Open hook workflow to custom methods (#72)

* open hooks workflow to custom methods

* simplify converters

* add makeConverter method

* use Object.assign for node 6

* use hook.arguments

* remove arguments converting from hook data

* remove useless export

* remove makeConverter function

* simplify condition

* remove converters from createHookObject

* validateArguments for all methods

packages/commons/.gitignore

@@ -28,3 +28,6 @@ node_modules
 
 # Users Environment Variables
 .lock-wscript
+
+# IDEs
+.idea

packages/commons/lib/arguments.js

@@ -1,56 +1,41 @@
-const paramCounts = {
-  find: 1,
-  get: 2,
-  create: 2,
-  update: 3,
-  patch: 3,
-  remove: 2
-};
-
 function isObjectOrArray (value) {
   return typeof value === 'object' && value !== null;
 }
 
-exports.validateArguments = function validateArguments (method, args) {
+exports.validateArguments = function validateArguments (argsOrders, method, args) {
   // Check if the last argument is a callback which are no longer supported
   if (typeof args[args.length - 1] === 'function') {
     throw new Error('Callbacks are no longer supported. Use Promises or async/await instead.');
   }
 
-  const methodParamCount = paramCounts[method];
+  const methodArgs = argsOrders[method] || ['params'];
+  const methodParamCount = methodArgs.length;
 
   // Check the number of arguments and throw an error if too many are provided
   if (methodParamCount && args.length > methodParamCount) {
     throw new Error(`Too many arguments for '${method}' method`);
   }
 
-  // `params` is always the last argument
-  const params = args[methodParamCount - 1];
-
-  // Check if `params` is an object (can be undefined though)
-  if (params !== undefined && !isObjectOrArray(params)) {
-    throw new Error(`Params for '${method}' method must be an object`);
-  }
-
   // Validate other arguments for each method
-  switch (method) {
-    case 'create':
-      if (!isObjectOrArray(args[0])) {
-        throw new Error(`A data object must be provided to the 'create' method`);
-      }
-      break;
-    case 'get':
-    case 'remove':
-    case 'update':
-    case 'patch':
-      if (args[0] === undefined) {
-        throw new Error(`An id must be provided to the '${method}' method`);
-      }
-
-      if ((method === 'update' || method === 'patch') && !isObjectOrArray(args[1])) {
-        throw new Error(`A data object must be provided to the '${method}' method`);
-      }
-  }
-
-  return true;
+  return methodArgs.every((argName, index) => {
+    switch (argName) {
+      case 'id':
+        if (args[index] === undefined) {
+          throw new Error(`An id must be provided to the '${method}' method`);
+        }
+        break;
+      case 'data':
+        if (!isObjectOrArray(args[index])) {
+          throw new Error(`A data object must be provided to the '${method}' method`);
+        }
+        break;
+      case 'params':
+        if (args[index] !== undefined && !isObjectOrArray(args[index])) {
+          throw new Error(`Params for '${method}' method must be an object`);
+        }
+        break;
+    }
+
+    return true;
+  });
 };

packages/commons/lib/hooks.js

@@ -5,31 +5,8 @@ const SKIP = exports.SKIP = typeof Symbol !== 'undefined'
   ? Symbol('__feathersSkipHooks')
   : '__feathersSkipHooks';
 
-const convertGetOrRemove = ([ id, params = {} ]) => ({ id, params });
-const convertUpdateOrPatch = ([ id, data, params = {} ]) => ({ id, data, params });
-
-// Converters from service method arguments to hook object properties
-exports.converters = {
-  find (args) {
-    const [ params = {} ] = args;
-
-    return { params };
-  },
-  create (args) {
-    const [ data, params = {} ] = args;
-
-    return { data, params };
-  },
-  get: convertGetOrRemove,
-  remove: convertGetOrRemove,
-  update: convertUpdateOrPatch,
-  patch: convertUpdateOrPatch
-};
-
-// Create a hook object for a method with arguments `args`
-// `data` is additional data that will be added
-exports.createHookObject = function createHookObject (method, args, data = {}) {
-  const hook = exports.converters[method](args);
+exports.createHookObject = function createHookObject (method, data = {}) {
+  const hook = {};
 
   Object.defineProperty(hook, 'toJSON', {
     value () {