Adding migration support and delete cascade migration for space references

models/db.js

 //'use strict';
 
+var Umzug = require('umzug');
 //var mongoose = require('mongoose');
 //const sqlite3 = require('sqlite3').verbose();
 
@@ -199,7 +200,7 @@ module.exports = {
     updated_at: {type: Sequelize.DATE, defaultValue: Sequelize.NOW}
   }),
 
-  init: function() {
+  init: async function() {
     User = this.User;
     Session = this.Session;
     Space = this.Space;
@@ -256,7 +257,27 @@ module.exports = {
       as: 'space'
     });
 
-    sequelize.sync();
+    await sequelize.sync();
+
+    var umzug = new Umzug({
+        storage: 'sequelize',
+        storageOptions: {
+            sequelize: sequelize
+        },
+        migrations: {
+            params: [
+                sequelize.getQueryInterface(),
+                Sequelize
+            ],
+            path: './models/migrations',
+            pattern: /\.js$/
+        }
+    });
+
+    umzug.up().then(function(migrations)  {
+      console.log('Migration complete up!');
+    });
+
   },
 
   getUserRoleInSpace: (originalSpace, user, cb) => {

models/migrations/01-spaces-delete-cascade.js

+'use strict';
+
+module.exports = {
+  up: function(migration, DataTypes) {
+    return [
+      migration.changeColumn('memberships', 'space_id',
+        {
+          type: DataTypes.STRING,
+          references: {
+            model: 'spaces',
+            key: '_id'
+          },
+          onDelete: 'CASCADE',
+          onUpdate: 'CASCADE'
+        }
+      ),
+      migration.changeColumn('artifacts', 'space_id',
+        {
+          type: DataTypes.STRING,
+          references: {
+            model: 'spaces',
+            key: '_id'
+          },
+          onDelete: 'CASCADE',
+          onUpdate: 'CASCADE'
+        }
+      ),
+      migration.changeColumn('messages', 'space_id',
+        {
+          type: DataTypes.STRING,
+          references: {
+            model: 'spaces',
+            key: '_id'
+          },
+          onDelete: 'CASCADE',
+          onUpdate: 'CASCADE'
+        }
+      )
+    ]
+  },
+
+  down: function(migration, DataTypes) {
+    return [
+      migration.changeColumn('memberships', 'space_id',
+        {
+          type: DataTypes.STRING,
+          references: {
+            model: 'spaces',
+            key: '_id'
+          },
+          onDelete: 'CASCADE',
+          onUpdate: 'NO ACTION'
+        }
+      ),
+      ,
+      migration.changeColumn('artifacts', 'space_id',
+        {
+          type: DataTypes.STRING,
+          references: {
+            model: 'spaces',
+            key: '_id'
+          },
+          onDelete: 'CASCADE',
+          onUpdate: 'NO ACTION'
+        }
+      ),
+      migration.changeColumn('messages', 'space_id',
+        {
+          type: DataTypes.STRING,
+          references: {
+            model: 'spaces',
+            key: '_id'
+          },
+          onDelete: 'CASCADE',
+          onUpdate: 'NO ACTION'
+        }
+      )
+    ]
+  }
+};

package.json

@@ -40,6 +40,7 @@
     "slug": "0.9.1",
     "sqlite3": "^4.0.0",
     "swig": "1.4.2",
+    "umzug": "^2.1.0",
     "underscore": "1.8.3",
     "uuid": "^3.2.1",
     "validator": "7.0.0",