Question

我是Drupal 8的新人。我创建了一个category (taxonomy)的节点。现在，我不了解如何使用tid获取nid。我使用$node->body->value获取正文字段值并使用{{ body }}。但是如果我使用$node->field_category->value来获取类别ID，它将在调试模式下显示Null。

function THEME_preprocess_node(&$variables) {
  $node = \Drupal::routeMatch()->getParameter('node');
  $variables['body'] = $node->body->value;    // Working fine
  $cat_id = $node->field_category->value;    // Its showing null
  kint($cat_id);
}

所以有人可以告诉我如何获得节点的category id (tid)？

Answer 1

可以使用target_id而不是value来获取引用字段的值。使用target_id，您可以根据需要加载完整的术语。

from StringIO import StringIO
s="""
1,98.4,100M,55M,65M,75M,100M,75M,65M,100M,98M,100M,100M,92M,0#,0N#,
1,98.4,100M,55M,65M,75M,100M,75M,65M,100M,98M,100M,100M,92M,0#,0N#,
2,98.4,100M,55M,65M,75M,100M,75M,65M,100M,98M,100M,100M,92M,0#,0N#,
2,98.4,100M,55M,65M,75M,100M,75M,65M,100M,98M,100M,100M,92M,0#,0N#,
"""
yourfile = StringIO(s)

如何在Drupal 8中代表节点id（nid）获取tid？

1 个答案: