Fixes a bug

Author: malhayek2014

src/HtmlGenerators/.php_cs.cache

@@ -1 +1 @@
-{"php":"5.6.24","version":"2.1.2:","rules":{"encoding":true,"full_opening_tag":true,"blank_line_after_namespace":true,"braces":true,"class_definition":true,"elseif":true,"function_declaration":true,"indentation_type":true,"line_ending":true,"lowercase_constants":true,"lowercase_keywords":true,"method_argument_space":true,"no_closing_tag":true,"no_spaces_after_function_name":true,"no_spaces_inside_parenthesis":true,"no_trailing_whitespace":true,"no_trailing_whitespace_in_comment":true,"single_blank_line_at_eof":true,"single_class_element_per_statement":["property"],"single_import_per_statement":true,"single_line_after_imports":true,"switch_case_semicolon_to_colon":true,"switch_case_space":true,"visibility_required":true},"hashes":{"GenerateFormViews.php":945491809,"HtmlGeneratorBase.php":260638370,"LaravelCollectiveHtml.php":382217718,"StandardHtml.php":967239408}}
+{"php":"5.6.24","version":"2.1.2:","rules":{"encoding":true,"full_opening_tag":true,"blank_line_after_namespace":true,"braces":true,"class_definition":true,"elseif":true,"function_declaration":true,"indentation_type":true,"line_ending":true,"lowercase_constants":true,"lowercase_keywords":true,"method_argument_space":true,"no_closing_tag":true,"no_spaces_after_function_name":true,"no_spaces_inside_parenthesis":true,"no_trailing_whitespace":true,"no_trailing_whitespace_in_comment":true,"single_blank_line_at_eof":true,"single_class_element_per_statement":["property"],"single_import_per_statement":true,"single_line_after_imports":true,"switch_case_semicolon_to_colon":true,"switch_case_space":true,"visibility_required":true},"hashes":{"GenerateFormViews.php":945491809,"HtmlGeneratorBase.php":1054343904,"LaravelCollectiveHtml.php":382217718,"StandardHtml.php":967239408}}

src/HtmlGenerators/HtmlGeneratorBase.php

@@ -326,7 +326,7 @@ protected function getPickItemsHtml(Field $field, ValidationParser $parser)
             }
         }
 
-        $this->wrapField($fields, $field, true, (($field->htmlType == 'checkbox') && !$field->isBoolean) ? 'required' : '');
+        $this->wrapField($fields, $field, true, (($field->htmlType == 'checkbox') && !$field->isBoolean()) ? 'required' : '');
 
         return $fields;
     }