showAllTables for QueryInterface

lib/query-interface.js

@@ -10,6 +10,21 @@ module.exports = (function() {
     return query.call(this, this.QueryGenerator.createTableQuery(tableName, attributes, options))
   }
 
+  QueryInterface.prototype.showAllTables = function() {
+    var self = this
+
+    return new Utils.CustomEventEmitter(function(emitter) {
+      self.sequelize.query('SHOW TABLES;', null, { raw: true }).success(function(data) {
+        var tableNames = Sequelize.Utils._.map(data, function(hash) {
+          return Sequelize.Utils._.values(hash)
+        })
+        emitter.emit('success', Sequelize.Utils._.flatten(tableNames))
+      }).error(function(err) {
+        emitter.emit('failure', err)
+      })
+    }).run()
+  }
+
   QueryInterface.prototype.dropTable = function(tableName) {
     return query.call(this, this.QueryGenerator.dropTableQuery(tableName))
   }
@@ -20,11 +35,8 @@ module.exports = (function() {
     return new Utils.CustomEventEmitter(function(emitter) {
       var chainer = new Utils.QueryChainer()
 
-      self.sequelize.query('SHOW TABLES;', null, { raw: true }).success(function(data) {
-        var tableNames = Sequelize.Utils._.map(data, function(hash) {
-          return Sequelize.Utils._.values(hash)
-        })
-        Sequelize.Utils._.flatten(tableNames).forEach(function(tableName) {
+      self.showAllTables().success(function(tableNames) {
+        tableNames.forEach(function(tableName) {
           chainer.add(self.sequelize.getQueryInterface().dropTable(tableName))
         })
         chainer