming .html .twig details .html .twig calendar .html .twig unapproved .html .twig getStatus()

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Unapproved Absence View Calendar View AbsenceEntity Request Absence Form Cancel Absence Form Approve Absence Form Change Absence Type Form Upcoming Absences View Absence Details View upcoming .html .twig details .html .twig calendar .html .twig unapproved .html .twig

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SRP

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Behaviour Not State

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Request Absence Controller Absence Entity setReason($reason) setStatus(AbsenceEntity::CANCELLED) setCancellationDate(new DateTime()) Cancel Absence Command getReason()

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Request Absence Controller Absence Entity cancel($reason) Cancel Absence Command getReason()

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Cancel Absence Command Absence Entity Validate internal consistency Validate user input

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CancelAbsenceComm andHandler Cancel Absence Command Handler AbsenceEntity cancel($reason) handle($command) Request Absence Controller Absence Entity cancel($reason) Cancel Absence Command

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Infrastructure?

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Absence Repository (Interface) findById($id) findUpcomingByMember($member) findAllByMember($member) Doctrine ORM Absence Repository Doctrine ODM Absence Repository Guzzle Client Absence Repository Infrastructure Domain

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AbsenceEntity Absence Repository Domain Bundle Service Conﬁg Infrastructure Doctrine ORM Absence Repository Mapping Conﬁg

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Absence Repository (Interface) findById($id) findUpcomingByMember($member) findAllByMember($member) add(AbsenceEntity $absence)

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Events

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OnUpdate Event AbsenceEntity Dispatches

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OnUpdate Event AbsenceEntity Dispatches

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Absence Cancelled Event Cancel Absence Command Handler Dispatches

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Absence Cancelled Event In Memory Listener Immediate Action Place In Messaging Queue Listens

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Absence Cancelled Event Flush Listener Listens Absence Approved Event Domain Infrastructure Listens

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Separating Commands From Queries

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Command Command Handler Entity Datastore

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Datastore View Datastore View Datastore Command Command Handler Entity Event

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Datastore View Datastore View Datastore Command Command Handler Entity View Template Event

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Separating Bundles Horizontally

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Non-application Specific Code

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HumanResources CustomLoggingBundle HumanResourcesBundle

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HumanResourcesBundle HumanResources CustomLoggingBundle CustomLogging CustomLoggingBundle CustomLoggingBundle CustomLogging HumanResourcesBundle

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HumanResources CustomLoggingBundle CustomLogging CustomLoggingBundle CustomLoggingBundle CustomLogging If it must! HumanResourcesBundle

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HumanResources CustomLoggingBundle CustomLogging CustomLoggingBundle CustomLoggingBundle CustomLogging HumanResourcesBundle

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Separating By Context

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AbsencePlannerBundle AbsencePlanner CustomLoggingBundle CustomLogging CustomLoggingBundle RecruitmentBundle Recruitment

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Message Queue/REST AbsencePlannerBundle AbsencePlanner CustomLoggingBundle CustomLogging CustomLoggingBundle RecruitmentBundle Recruitment

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CustomLoggingBundle CustomLogging CustomLoggingBundle RecruitmentBundle Recruitment Off the shelf Package Message Queue/REST Message Queue/REST AbsencePlannerBundle AbsencePlanner

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Separate Commonality

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AbsencePlannerBundle AbsencePlanner RecruitmentBundle Recruitment AbsencePlannerBundle AbsencePlanner CustomLoggingBundle CustomLogging CustomLoggingBundle RecruitmentBundle Recruitment User Management

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!= Staff Member Entity User Entity

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AbsencePlannerBundle AbsencePlanner AbsencePlannerBundle AbsencePlanner CustomLoggingBundle CustomLogging CustomLoggingBundle RecruitmentBundle Recruitment UserManagementBundle

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Now?

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http://www.ﬂickr.com/photos/mtsofan/8313606885

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https://github.com/beberlei/litecqrs-php http://behat.org/

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http://williamdurand.fr/ http://verraes.net/#blog http://www.whitewashing.de/

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QUESTIONS?