Fix purge

Author: drew-gross

src/Adapters/Storage/Mongo/MongoStorageAdapter.js

@@ -201,7 +201,7 @@ export class MongoStorageAdapter {
   // undefined as the reason.
   getClass(className) {
     return this._schemaCollection()
-    .then(schemasCollection => schemasCollection._fechOneSchemaFrom_SCHEMA(className));
+    .then(schemasCollection => schemasCollection._fechOneSchemaFrom_SCHEMA(className))
   }
 
   // TODO: As yet not particularly well specified. Creates an object. Maybe shouldn't even need the schema,

src/Controllers/DatabaseController.js

@@ -100,12 +100,8 @@ DatabaseController.prototype.collectionExists = function(className) {
 
 DatabaseController.prototype.purgeCollection = function(className) {
   return this.loadSchema()
-  .then((schema) => {
-    schema.getOneSchema(className)
-  })
-  .then((schema) => {
-    this.adapter.deleteObjectsByQuery(className, {}, schema);
-  });
+  .then(schemaController => schemaController.getOneSchema(className))
+  .then(schema => this.adapter.deleteObjectsByQuery(className, schema, {}));
 };
 
 DatabaseController.prototype.validateClassName = function(className) {