refactor: sequelize (#15)

README.md

@@ -3,7 +3,7 @@
 [![Hits-of-Code](https://hitsofcode.com/github/103cuong/graphql-kit)](https://hitsofcode.com/view/github/103cuong/graphql-kit)
 [![GitHub](https://img.shields.io/github/license/103cuong/graphql-kit.svg)](https://github.com/103cuong/graphql-kit/blob/master/LICENSE)
 
-> 🛸🚀 A Node kit with TypeScript, GraphQL, Sequelize, PostgreSQL and awesome tools.
+🍣 A Node kit with TypeScript, GraphQL, Sequelize, PostgreSQL and awesome tools.
 
 ## Preparation
 

package.json

@@ -2,6 +2,7 @@
   "name": "graphql-kit",
   "version": "1.0.0",
   "main": "src/index.ts",
+  "description": "🍣 A Node kit with TypeScript, GraphQL, Sequelize, PostgreSQL and awesome tools.",
   "scripts": {
     "start:dev": "nodemon --ignore build/ --exec ts-node src/index.ts",
     "prebuild": "rm -rf build",

src/index.ts

@@ -2,8 +2,7 @@ import path from 'path';
 import { logger, globalOptions } from 'juno-js';
 
 import { migrateDB, config } from './components';
-import sequelize from './models';
-import { associate } from './models/association';
+import { sequelize, associate } from './models/sequelize';
 import app from './app';
 
 globalOptions.environment = config.nodeEnv;

src/migrations/20200605151403_create_category.migration.ts

@@ -1,7 +1,7 @@
 import { QueryInterface, DataTypes } from 'sequelize';
 
 const migration = {
-  up: (queryInterface: QueryInterface) => queryInterface.sequelize.transaction((t) => queryInterface.createTable('categories', {
+  up: (queryInterface: QueryInterface) => queryInterface.sequelize.transaction((transaction) => queryInterface.createTable('categories', {
     id: {
       type: DataTypes.UUID,
       primaryKey: true,
@@ -17,7 +17,7 @@ const migration = {
       type: DataTypes.DATE,
     },
   }, {
-    transaction: t,
+    transaction,
   })),
 };
 

src/migrations/20200605151452_create_cat.migration.ts

@@ -1,7 +1,7 @@
 import { QueryInterface, DataTypes } from 'sequelize';
 
 const migration = {
-  up: (queryInterface: QueryInterface) => queryInterface.sequelize.transaction((t) => queryInterface.createTable('cats', {
+  up: (queryInterface: QueryInterface) => queryInterface.sequelize.transaction((transaction) => queryInterface.createTable('cats', {
     id: {
       type: DataTypes.UUID,
       primaryKey: true,
@@ -28,7 +28,7 @@ const migration = {
       type: DataTypes.DATE,
     },
   }, {
-    transaction: t,
+    transaction,
   })),
 };
 

src/models/cat.model.ts

@@ -1,6 +1,6 @@
 import { Model, DataTypes } from 'sequelize';
 
-import sequelize from '.';
+import { sequelize } from './sequelize';
 import Category from './category.model';
 
 class Cat extends Model {

src/models/category.model.ts

@@ -1,6 +1,6 @@
 import { Model, DataTypes } from 'sequelize';
 
-import sequelize from '.';
+import { sequelize } from './sequelize';
 import Cat from './cat.model';
 
 class Category extends Model {

src/models/index.ts → src/models/sequelize.ts

@@ -1,5 +1,7 @@
 import { Sequelize } from 'sequelize';
 import { logger } from 'juno-js';
+import path from 'path';
+import fs from 'fs';
 
 import { config } from '../components';
 
@@ -23,4 +25,20 @@ sequelize
     logger.error('Sequelize authentication failed: ', e);
   });
 
-export default sequelize;
+const associate = () => {
+  const models: { [key: string]: any } = {};
+  fs
+    .readdirSync(__dirname)
+    .filter((fileName: string) => /model.[t|j]s/.test(fileName))
+    .forEach((fileName) => {
+      const model = require(path.resolve(__dirname, fileName));
+      models[model.default.name] = model.default;
+    });
+  Object.keys(models).forEach((modelName: string) => {
+    if ('associate' in models[modelName]) {
+      models[modelName].associate(models);
+    }
+  });
+};
+
+export { sequelize, associate };

src/services/cat.service.ts

@@ -1,4 +1,4 @@
-import sequelize from '../models';
+import { sequelize } from '../models/sequelize';
 import CatModel from '../models/cat.model';
 import Category from '../models/category.model';
 import { MutationCreateCatArgs, Cat } from '../types/graphql.type';

src/services/category.service.ts

@@ -1,4 +1,4 @@
-import sequelize from '../models';
+import { sequelize } from '../models/sequelize';
 import Cat from '../models/cat.model';
 import CategoryModel from '../models/category.model';
 import { MutationCreateCategoryArgs, Category } from '../types/graphql.type';