🗃️ Add delete cascade for episodes and webtoons

Open-Webtoon-Reader · May 18, 2024 · a5b69cc · a5b69cc
1 parent 00878cf
commit a5b69cc
Show file tree

Hide file tree

Showing 2 changed files with 45 additions and 3 deletions.
diff --git a/prisma/migrations/20240518080728_delete_cascade/migration.sql b/prisma/migrations/20240518080728_delete_cascade/migration.sql
@@ -0,0 +1,42 @@
+-- RedefineTables
+PRAGMA foreign_keys=OFF;
+CREATE TABLE "new_webtoon_genres" (
+    "webtoon_id" INTEGER NOT NULL,
+    "genre_id" INTEGER NOT NULL,
+
+    PRIMARY KEY ("webtoon_id", "genre_id"),
+    CONSTRAINT "webtoon_genres_webtoon_id_fkey" FOREIGN KEY ("webtoon_id") REFERENCES "webtoons" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "webtoon_genres_genre_id_fkey" FOREIGN KEY ("genre_id") REFERENCES "genres" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+INSERT INTO "new_webtoon_genres" ("genre_id", "webtoon_id") SELECT "genre_id", "webtoon_id" FROM "webtoon_genres";
+DROP TABLE "webtoon_genres";
+ALTER TABLE "new_webtoon_genres" RENAME TO "webtoon_genres";
+CREATE TABLE "new_episode_images" (
+    "number" INTEGER NOT NULL,
+    "episode_id" INTEGER NOT NULL,
+    "image_id" INTEGER NOT NULL,
+
+    PRIMARY KEY ("episode_id", "number"),
+    CONSTRAINT "episode_images_episode_id_fkey" FOREIGN KEY ("episode_id") REFERENCES "episodes" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "episode_images_image_id_fkey" FOREIGN KEY ("image_id") REFERENCES "images" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+INSERT INTO "new_episode_images" ("episode_id", "image_id", "number") SELECT "episode_id", "image_id", "number" FROM "episode_images";
+DROP TABLE "episode_images";
+ALTER TABLE "new_episode_images" RENAME TO "episode_images";
+CREATE TABLE "new_episodes" (
+    "id" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    "title" TEXT NOT NULL,
+    "number" INTEGER NOT NULL,
+    "webtoon_id" INTEGER NOT NULL,
+    "thumbnail_id" INTEGER NOT NULL,
+    CONSTRAINT "episodes_webtoon_id_fkey" FOREIGN KEY ("webtoon_id") REFERENCES "webtoons" ("id") ON DELETE CASCADE ON UPDATE CASCADE,
+    CONSTRAINT "episodes_thumbnail_id_fkey" FOREIGN KEY ("thumbnail_id") REFERENCES "images" ("id") ON DELETE RESTRICT ON UPDATE CASCADE
+);
+INSERT INTO "new_episodes" ("id", "number", "thumbnail_id", "title", "webtoon_id") SELECT "id", "number", "thumbnail_id", "title", "webtoon_id" FROM "episodes";
+DROP TABLE "episodes";
+ALTER TABLE "new_episodes" RENAME TO "episodes";
+CREATE UNIQUE INDEX "episodes_webtoon_id_number_key" ON "episodes"("webtoon_id", "number");
+PRAGMA foreign_key_check("webtoon_genres");
+PRAGMA foreign_key_check("episode_images");
+PRAGMA foreign_key_check("episodes");
+PRAGMA foreign_keys=ON;
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
@@ -47,7 +47,7 @@ model Genres {
 model WebtoonGenres {
   webtoon_id Int
   genre_id   Int
-  webtoon    Webtoons @relation(fields: [webtoon_id], references: [id])
+  webtoon    Webtoons @relation(fields: [webtoon_id], references: [id], onDelete: Cascade)
   genre      Genres   @relation(fields: [genre_id], references: [id])
 
   @@id([webtoon_id, genre_id])
@@ -79,7 +79,7 @@ model Episodes {
   title          String
   number         Int
   webtoon_id     Int
-  webtoon        Webtoons        @relation(fields: [webtoon_id], references: [id])
+  webtoon        Webtoons        @relation(fields: [webtoon_id], references: [id], onDelete: Cascade)
   thumbnail_id   Int
   thumbnail      Images          @relation(fields: [thumbnail_id], references: [id])
   episode_images EpisodeImages[]
@@ -91,7 +91,7 @@ model Episodes {
 model EpisodeImages {
   number     Int
   episode_id Int
-  episode    Episodes @relation(fields: [episode_id], references: [id])
+  episode    Episodes @relation(fields: [episode_id], references: [id], onDelete: Cascade)
   image_id   Int
   image      Images   @relation(fields: [image_id], references: [id])