Xây dựng file model car.js - Xây dựng API backend quản lý Car bằng server nodejs

Tại thư mục admin/apps/ecommerce/models

Tên file: car.js

Nội dung file:

var modelbackenditem = require(`${path_root}/lib/mvc/models/modelbackenditem`);
var model = require(`${path_root}/lib/mvc/models/model`);
const factory = require(`${path_root}/lib/Factory.js`);
class car extends modelbackenditem {
    tableName() {
        return "cars";
    }
    formXmlName() {
        return "car";
    }
    async getItem(req, res, next,id) {
        const input = factory.getInput(req);
        if(typeof id==="undefined"){
            id=input.getString("id","");
        }
        const car= await super.getItem(req, res, next,id);
        car.image=await this.getImageByCarId(req, res, next,car._id.toString());
        return car
    }
    async getImageByCarId(req, res, next,img_parent_id) {
        const db = req.app.db;
        const item = await db.images.findOne(
            {
                img_parent_id: img_parent_id.toString(),
                img_type:"car-image"
            }
            );
        if (!item) {
            // If API request, return json
            if (req.apiAuthenticated) {
                res.status(400).json({message: 'Item not found'});
                return null;
            }
            req.session.message = 'Item not found';
            req.session.messageType = 'danger';
            return null;
        }

        return item;
    }
    async save(data) {
        let car=await super.save(data);
        const imageModel=model.getInstance('image',0,req, res, next);
        let current_image=await imageModel.getImageBycarId(this.req, this.res, this.next,car._id);
        let car_id=car._id;
        if (!this.req.files || Object.keys(this.req.files).length === 0) {

        }

        if(this.req.files !== null && typeof this.req.files.image !=="undefined") {
            // The name of the input field (i.e. "sampleFile") is used to retrieve the uploaded file
            let image = this.req.files.image;
            // Use the mv() method to place the file somewhere on your server
            let img_path = `backend/images/${image.name}`;
            const modelImage = model.getInstance("image", 1, this.req, this.res, this.next);
            image.mv(`${path_root}/public/${img_path}`, async function (err) {
                if (err) {
                    //return this.res.status(500).send(err);
                }
            });
            let data_image = {
                "_id": "",
                "img_id": "",
                "img_parent_id": car_id,
                "img_type": "",
                "img_path": img_path,
                "Img_width": "",
                "img_height": "",
                "img_desc": "",
            };
            if(typeof current_image!=="undefined"){
                data_image['_id']=current_image._id
            }
            data_image = await modelImage.save(data_image);
            car.default_photo = data_image;
        }
        return  car;
    }


}
module.exports = car;