Question

我有一个页面显示Employees Masterlist，我想做的就是单击Employee No.时将查看该员工的时间表。

由于我的研究，我尝试使用它。

在我的routes.py

@app.route("/employee/<int:employee_id>")
def employee(employee_id):
  employee = Employee.query.get_or_404(employee_id)
  return render_template('emp_timesheet.html', employee=employee)

这是我的masterlist.html

{% extends 'header.html' %}

{% block content %}
<table width="100%" class="table table-striped table-bordered table-hover" id="dataTables-example">
    <thead>
        <tr>
            <th>Employee Number</th>
            <th>Name</th>
            <th>Contract</th>
            <th>Position</th>
            <th>Salary</th>
        </tr>
    </thead>
    <tbody>
        {% for employee in list_employee %}
        <tr class="odd gradeX">
            <td><a href="{{ url_for('employee', employee_id=employee.id) }}">{{ employee.employee_number }}</a></td>
            <td>{{ employee.last_name }}, {{ employee.first_name }}</td>
            <td>{{ employee.contract }}</td>
            <td class="center">{{ employee.title }}</td>
            <td class="center">{{ employee.salary }}</td>
        </tr>
        {% endfor %}
    </tbody>
</table>

{% endblock %}

但是我遇到了这个错误：

File "/home/jxmtsi/Desktop/flask_training/rep/templates/header.html", line 293, in top-level template code
{% block content %}{% endblock %}
File "/home/jxmtsi/Desktop/flask_training/rep/templates/masterlist.html", line 27, in block "content"
<td><a href="{{ url_for('employee', employee_id=employee.id) }}">{{ employee.employee_number }}</a></td>  
File "/home/jxmtsi/.local/lib/python3.6/site-packages/jinja2/environment.py", line 430, in getattr
return getattr(obj, attribute)
jinja2.exceptions.UndefinedError: 'employee' is undefined

Answer 1

我认为，问题出在您的Python代码中，更确切地说是您的应用程序与SQL库之间的通信中的问题。或者，也许您在SQL数据库中没有有关请求的employee_id的数据。

检查，方法employee中的变量employee (employee_id)是否正在从您的数据库接收数据。例如，尝试print(employee.last_name)：

@app.route("/employee/<int:employee_id>")
def employee(employee_id):
  employee = Employee.query.get_or_404(employee_id)
  print(employee.last_name) # or print other value from table (Model) Employee
  # print(employee.id)
  return render_template('emp_timesheet.html', employee=employee)

烧瓶-jinja2.exceptions.UndefinedError：'employee'未定义

1 个答案: