Xml 在Drupal8中从术语实体引用获取字段时，尝试获取非对象的属性

我正在创建一个内容类型传记的XML提要，其中包含实体引用术语字段。我正在加载节点，加载段落字段，然后使用Term:：load加载段落字段中的Term对象，该字段是一个逐项ID号。然而，当我试图从术语本身获取字段时，如果不在我使用->名称->值的行中抛出“尝试获取非对象的属性”，我就无法做到这一点。字段成功地被抓取和渲染，错误也随之出现。尝试使用->getName（）方法会完全中断提要

private function xmlOutput($input) {
  $node = Node::load($input);
  $educationArray = $node->get('field_group_education');
  $educationOutput = [];
  foreach ($educationArray as $key => $value) {
    $educationGroupID = $node->get('field_group_education')[$key]->target_id;
    $educationGroup = Paragraph::load($educationGroupID);
    $honors = $educationGroup->get('field_academic_honors')->value;
    $degreeID = $educationGroup->get('field_degrees')->target_id;
    $degree = Term::load($degreeID)->name->value;
    $educationID = $educationGroup->get('field_education')->target_id;
    $schoolName = Term::load($educationID)->name->value;
    $yearGraduated = $educationGroup->get('field_year_graduated')->value;
    $educationRender = '<professionalEducation>
                        <order>' . $key  . '</order>
                        <school whereField="Name" whereValue="' . $schoolName . '" autoCreate="true"/>
                        <educationType whereField="Name" whereValue="' . $degree . '" autoCreate="true"/>
                        <yearGraduated>' . $yearGraduated . '</yearGraduated>
                        <degree whereField="Name" whereValue="' . $degree . '" autoCreate="true"/> . 
                        <honors>' . $honors . '</honors>
                        </professionalEducation>';
    array_push($educationOutput, $educationRender);
  }
  $compiled = [
    '<education>',
    implode($educationOutput),
    '</education>',
  ];
  return implode('', $compiled);

工作正常，但错误依然存在

$degree = '';
if(isset(Term::load($degreeID)->getName())) {
  $degree = $degreeObject->getName();
}

---

抛出500个错误，但也会清除错误

检查目标id

isset（）

。修改您的代码如下

  $educationGroup = $value->entity;
  $honors = isset($educationGroup->field_academic_honors->target_id) ? $educationGroup->field_academic_honors->value : '';
  $degree = isset($educationGroup->field_degrees->target_id) ? $educationGroup->field_degrees->entity->name->value : '';
  $schoolName = isset($educationGroup->field_education->target_id) ? $educationGroup->field_education->entity->name->value : '';
  $yearGraduated = isset($educationGroup->field_year_graduated->target_id) ? $educationGroup->field_year_graduated->value : '';

无需每次使用

实体

引用获取段落和术语时都加载它们

$degree = '';
if(isset(Term::load($degreeID)->getName())) {
  $degree = $degreeObject->getName();
}

  $educationGroup = $value->entity;
  $honors = isset($educationGroup->field_academic_honors->target_id) ? $educationGroup->field_academic_honors->value : '';
  $degree = isset($educationGroup->field_degrees->target_id) ? $educationGroup->field_degrees->entity->name->value : '';
  $schoolName = isset($educationGroup->field_education->target_id) ? $educationGroup->field_education->entity->name->value : '';
  $yearGraduated = isset($educationGroup->field_year_graduated->target_id) ? $educationGroup->field_year_graduated->value : '';