added global drop method

lib/sequelize/sequelize.js

@@ -17,7 +17,7 @@ var Sequelize = module.exports = function(database, username, password, options)
     host    : options.host || 'localhost',
     port    : options.port || 3306
   }
-  
+
   this.modelManager = new ModelManager(this)
   this.connectorManager = new ConnectorManager(this.config)
 }
@@ -26,19 +26,19 @@ Sequelize.Utils = Utils
 var instanceMethods = {
   define: function(modelName, attributes, options) {
     options = options || {}
-    
+
     if(this.options.defineOptions) options = Sequelize.Utils.merge(options, this.options.defineOptions)
 
     var model = this.modelManager.addModel(new ModelDefinition(modelName, attributes, options))
-    
+
     return model
   },
-  
+
   import: function(path) {
     var defineCall = require(path)
     return defineCall(this, DataTypes)
   },
-  
+
   query: function(sql, callee, options) {
     options = options || {}
 
@@ -48,27 +48,41 @@ var instanceMethods = {
 
     return this.connectorManager.query(sql, callee, options)
   },
-  
+
   sync: function(options) {
     options = options || {}
-    
+
     if(this.options.syncOptions) options = Sequelize.Utils.merge(options, this.options.syncOptions)
-    
+
     var self = this
     var eventEmitter = new Utils.CustomEventEmitter(function() {
       var chainer = new Utils.QueryChainer
-      
+
       self.modelManager.models.forEach(function(model) { chainer.add(model.sync(options)) })
-      
+
       chainer
         .run()
         .on('success', function() { eventEmitter.emit('success', null) })
         .on('failure', function(err) { eventEmitter.emit('failure', err) })
     })
     return eventEmitter.run()
+  },
+
+  drop: function() {
+    var self = this
+
+    return new Utils.CustomEventEmitter(function(emitter) {
+      var chainer = new Utils.QueryChainer
+
+      self.modelManager.models.forEach(function(model) { chainer.add(model.drop()) })
+
+      chainer
+        .run()
+        .on('success', function() { emitter.emit('success', null) })
+        .on('failure', function(err) { emitter.emit('failure', err) })
+    }).run()
   }
 }
 
-
 Sequelize.Utils._.map(DataTypes, function(sql, accessor) { Sequelize[accessor] = sql})
 Sequelize.Utils._.map(instanceMethods, function(fct, name) { Sequelize.prototype[name] = fct})