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Chapter 10 of the Symfony for PHP developers track

The life of a reservation

6 exercises · 1,730 XP · about 4 h 30 min

This chapter works on: MailerMailerInterfaceEmailMAILER_DSNassertEmailCountTemplatedEmailTwig email templateurl() and path()Sending serviceWorkflowState machinePlaces and transitionsmarking_storeinitial_markingTransitions from a controllerGuards#[AsGuardListener]TransitionBlockerworkflow_transitions()Workflow events#[AsEnteredListener]entered and leaveDebugging

The chapter's exercises

  1. The first scroll

    Exercise 1 · 270 XP · 5 objectives checked by tests

    Reservations made on the website are now saved: Pippin added the traveler's email address and the day of the visit to the form. One thing is missing, the house's good manners: a confirmation scroll, sent for every reservation.

    MailerMailerInterfaceEmailMAILER_DSNassertEmailCount

  2. A scroll with style

    Exercise 2 · 270 XP · 5 objectives checked by tests

    The confirmation scroll does go out, but Bruna finds it dull: three lines of text, not a single dragon. She wants a real scroll, laid out properly, with a link to discover the menu.

    TemplatedEmailTwig email templateurl() and path()Sending service

  3. The life of a reservation

    Exercise 3 · 280 XP · 5 objectives checked by tests

    A reservation has a life: requested by a traveler, confirmed by the tavern, then honored when the evening comes. Unless someone cancels it in the meantime. Today, nothing prevents it from being honored without having been confirmed, or canceled after the meal.

    WorkflowState machinePlaces and transitionsmarking_storeinitial_marking

  4. Gorm's reservation book

    Exercise 4 · 290 XP · 5 objectives checked by tests

    Gorm keeps the reservation book in an old notebook full of crossings-out. Pippin has prepared a page for him, /kitchen/reservations, which lists the reservations and offers a button for each possible transition. All that is left is to make these buttons work, and to set two house rules:

    Transitions from a controllerGuards#[AsGuardListener]TransitionBlockerworkflow_transitions()

  5. Scrolls from the reservation book

    Exercise 5 · 280 XP · 5 objectives checked by tests

    There is a problem in the tavern: the traveler receives “Your table awaits” as soon as they fill in the form. But nothing is confirmed yet: Gorm can still turn the reservation down, on a fully booked feast night. And when he cancels a reservation, the traveler knows nothing about it.

    Workflow events#[AsEnteredListener]entered and leaveMailer

  6. 🐉 Boss: the misplaced scrolls

    Exercise 6 · 340 XP · 5 objectives checked by tests

    Pippin “simplified” the reservation book while Gorm was away at the beer fair. Since then:

    DebuggingWorkflowGuardsWorkflow eventsMailer