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refactor: optimized query

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This commit is contained in:
Sergey Yarkov 2021-11-25 20:35:17 +03:00
parent a4adf27831
commit ef2cc11041
1 changed files with 13 additions and 9 deletions
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22
app/Services/LessonService.ts
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@ -1,12 +1,12 @@
import { inject, Ioc } from '@adonisjs/core/build/standalone';
import { HttpContextContract } from '@ioc:Adonis/Core/HttpContext';
import Database from '@ioc:Adonis/Lucid/Database';
/**
* Datatypes
*/
import HttpStatusEnum from 'App/Datatypes/Enums/HttpStatusEnum';
import IResponse from 'App/Datatypes/Interfaces/IResponse';
import Lesson from 'App/Models/Lesson';
import LessonMaterial from 'App/Models/LessonMaterial';
/**
@ -271,14 +271,18 @@ export default class LessonService {
/**
* Update order of lessons
*/
// TODO can be transformed into one query
await Promise.all(
ids.map(async (id, i) => {
await Lesson.query()
.where('id', id)
.update({ display_order: i + 1 });
})
);
const params = ids
.map((id, i) => ({ id, i: i + 1 }))
.reduce((result: Array<number | string>, { id, i }) => result.concat(id, i), []);
const query = `
UPDATE lessons
SET display_order = t.display_order
FROM (VALUES ${ids.map(() => `(?, ??)`).join(',')}) as t(id, display_order)
WHERE t.id = lessons.id
`;
await Database.rawQuery(query, params);
return {
success: true,