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kennethobsequioandClaude Sonnet 5
eaa6d2276a
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
33 lines
1.7 KiB
JavaScript
33 lines
1.7 KiB
JavaScript
/***********************************************************************************************************************************************************************
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* File Name: course_units.mdl.js
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* Type of Program: Model (junction)
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* Description: Attaches a standalone Unit to a Course. A Unit can live in many
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* Courses; per-course ordering lives here (order_index), not on the
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* Unit itself. Detaching removes the row — the Unit survives.
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*
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* Author: Kenneth Obsequio (@lash0000)
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* Date Created: Jul. 7, 2026
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***********************************************************************************************************************************************************************/
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const { DataTypes } = require("sequelize");
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const sequelize = require("../../config/db.config");
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const CourseUnit = sequelize.define("CourseUnit", {
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course_unit_id: { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true },
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course_id: { type: DataTypes.BIGINT, allowNull: false },
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unit_id: { type: DataTypes.BIGINT, allowNull: false },
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order_index: { type: DataTypes.INTEGER, allowNull: false, defaultValue: 0 },
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createdBy: { type: DataTypes.BIGINT, allowNull: true },
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updatedBy: { type: DataTypes.BIGINT, allowNull: true },
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}, {
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tableName: "course_units",
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timestamps: true,
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indexes: [
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{ unique: true, fields: ["course_id", "unit_id"], name: "uq_course_units_course_unit" },
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{ fields: ["course_id"], name: "idx_course_units_course_id" },
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{ fields: ["unit_id"], name: "idx_course_units_unit_id" },
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{ fields: ["order_index"], name: "idx_course_units_order" },
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],
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});
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module.exports = CourseUnit;
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