Php 无法访问字符串变量的属性

在我的控制器中，我只是在我的细枝视图上传递一些用户。 以下是我的功能：

public function viewAction($id)
    {
        $em = $this->getDoctrine()->getManager();
        $planningRepo = $em->getRepository('SimonPediBundle:Planning');
        $userRepo = $em->getRepository('SimonUserBundle:User');

        $user = $this->getUser();
        $planningId = $user->getPlanning()->getId();
        $planning = $planningRepo->find($planningId);


        $users = $userRepo->findByPlanning($planningId);

        if (null === $planning) {
            throw new NotFoundHttpException("Le planning d'id ".$id. "n'existe pas.");
        }

        return $this->render('planningAction/planning.html.twig', array('planning' => $planning,
                                                                        'users' => $users,));
    }

这是我的细枝视图，我想在其中显示html表上的一些信息：

<tbody>
                    <tr>
                    <th scope="row">Responsable</th>
                     {% for i in 1..5 %}
                        {% set assigned_user = ' ' %}
                        {% for user in users if user.planningday == i%}
                            {% set assigned_user = user %}
                        {% endfor %}
                        <td>{{assigned_user.name}} {{assigned_user.lastname}}</td>
                        {% endfor %}
                    </tr>
                    <tr>
                        <th scope="row">Description</th>
                        {% for i in 1..5 %}
                        {% set assigned_user = ' ' %}
                        {% for user in users if user.planningday == i%}
                            {% set assigned_user = user %}
                        {% endfor %}
                        <td>{{assigned_user.planningcontent}}</td>
                        {% endfor %}
                    </tr>
                </tbody>

用这条线

{% set assigned_user = ' ' %}

将“assigned_user”的值设置为“”。 如果您没有符合此条件的用户

{% for user in users if user.planningday == i%}

---

值将保留为字符串而不是对象。

如果使用对象，则无需将默认值设置为字符串。将其设置为

null

并检查是否找到用户

<tbody>
    <tr>
    <th scope="row">Responsable</th>
     {% for i in 1..5 %}
        {% set assigned_user = null %}
        {% for user in users if user.planningday == i%}
            {% set assigned_user = user %}
        {% endfor %}
        <td>
        {% if not assigned_user is null %}
            {{assigned_user.name}} {{assigned_user.lastname}}
        {% endif %}
        </td>
        {% endfor %}
    </tr>
    <tr>
        <th scope="row">Description</th>
        {% for i in 1..5 %}
        {% set assigned_user = null %}
        {% for user in users if user.planningday == i%}
            {% set assigned_user = user %}
        {% endfor %}
        <td>
        {% if not assigned_user is null %}
            {{assigned_user.planningcontent }}
        {% endif %}     
        </td>
        {% endfor %}
    </tr>
</tbody>

责任的
{1..5%中的i为%1}
{%set assigned_user=null%}
{如果user.planningday==i%}
{%set assigned_user=user%}
{%endfor%}
{%如果未分配\用户为空%}
{{assigned_user.name}{{assigned_user.lastname}
{%endif%}
{%endfor%}
描述
{1..5%中的i为%1}
{%set assigned_user=null%}
{如果user.planningday==i%}
{%set assigned_user=user%}
{%endfor%}
{%如果未分配\用户为空%}
{{assigned_user.planningcontent}
{%endif%}
{%endfor%}

但我有符合条件的用户，并且我的上一个项目中使用了相同的细枝循环。我不明白为什么这里不起作用$users变量的内容是什么？你的循环没有多大意义。为什么

没有围绕

for循环

和用户的显示在循环中完成？

{% for user in users if user.planningday == i%}

<tbody>
    <tr>
    <th scope="row">Responsable</th>
     {% for i in 1..5 %}
        {% set assigned_user = null %}
        {% for user in users if user.planningday == i%}
            {% set assigned_user = user %}
        {% endfor %}
        <td>
        {% if not assigned_user is null %}
            {{assigned_user.name}} {{assigned_user.lastname}}
        {% endif %}
        </td>
        {% endfor %}
    </tr>
    <tr>
        <th scope="row">Description</th>
        {% for i in 1..5 %}
        {% set assigned_user = null %}
        {% for user in users if user.planningday == i%}
            {% set assigned_user = user %}
        {% endfor %}
        <td>
        {% if not assigned_user is null %}
            {{assigned_user.planningcontent }}
        {% endif %}     
        </td>
        {% endfor %}
    </tr>
</tbody>