- npm updates

- renamed 'models' and 'validators' folders
- removed unneccessary files in contracts folder

app/models/subject.ts

@@ -0,0 +1,83 @@
+import { column, SnakeCaseNamingStrategy, manyToMany, computed} from '@adonisjs/lucid/orm';
+import BaseModel from './base_model.js';
+
+import { DateTime } from 'luxon';
+import dayjs from 'dayjs';
+import Dataset from './dataset.js';
+import type { ManyToMany } from "@adonisjs/lucid/types/relations";
+
+export default class Subject extends BaseModel {
+    public static namingStrategy = new SnakeCaseNamingStrategy();
+    public static table = 'dataset_subjects';
+    public static selfAssignPrimaryKey = false;
+
+    @column({
+        isPrimary: true,
+    })
+    public id: number;
+
+    @column({})
+    public language: string;
+
+    @column({})
+    public type: string;
+
+    @column({})
+    public value: string;
+
+    @column({})
+    public external_key: string;
+
+    @column.dateTime({
+        serialize: (value: Date | null) => {
+            return value ? dayjs(value).format('MMMM D YYYY HH:mm a') : value;
+        },
+        autoCreate: true,
+    })
+    public created_at: DateTime;
+
+    @column.dateTime({
+        serialize: (value: Date | null) => {
+            return value ? dayjs(value).format('MMMM D YYYY HH:mm a') : value;
+        },
+        autoCreate: true,
+        autoUpdate: true,
+    })
+    public updated_at: DateTime;
+
+    // @beforeCreate()
+    // @beforeUpdate()
+    // public static async resetDate(role) {
+    //     role.created_at = this.formatDateTime(role.created_at);
+    //     role.updated_at = this.formatDateTime(role.updated_at);
+    // }
+
+    // private static formatDateTime(datetime) {
+    //     let value = new Date(datetime);
+    //     return datetime
+    //         ? value.getFullYear() +
+    //               '-' +
+    //               (value.getMonth() + 1) +
+    //               '-' +
+    //               value.getDate() +
+    //               ' ' +
+    //               value.getHours() +
+    //               ':' +
+    //               value.getMinutes() +
+    //               ':' +
+    //               value.getSeconds()
+    //         : datetime;
+    // }
+    @computed()
+    public get dataset_count() : number{
+        const count = this.$extras.datasets_count; //my pivot column name was "stock"
+        return count;
+    }
+
+    @manyToMany(() => Dataset, {
+        pivotForeignKey: 'subject_id',
+        pivotRelatedForeignKey: 'document_id',
+        pivotTable: 'link_dataset_subjects',
+    })
+    public datasets: ManyToMany<typeof Dataset>;
+}