Add posts migration and relation

Sources/App/Migrations/002_CreateRegisteredUser.swift

@@ -24,6 +24,7 @@ struct CreateRegisteredUser: Migration {
             .field("id", .int, .custom("GENERATED ALWAYS AS IDENTITY"))
             .unique(on: "collegeId")
             .unique(on: "email")
+            .unique(on: "id")
             .create()
     }
 

Sources/App/Migrations/004_CreatePosts.swift

@@ -11,7 +11,7 @@ struct CreatePosts: Migration {
     func prepare(on database: Database) -> EventLoopFuture<Void> {
         return database.schema("posts")
             .field("id", .string, .required)
-            .field("user", .int, .required, .references("registeredUsers", "regNo"))
+            .field("userId", .int, .required, .references("registeredUsers", "id"))
             .field("content", .string, .required)
             .field("created_at", .datetime, .required)
             .field("deleted", .bool, .required)

Sources/App/Models/Post.swift

@@ -14,8 +14,8 @@ final class Post: Model, Content {
     @ID(custom: "id", generatedBy: .user)
     var id: String?
 
-    @Field(key: "user")
-    var user: Int
+    @Parent(key: "userId")
+    var user: RegisteredUser
 
     @Field(key: "content")
     var content: String
@@ -30,9 +30,9 @@ final class Post: Model, Content {
     }
 
     // TODO: attachments (media), comments enabled, edited
-    init(id: String, regNo user: Int, content: String) {
+    init(id: String, userId: Int, content: String) {
         self.id = id
-        self.user = user
+        self.$user.id = userId
         self.content = content
         self.deleted = false
     }

Sources/App/configure.swift

@@ -56,6 +56,7 @@ public func configure(_ app: Application) async throws {
     app.migrations.add(CreateUser())
     app.migrations.add(CreateRegisteredUser())
     app.migrations.add(CreateUserAuth())
+    app.migrations.add(CreatePosts())
 
     app.jwt.google.gSuiteDomainName = AppConfig.googleWorkspaceDomain
     app.jwt.signers.use(.hs256(key: AppConfig.jwtSigningKey))