Add article and association with user

models/article.js

@@ -0,0 +1,33 @@
+'use strict';
+const {
+  Model
+} = require('sequelize');
+
+module.exports = (sequelize, DataTypes) => {
+  class article extends Model {
+    static associate(models) {
+      Article.belongsTo(models.User, {
+        foreignKey: 'submitted_by',
+        onDelete: 'SET NULL',
+        onUpdate: 'CASCADE',
+        as: 'submitter',
+      })
+      Article.belongsTo(models.User, {
+        as: 'reviewer',
+        foreignKey: 'reviewed_by',
+        onDelete: 'SET NULL',
+        onUpdate: 'CASCADE',
+      })
+    }
+  }
+  article.init({
+    title: DataTypes.STRING,
+    content: DataTypes.STRING,
+    submittedBy: DataTypes.STRING,
+    reviewedBy: DataTypes.STRING
+  }, {
+    sequelize,
+    modelName: 'article',
+  });
+  return article;
+};

models/user.js

@@ -4,13 +4,18 @@ const {
 } = require('sequelize');
 module.exports = (sequelize, DataTypes) => {
   class user extends Model {
-    /**
-     * Helper method for defining associations.
-     * This method is not a part of Sequelize lifecycle.
-     * The `models/index` file will call this method automatically.
-     */
     static associate(models) {
-      // define association here
+      User.hasMany(models.Article, {
+        foreignKey: 'submitted_by',
+        onDelete: 'SET NULL',
+        onUpdate: 'CASCADE',
+      })
+      User.hasMany(models.Article, {
+        foreignKey: 'reviewed_by',
+        as: 'reviewedArticles',
+        onDelete: 'SET NULL',
+        onUpdate: 'CASCADE',
+      })
     }
   }
   user.init({
@@ -20,4 +25,4 @@ module.exports = (sequelize, DataTypes) => {
     modelName: 'user',
   });
   return user;
-};
+};