Trails Exercise

Feature 1

Requirements

3 models

• Person (people table)
• Trail (trails table)
• Practice (practices tables)

Person model

• has age, body-build (slim, fit, large)
• can start practice on any trail
• given he/she has passed the criteria of a trail
• given he/she is not already starting a practice on a trail
• can finish practice on a trail
• given he/she is starting this particular trail
• can see all trails finished
• can see all uncompleted trails

Trail model

• has pass criteria depending on age, body-build
• can see people who have finished this trail
• can see people who have started the trail
• can see people who can start the trail

Practice model

• has the status field of person/trail

Diagram

Feature 2

Requirements

2 models

• Race (table races)
• Run (table runs)

Race model

• belongs to a Trail
• can register People to join
• can start/end a race
  • State is manually changed (new → started, started → finished)
• can't start if less than 2 People registered
• when a Race finishes, assign random duration and status (finished or unfinished) for the racers
  • declare the fastest runner as winner
• Can only have 1 winner

Run model

• States: Registered and Dropped (manually changed), Finished and Unfinished (randomly assigned when Race has ended)

Rules

• Trail can have multiple Races but should have different time slots
• Person should have a finished Practice for the Trail before becoming eligible to register for a Race
• Person can only register for a Race once.
• Person cannot register for a Race if there is an ongoing Practice.
• Person cannot also start a Practice if there is an ongoing Race.
• Person cannot register when Race is already starting or finished
• Person can register for another Race:
  • For the same Trail (since none of the Races per Trail would overlap)
  • For another Trail but should not overlap with currently registered Race

Additional

• Add view on Trail for races list
• Add view on Person for races list
• Add view for Races via navbar
• Don't update Race details if runners have already registered

Diagram

Attributions

• User icons created by Freepik - Flaticon
• Road icons created by Smashicons - Flaticon
• Race icons created by Good Ware - Flaticon