Drupal 7 的 node 結構

7.x - Node object core structure (不含 fields)

$node->nid	Node ID.
$node->vid	The revision ID of the current version of this node.
$node->type	Type of node (e.g. book, page, forum), which is also the entity bundle.
$node->language	The default language for this node.
$node->title	Page (or, more accurately, node) title.
$node->uid	User ID of node creator.
$node->status	unpublished/published (NODE_NOT_PUBLISHED | NODE_PUBLISHED).
$node->created	UNIX timestamp of node creation date.
$node->changed	UNIX timestamp of last time node was changed.
$node->comment	Whether comments are allowed on this node (COMMENT_NODE_HIDDEN | COMMENT_NODE_CLOSED | COMMENT_NODE_OPEN)
$node->promote	Promoted to front page (NODE_NOT_PROMOTED | NODE_PROMOTED).
$node->sticky	Sticky (NODE_NOT_STICKY | NODE_STICKY).
$node->tnid	The node ID of the translation source (or parent, if node is a translation).
$node->translate	Does the translation need to be updated (0|1)?
$node->revision_uid	The user ID of the user who created the current revision.
$node->body	Array. Body content of node. Long text field with summary. Note: Don't assume that this field will exist, as it is possible to remove it via Manage Fields on each content type. Similarly, modules that define a custom node content type may not even attach a body in the first place.
$node->log	Message left by the creator of this revision, explaining the changes.
$node->revision_timestamp	Unix timestamp showing when current revision was created.
$node->name	Username of node creator.
$node->picture	User avatar of the node creator.
$node->cid	CID of last comment?
$node->last_comment_timestamp	Timestamp of last comment (Unix Epoch C).
$node->last_comment_name	Name of last comment author
$node->last_comment_uid	UID of last comment author.
$node->comment_count	Number of comments made on node.
$node->data	Serialized string of data associated with the node.
$node->rdf_mapping	W3C standard to describe structured data. Seehttp://api.drupal.org/api/drupal/modules!rdf!rdf.module/group/rdf/7

透過 Field API 所加入的欄位結構

例如加入名為 foo 的文字欄位，要取出其值可用：

$val = $node->field_foo[LANGUAGE_NONE][0]['value'];


如果覺得這樣不方便，可用 meta wrapper 來包：

$wrapper = entity_metadata_wrapper('node', $node);
$val = $wrapper->field_foo->value();


要用哪一種?  其實都可以，如果只是要讀取某欄的值，先用

drupal_set_message('debug: ' . print_r($node->field_foo, TRUE));


確認該欄的結構後，直接取值就好。

若有多個值要存取，改用 wrapper 才會較有感。