Fix more same error

Author: jannyHou

relation/index.js

@@ -126,7 +126,9 @@ module.exports = yeoman.generators.Base.extend({
       {
         name: 'foreignKey',
         message: 'Optionally enter a custom foreign key:',
-        validate: validateOptionalName
+         validate: function(value){
+          return validateOptionalName(value);
+        }
       },
       {
         name: 'through',

remote-method/index.js

@@ -191,7 +191,9 @@ module.exports = yeoman.generators.Base.extend({
         name: 'acceptsArg',
         message: 'Enter name for accept argument:',
         required: true,
-        validate: validateOptionalName
+        validate: function(value){
+          return validateOptionalName(value);
+        }
       }
     ];
     this.prompt(prompts, function(answers) {
@@ -281,7 +283,9 @@ module.exports = yeoman.generators.Base.extend({
         name: 'returnsArg',
         message: 'Enter name for return argument:',
         required: true,
-        validate: validateOptionalName
+        validate: function(value){
+          return validateOptionalName(value);
+        }
       }
     ];
     this.prompt(prompts, function(answers) {