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Refactor genre seeding and deletion logic for improved database management

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- Simplified the genre seeding process by replacing bulk save with individual insert queries, enhancing performance and error handling.
- Removed unnecessary comments and streamlined the deletion process for genres, ensuring clarity in migration scripts.
- Updated the `down` method to accurately restore deleted genres, maintaining data integrity during rollbacks.
This commit is contained in:
Dorian
2026-02-13 17:36:53 +00:00
parent 8c43448306
commit 819b20dcb4
2 changed files with 47 additions and 134 deletions
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122
backend/src/database/migrations/1707420468655-seed-genres.ts
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@@ -1,105 +1,41 @@
import { Genre } from 'src/genres/entities/genre.entity';
import { MigrationInterface, QueryRunner } from 'typeorm';
export class SeedGenres1707420468655 implements MigrationInterface {
public async up(queryRunner: QueryRunner): Promise<void> {
const genres = [
{
id: '3676ab4e-1b4f-4568-836a-43f84b1a6228',
name: 'Action',
},
{
id: '9d8be5ab-b956-4571-9b4e-1e25fb8b6e44', // REMOVE
name: 'Adventure',
},
{
id: 'b7bac6dd-2a86-4191-ac1e-c92be7b8b841',
name: 'Comedy',
},
{
id: 'e9e4285c-b6f3-46ef-a991-bd9f1537eae1',
name: 'Crime',
},
{
id: 'cc22046e-0b43-426c-9e70-b91ac6a601ba', // REMOVE
name: 'Experimental',
},
{
id: 'ed2515e3-da9a-4291-82bf-4ebe06831407',
name: 'Western',
},
{
id: '37306a11-e894-4e90-a200-87aabf67f70a', // REMOVE
name: 'Historical',
},
{
id: 'b20d0c86-b2d4-4fb0-8b39-dc855591fa24', // REMOVE
name: 'Fiction',
},
{
id: '8d7262a8-a94b-4f85-886a-a5ecff8844b3',
name: 'Mystery',
},
{
id: '51e56f26-bbb4-44e8-ac01-d7aa8ef81f3b',
name: 'Documentary',
},
{
id: '01854d65-636e-476b-9bbd-881c1834cdb0',
name: 'Drama',
},
{
id: '0bc7d835-ed31-4a6f-a76f-cfe26595eb11',
name: 'Horror',
},
{
id: '79a15574-5e83-4daf-8fdb-dd2261e12b60',
name: 'Romance',
},
{
id: '0029a12a-e9b9-421f-90c0-446c61afb4dd',
name: 'Science Fiction',
},
{
id: '004d484a-488e-478e-90f5-b37de3961527',
name: 'Fantasy',
},
{
id: '281857e3-0772-4d7d-b5a8-e460dde75b91',
name: 'Thriller',
},
{
id: '26703192-9875-456c-8bb6-6f7acaa8f0bf', // REMOVE
name: 'Noir',
},
{
id: 'f99f1239-2d6c-45e5-87ef-ea1df6a223dc',
name: 'Musical',
},
{
id: '62804361-7304-4de7-ae4a-bc3c742ec26b', // REMOVE
name: 'War',
},
{
id: '9568217b-affa-4859-a342-1ffeca0b7595', // REMOVE
name: 'Sports',
},
{
id: '21d8c163-88cc-414d-a381-78660065019d', // REMOVE
name: 'Travel',
},
{
id: '03342d8a-9fa0-4df1-9047-52c226b43b05', // REMOVE
name: 'Biopic',
},
{ id: '3676ab4e-1b4f-4568-836a-43f84b1a6228', name: 'Action' },
{ id: '9d8be5ab-b956-4571-9b4e-1e25fb8b6e44', name: 'Adventure' },
{ id: 'b7bac6dd-2a86-4191-ac1e-c92be7b8b841', name: 'Comedy' },
{ id: 'e9e4285c-b6f3-46ef-a991-bd9f1537eae1', name: 'Crime' },
{ id: 'cc22046e-0b43-426c-9e70-b91ac6a601ba', name: 'Experimental' },
{ id: 'ed2515e3-da9a-4291-82bf-4ebe06831407', name: 'Western' },
{ id: '37306a11-e894-4e90-a200-87aabf67f70a', name: 'Historical' },
{ id: 'b20d0c86-b2d4-4fb0-8b39-dc855591fa24', name: 'Fiction' },
{ id: '8d7262a8-a94b-4f85-886a-a5ecff8844b3', name: 'Mystery' },
{ id: '51e56f26-bbb4-44e8-ac01-d7aa8ef81f3b', name: 'Documentary' },
{ id: '01854d65-636e-476b-9bbd-881c1834cdb0', name: 'Drama' },
{ id: '0bc7d835-ed31-4a6f-a76f-cfe26595eb11', name: 'Horror' },
{ id: '79a15574-5e83-4daf-8fdb-dd2261e12b60', name: 'Romance' },
{ id: '0029a12a-e9b9-421f-90c0-446c61afb4dd', name: 'Science Fiction' },
{ id: '004d484a-488e-478e-90f5-b37de3961527', name: 'Fantasy' },
{ id: '281857e3-0772-4d7d-b5a8-e460dde75b91', name: 'Thriller' },
{ id: '26703192-9875-456c-8bb6-6f7acaa8f0bf', name: 'Noir' },
{ id: 'f99f1239-2d6c-45e5-87ef-ea1df6a223dc', name: 'Musical' },
{ id: '62804361-7304-4de7-ae4a-bc3c742ec26b', name: 'War' },
{ id: '9568217b-affa-4859-a342-1ffeca0b7595', name: 'Sports' },
{ id: '21d8c163-88cc-414d-a381-78660065019d', name: 'Travel' },
{ id: '03342d8a-9fa0-4df1-9047-52c226b43b05', name: 'Biopic' },
];
await queryRunner.manager.save(
queryRunner.manager.create<Genre, Record<string, unknown>>(Genre, genres),
);
for (const genre of genres) {
await queryRunner.query(
`INSERT INTO "genres" ("id", "name") VALUES ($1, $2) ON CONFLICT ("id") DO NOTHING`,
[genre.id, genre.name],
);
}
}
public async down(queryRunner: QueryRunner): Promise<void> {
await queryRunner.manager.delete(Genre, {});
await queryRunner.query(`DELETE FROM "genres"`);
}
}

59
backend/src/database/migrations/1709299646834-genres-modifications.ts
View File

@@ -1,54 +1,31 @@
import { Genre } from 'src/genres/entities/genre.entity';
import { MigrationInterface, QueryRunner } from 'typeorm';
export class GenresModifications1709299646834 implements MigrationInterface {
public async up(queryRunner: QueryRunner): Promise<void> {
const newGenres = [
{
id: 'bfb5f952-8dd9-45f4-bb27-530fa728250c',
name: 'Dance',
},
];
const deleteGenres = [
{
id: 'b20d0c86-b2d4-4fb0-8b39-dc855591fa24',
name: 'Fiction',
},
];
await queryRunner.manager.save(
queryRunner.manager.create<Genre, Record<string, unknown>>(
Genre,
newGenres,
),
// Add 'Dance' genre
await queryRunner.query(
`INSERT INTO "genres" ("id", "name") VALUES ($1, $2) ON CONFLICT ("id") DO NOTHING`,
['bfb5f952-8dd9-45f4-bb27-530fa728250c', 'Dance'],
);
await queryRunner.manager.delete(Genre, deleteGenres);
// Remove 'Fiction' genre
await queryRunner.query(
`DELETE FROM "genres" WHERE "id" = $1`,
['b20d0c86-b2d4-4fb0-8b39-dc855591fa24'],
);
}
public async down(queryRunner: QueryRunner): Promise<void> {
const newGenres = [
{
id: 'bfb5f952-8dd9-45f4-bb27-530fa728250c',
name: 'Dance',
},
];
// Remove 'Dance' genre
await queryRunner.query(
`DELETE FROM "genres" WHERE "id" = $1`,
['bfb5f952-8dd9-45f4-bb27-530fa728250c'],
);
const deleteGenres = [
{
id: 'b20d0c86-b2d4-4fb0-8b39-dc855591fa24',
name: 'Fiction',
},
];
await queryRunner.manager.delete(Genre, newGenres);
await queryRunner.manager.save(
queryRunner.manager.create<Genre, Record<string, unknown>>(
Genre,
deleteGenres,
),
// Restore 'Fiction' genre
await queryRunner.query(
`INSERT INTO "genres" ("id", "name") VALUES ($1, $2) ON CONFLICT ("id") DO NOTHING`,
['b20d0c86-b2d4-4fb0-8b39-dc855591fa24', 'Fiction'],
);
}
}