undefined method stdClass::

[fanatos]

class Photo{

	......

	public function delete() {
	global $mysqli;
	  $sql = "DELETE FROM " .static::$table_name;
	  $sql .= " WHERE album_id =". $mysqli->real_escape_string($this->album_id);
	  $sql .= " LIMIT 1";
	  $mysqli->query($sql);
	  return ($mysqli->affected_rows == 1) ? true : false;
}


}

 

 

 

$album->delete()

 

 

REZUKLTAATS: Fatal error: Call to undefined method stdClass::delete()

 

Varbuut kaads var pateikt, kas sheit ir par vainu?

[bubu]

Kas ir $album?

[fanatos]

Kas ir $album?

 

// atgiezz Album objektu
$album = Album::find_by_id(1);
// atribuuts straadaa
echo $album->title;
// metode nee
$album->delete();

[fanatos]

labi, es laikam zinu kur ir probleema

[PHsG]

$album = new Photo();

[bubu]

labi, es laikam zinu kur ir probleema

Tad pastāsti arī citiem.

[fanatos]

metode, kas saveido abjektus bija noimplementaata nepareizi.

 

tas kas izsauca:

 

public static function find_by_id($id=0) {
	global $mysqli;
	$object_array = static::find_by_sql("SELECT * FROM ".static::$table_name." WHERE album_id=".$mysqli->real_escape_string($id)." LIMIT 1");
	return !empty($object_array) ? array_shift($object_array) : false;
}

 

 

pirms:

 

public static function find_by_sql($sql="") {
   global $mysqli;
   $object_array = array();
	  $result = $mysqli->query($sql);
	  $mysqli->confirm_query($result);
	  while ($obj = $result->fetch_object()) {
		  $object_array[] = $obj;
	  }
	  $result->close();
	  return $object_array;
}

 

 

 

peec:

 

public static function find_by_sql($sql="") {
	global $mysqli;
	$members = array();
	// get class name at runtime
	$class_name = get_called_class();
	$class_attributes = static::attributes();

	$result = $mysqli->query($sql);
	$mysqli->confirm_query($result);

	while ($obj = $result->fetch_object()) {
		// set new instances
		$member = new $class_name;		  
		foreach (array_keys($class_attributes) as $key) {
			$member->$key = $obj->$key;
		}
		$members[] = $member;  
	}

	$result->close();
	return $members;
}

 

 

bet tagad esmu nonaacis pie citas probleemas:

 

cik es tagad palasiiju, tad statiskaas metodes nevar izmatot vaardu $this liidz ar to es netieku klaat dazziem klases atribuutiem.. ir kaads variants, kaa es vinnis vareetu tomeer ielasiit?

 

protected static function attributes() { 

  $attributes = array();
  foreach( static::table_fields() as $field ) {
	  $class_name = get_called_class();			 
	if(property_exists($class_name, $field)) {  
	  $attributes[$field] = $field; [b]//$this->$field[/b]
	}
  }
  return $attributes;
}

[bubu]

Jā, ir. Nelietot static.

Static jau lieto tieši tāpēc, lai nebūtu $this - t.i. funkcija izpildītos globālā, ne objekta kontekstā. Vienīgais, kas kopējs static un ne-static funkcijām, ir tās neimspeiss - klases vārds.