如何在控制器中为addChild(）输出带有动态生成的捕获的子视图

给出以下手册：在此处输入链接说明

当我知道控制器中使用的captureTo（例如" <?php echo $this->article ?>"）时，很容易拥有一个子视图并回显它，但是当我动态生成视图模型并将它们分配给动态生成的captureTo时，我可以做类似的事情吗addChild（）函数：

        foreach ($studentEvaluations as $studEval) {
            $studEvalId = $studEval->getEvalId();
            $formViewModel = $this->buildStudentEvaluationViewModel($studEval);
            $viewModel->addChild($formViewModel,  $studEvalId);
        }

我尝试了以下方法，但它不起作用：

    <?php foreach ($this->viewModel()->getCurrent()->getIterator() as $studId => $studEval) : ?>
        <tr>
            <td><?php echo $this->escapeHtml($studEval->fname); ?></td>
            <td><?php echo $this->escapeHtml($studEval->lname); ?></td>
            <td><?php echo $this->escapeHtml($studEval->formName); ?></td>
            <td><?php echo $this->escapeHtml($studEval->supdated); ?></td>
            <td><?php echo $this->escapeHtml($studEval->screated); ?></td>
            <td>
                <button class="btn btn-primary btn-lg"
                        data-toggle="modal"
                        data-target="#myModal<?php echo $studId; ?>"
                        data-loading-text="Loading..."> Edit
                </button>
                <!-- Modal -->
                <div class="modal fade" id="myModal<?php echo $studId; ?>" tabindex="-1" role="dialog"
                     aria-labelledby="myModalLabel" aria-hidden="true">
                    <div class="modal-dialog">
                        <div class="modal-content">
                            <div class="modal-header">
                                <button type="button" class="close" data-dismiss="modal"
                                        aria-hidden="true">&times;</button>
                                <h4 class="modal-title" id="myModalLabel">Modal title</h4>
                            </div>
                            <div class="modal-body">
                                <p> 
<!-- HERE ->>>>>>>>> -->               <?php echo $studEval ?> 
                                </p>
                            </div>
                            <div class="modal-footer">
                                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                                <button type="button" class="btn btn-primary">Save changes</button>
                            </div>
                        </div>
                    </div>
                </div>
                                </td>

        </tr>
    <?php endforeach; ?>

编辑 1

当我尝试以这种方式输出视图时，这是一个错误：

Catchable fatal error: Object of class Zend'View'Model'ViewModel could not be converted to string in C:'dev'projects'OnlineFieldEvaluation'module'OnlineFieldEvaluation'view'online-field-evaluation'online-field-evaluation'test3.phtml on line 62