New class for handling field definitions.

lib/Frs/FieldDefinition.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Frs;
+
+class FieldDefinition
+{
+    private $field_data = array();
+
+    /**
+     * @param string $type Type of FieldDefinition (hotel, car, etc.)
+     * @throws \Exception if no definition file for this $type is found
+     */
+    public function __construct($type)
+    {
+        $definition_file = 'definitions/' . $type . '.json';
+        if (!file_exists($definition_file)) {
+            throw new \Exception('File ' . $definition_file . ' not found!');
+        }
+        $field_data_json  = file_get_contents($definition_file);
+        $this->field_data = json_decode($field_data_json, true);
+    }
+
+    public function getFieldData()
+    {
+        return $this->field_data;
+    }
+
+    public function getGroups()
+    {
+        $by_group = array();
+        foreach ($this->field_data['groups'] as $id=>$group) {
+            $by_group[$group] = array(
+                'group_name' => $group,
+                'fields'     => array(),
+            );
+        }
+        return $by_group;
+    }
+}