MySQL 使用 Prisma 的锻炼应用架构

Question

我正在使用 MySQL 和 Prisma 创建一个锻炼应用程序，我正在努力为数据设计一个模式。

该应用程序将包含用户和锻炼程序。例如，锻炼计划 'Get Jacked' 可以包含 3 个区块（每个区块为 1 个月）。每个块每周将包含 5 次锻炼，每次锻炼将包含多次锻炼和一次热身。需要注意的一些重要事项：每个用户都应该能够记录锻炼中每个锻炼的个人设置和重复次数。他们还应该能够完成一个计划 ('Get Jacked')，次数不限，每次他们都应该能够记录他们的次数和组数的新值。

到目前为止，这是我的模型：

model User {
  id      Int      @id @default(autoincrement())
  email   String   @unique
  name    String?
  role    Role     @default(USER)
  workouts   Workout[]
}

model Program {
  id         Int        @id @default(autoincrement())
  createdAt  DateTime   @default(now())
  name       String
  published  Boolean    @default(false)
  author     User       @relation(fields: [authorId], references: [id])
  authorId   Int
}

model Block {
  id         Int        @id @default(autoincrement())
  name       String
  program    Program    @relation(fields: [programId], references: [id])
  programId  Int
}

model Workout {
  id         Int        @id @default(autoincrement())
  name       String
  week       String
  day        String
  block      Block    @relation(fields: [blockId], references: [id])
  blockId    Int
}

model WorkoutSet {
  id         Int        @id @default(autoincrement())
  name       String
  sets       Int
  reps       Int
  workout    Workout   @relation(fields: [workoutId], references: [id])
  workoutId  Int
  exercise   Exercise   @relation(fields: [exerciseId], references: [id])
  exerciseId Int
}

model Exercise {
  id         Int        @id @default(autoincrement())
  name       String
}

model LogWorkout {
  id         Int        @id @default(autoincrement())
  createdAt  DateTime   @default(now())
  workout    Workout    @relation(fields: [workoutId], references: [id])
  workoutId  Int
}

model LogWorkoutSet {
  id         Int        @id @default(autoincrement())
  createdAt  DateTime   @default(now())
  sets       Int
  reps       Int
  weight     Int
  logWorkout LogWorkout @relation(fields: [logWorkoutId], references: [id])
  logWorkoutId   Int
  workoutSet     User       @relation(fields: [workoutSetId], references: [id])
  workoutSetId   Int
}

我对关系数据库比较陌生，我似乎无法理解的是代表的记录如何与用户联系起来以及用户如何多次完成锻炼计划。

如有任何帮助，我们将不胜感激。

谢谢，亚当

Answer 1

你越来越接近了，只是一些建议：

将 VSCode 与 Prisma 扩展一起使用，它将帮助您轻松格式化关系并更快地发现错误
声明关系的双方
尝试将您的数据库模型抽象为易于理解的概念，这样以后维护起来会更容易

这可能是您想要的：

// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

datasource db {
  provider = "mysql"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model User {
  id             Int              @id @default(autoincrement())
  email          String           @unique
  name           String?
  role           Role             @default(USER)
  programs       Program[]
  programRecords ProgramRecord[]
  exercises      ExerciseRecord[]
}

// Programs available
model Program {
  id        Int             @id @default(autoincrement())
  name      String
  published Boolean         @default(false)
  authorId  Int
  author    User            @relation(fields: [authorId], references: [id])
  blocks    Block[]
  records   ProgramRecord[]
  createdAt DateTime        @default(now())
}

// Blocks within a program
model Block {
  id        Int       @id @default(autoincrement())
  name      String
  programId Int
  program   Program   @relation(fields: [programId], references: [id])
  workouts  Workout[]
}

// Workouts within a block
model Workout {
  id        Int                 @id @default(autoincrement())
  name      String
  week      String
  day       String
  blockId   Int
  block     Block               @relation(fields: [blockId], references: [id])
  exercises ExerciseOnWorkout[]
}

// Exercises to be done in workout (Relation table)
model ExerciseOnWorkout {
  id         Int              @id @default(autoincrement())
  workoutId  Int
  workout    Workout          @relation(fields: [workoutId], references: [id])
  exerciseId Int
  exercise   Exercise         @relation(fields: [exerciseId], references: [id])
  name       String
  sets       Int
  reps       Int
  weight     Int
  records    ExerciseRecord[]
  createdAt  DateTime         @default(now())

  // Restrict to do not repeat combinations with same name
  @@unique([workoutId, exerciseId, name])
}

// Exercise options
model Exercise {
  id       Int                 @id @default(autoincrement())
  name     String
  workouts ExerciseOnWorkout[]
}

// New "enrollment" record of a user in a program
model ProgramRecord {
  id              Int              @id @default(autoincrement())
  programId       Int
  program         Program          @relation(fields: [programId], references: [id])
  userId          Int
  user            User             @relation(fields: [userId], references: [id])
  exerciseRecords ExerciseRecord[]
  // TODO: You could track the status to prevent users starting a new one
  isComplete      Boolean          @default(false)
  createdAt       DateTime         @default(now())
}

// User personal record for a workout exercise
model ExerciseRecord {
  id              Int               @id @default(autoincrement())
  userId          Int
  user            User              @relation(fields: [userId], references: [id])
  exerciseId      Int
  exercise        ExerciseOnWorkout @relation(fields: [exerciseId], references: [id])
  programRecordId Int
  programRecord   ProgramRecord     @relation(fields: [programRecordId], references: [id])
  name            String
  sets            Int
  reps            Int
  weight          Int
  createdAt       DateTime          @default(now())

  @@unique([userId, exerciseId, programRecordId, name])
}

enum Role {
  USER
}

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