text: const router = require('express').Router();
  const { Category, Product } = require('../../models');
  
  // The `/api/categories` endpoint
  
  router.get('/', (req, res) => {
    // find all categories
    // be sure to include its associated Products
    Category.findAll(
      {
        include: {
          model: Product,
          // attributes: ['product_name']
        }
      }
    ).then(data => res.json(data))
      .catch(err => {
        console.log(err);
        res.status(500).json(err);
      });
  });
  
  router.get('/:id', (req, res) => {
    // find one category by its `id` value
    // be sure to include its associated Products
    Category.findOne({
      where:
      {
        id: req.params.id
      },
      include:
        [{ model: Product }]
    }).then(data => { res.json(data); })
      .catch(err => {
        console.log(err);
        res.status(400).json(err);
      });
  });
  
  router.post('/', (req, res) => {
    // create a new category
    Category.create({
      category_name: req.body.category_name
    })
      .then(data => res.json(data))
      .catch(err => {
        console.log(err);
        res.status(500).json(err);
      });
  });
  
  router.put('/:id', (req, res) => {
    // update a category by its `id` value
    Category.update(
      {
        category_name: req.body.category_name
      },
      {
        where: {
          id: req.params.id
        }
      })
      .then(data => {
        if (!data) {
          res.status(404).json({ message: 'No Category found with that ID.' });
          return;
        }
        res.json(data);
      })
      .catch(err => {
        console.log(err);
        res.status(500).json(err);
      });
  });
  
  router.delete('/:id', (req, res) => {
    // delete a category by its `id` value
    Category.destroy({
      where: {
        id: req.params.id
      }
    })
      .then(data => {
        if (!data) {
          res.status(404).json({ message: 'No Category found with that ID.' });
          return;
        }
        res.json(data);
      })
      .catch(err => {
        console.log(err);
        res.status(500).json(err);
      });
  });
  
  module.exports = router;
  