add group membership table

migrations/20160208165226-groupMembers-add-table.js

@@ -0,0 +1,22 @@
+var dbm = global.dbm || require('db-migrate');
+var type = dbm.dataType;
+
+exports.up = function(db, callback) {
+	var cmd = "CREATE TABLE IF NOT EXISTS groupMembers(" +
+    			"groupId VARCHAR(128) NOT NULL," +
+    			"userId VARCHAR(128) NOT NULL," +
+    			"FOREIGN KEY(groupId) REFERENCES groups(id)," +
+    			"FOREIGN KEY(userId) REFERENCES users(id));";
+
+    db.runSql(cmd, function (error) {
+        if (error) console.error(error);
+        callback(error);
+    });
+};
+
+exports.down = function(db, callback) {
+    db.runSql('DROP TABLE groupMembers', function (error) {
+        if (error) console.error(error);
+        callback(error);
+    });
+};

migrations/schema.sql

@@ -26,6 +26,12 @@ CREATE TABLE IF NOT EXISTS groups(
     username VARCHAR(254) NOT NULL UNIQUE,
     PRIMARY KEY(id));
 
+CREATE TABLE IF NOT EXISTS groupMembers(
+    groupId VARCHAR(128) NOT NULL,
+    userId VARCHAR(128) NOT NULL,
+    FOREIGN KEY(groupId) REFERENCES groups(id),
+    FOREIGN KEY(userId) REFERENCES users(id));
+
 CREATE TABLE IF NOT EXISTS tokens(
     accessToken VARCHAR(128) NOT NULL UNIQUE,
     identifier VARCHAR(128) NOT NULL,