Adds _getRawAttributes()

lib/schema-manager.js

@@ -1,8 +1,14 @@
 /* eslint-disable class-methods-use-this */
+/* eslint-disable no-underscore-dangle */
 
 const merge = require('lodash.merge');
 const StrategyInterface = require('./strategy-interface');
 
+/**
+ * Private methods.
+ */
+const _getRawAttributes = Symbol('Private method');
+
 /**
  * Private properties.
  *
@@ -54,8 +60,11 @@ class SchemaManager {
     if (!(strategy instanceof StrategyInterface))
       throw new TypeError("Strategy must implement the 'StrategyInterface'");
 
+    // extract sequelize properties
+    const rawAttributes = this[_getRawAttributes](model);
+
     // all good, import model, generate schema
-    return '{ dummy: "json schema" }';
+    return rawAttributes;
   }
 
   /**
@@ -66,6 +75,21 @@ class SchemaManager {
   getOptions() {
     return privateProperties.get(this).options; // WeakMap
   }
+
+  /**
+   * Return the raw properties from a (v4 or v5+) Sequelize model.
+   *
+   * @private
+   * @param  {Sequelize.Model} model Instance of Sequelize.Model
+   * @returns {object} Raw Sequelize attributes.
+   */
+  [_getRawAttributes](model) {
+    if ('rawAttributes' in model) {
+      return model.rawAttributes; // v5+
+    }
+
+    return model.attributes; // v4
+  }
 }
 
 module.exports = SchemaManager;