1 <?php
  2 /**
  3  * @package sapphire
  4  * @subpackage formatters
  5  */
  6 class JSONDataFormatter extends DataFormatter {
  7     /**
  8      * @todo pass this from the API to the data formatter somehow
  9      */
 10     static $api_base = "api/v1/";
 11     
 12     protected $outputContentType = 'application/json';
 13     
 14     public function supportedExtensions() {
 15         return array(
 16             'json', 
 17             'js'
 18         );
 19     }
 20 
 21     public function supportedMimeTypes() {
 22         return array(
 23             'application/json', 
 24             'text/x-json'
 25         );
 26     }
 27     
 28     /**
 29      * Generate an XML representation of the given {@link DataObject}.
 30      * 
 31      * @param DataObject $obj
 32      * @param $includeHeader Include <?xml ...?> header (Default: true)
 33      * @return String XML
 34      */
 35     public function convertDataObject(DataObjectInterface $obj, $fields = null, $relations = null) {
 36         $className = $obj->class;
 37         $id = $obj->ID;
 38         
 39         $json = "{\n  \"className\" : \"$className\",\n";
 40         foreach($this->getFieldsForObj($obj) as $fieldName => $fieldType) {
 41             // Field filtering
 42             if($fields && !in_array($fieldName, $fields)) continue;
 43 
 44             $fieldValue = $obj->$fieldName;
 45             if(is_object($fieldValue) && is_subclass_of($fieldValue, 'Object') && $fieldValue->hasMethod('toJSON')) {
 46                 $jsonParts[] = "\"$fieldName\" : " . $fieldValue->toJSON();
 47             } else {
 48                 $jsonParts[] = "\"$fieldName\" : " . Convert::raw2json($fieldValue);
 49             }
 50         }
 51 
 52         if($this->relationDepth > 0) {
 53             foreach($obj->has_one() as $relName => $relClass) {
 54                 if(!singleton($relClass)->stat('api_access')) continue;
 55                 
 56                 // Field filtering
 57                 if($fields && !in_array($relName, $fields)) continue;
 58                 if($this->customRelations && !in_array($relName, $this->customRelations)) continue;
 59 
 60                 $fieldName = $relName . 'ID';
 61                 if($obj->$fieldName) {
 62                     $href = Director::absoluteURL(self::$api_base . "$relClass/" . $obj->$fieldName);
 63                 } else {
 64                     $href = Director::absoluteURL(self::$api_base . "$className/$id/$relName");
 65                 }
 66                 $jsonParts[] = "$relName : { \"className\" : \"$relClass\", \"href\" : \"$href.json\", \"id\" : \"{$obj->$fieldName}\" }";
 67             }
 68     
 69             foreach($obj->has_many() as $relName => $relClass) {
 70                 if(!singleton($relClass)->stat('api_access')) continue;
 71                 
 72                 // Field filtering
 73                 if($fields && !in_array($relName, $fields)) continue;
 74                 if($this->customRelations && !in_array($relName, $this->customRelations)) continue;
 75 
 76                 $jsonInnerParts = array();
 77                 $items = $obj->$relName();
 78                 foreach($items as $item) {
 79                     //$href = Director::absoluteURL(self::$api_base . "$className/$id/$relName/$item->ID");
 80                     $href = Director::absoluteURL(self::$api_base . "$relClass/$item->ID");
 81                     $jsonInnerParts[] = "{ \"className\" : \"$relClass\", \"href\" : \"$href.json\", \"id\" : \"{$obj->$fieldName}\" }";
 82                 }
 83                 $jsonParts[] = "$relName : [\n    " . implode(",\n    ", $jsonInnerParts) . "  \n  ]";
 84             }
 85     
 86             foreach($obj->many_many() as $relName => $relClass) {
 87                 if(!singleton($relClass)->stat('api_access')) continue;
 88                 
 89                 // Field filtering
 90                 if($fields && !in_array($relName, $fields)) continue;
 91                 if($this->customRelations && !in_array($relName, $this->customRelations)) continue;
 92 
 93                 $jsonInnerParts = array();
 94                 $items = $obj->$relName();
 95                 foreach($items as $item) {
 96                     //$href = Director::absoluteURL(self::$api_base . "$className/$id/$relName/$item->ID");
 97                     $href = Director::absoluteURL(self::$api_base . "$relClass/$item->ID");
 98                     $jsonInnerParts[] = "    { \"className\" : \"$relClass\", \"href\" : \"$href.json\", \"id\" : \"{$obj->$fieldName}\" }";
 99                 }
100                 $jsonParts[] = "$relName : [\n    " . implode(",\n    ", $jsonInnerParts) . "\n  ]";
101             }
102         }
103         
104         return "{\n  " . implode(",\n  ", $jsonParts) . "\n}";  }
105 
106     /**
107      * Generate an XML representation of the given {@link DataObjectSet}.
108      * 
109      * @param DataObjectSet $set
110      * @return String XML
111      */
112     public function convertDataObjectSet(DataObjectSet $set, $fields = null) {
113         $jsonParts = array();
114         foreach($set as $item) {
115             if($item->canView()) $jsonParts[] = $this->convertDataObject($item, $fields);
116         }
117         $json = "{\n";
118         $json .= '"totalSize": ';
119         $json .= (is_numeric($this->totalSize)) ? $this->totalSize : 'null';
120         $json .= ",\n";
121         $json .= "\"items\": [\n" . implode(",\n", $jsonParts) . "\n]\n";
122         $json .= "}\n";
123 
124         return $json;
125     }
126     
127     public function convertStringToArray($strData) {
128         return Convert::json2array($strData);
129     }
130     
131 }