这是我的第一个编码python / flask / sqlalchemy项目。我想创建一个页面,人力资源可以将选定的项目分配给选定的雇员。一名员工可以从事许多项目。许多员工可以在一个项目中工作(多对多关系)。
我的问题,我无法为所选雇员获得所选项目并填写关联表。我尝试搜索,但找不到相关主题。感谢您的回复!
数据库部分的代码my_db.py:
Employee_Task = db.Table('employee_task',
db.Column('employee_id', db.Integer, db.ForeignKey('employee.employee_id')),
db.Column('task_id', db.Integer, db.ForeignKey('task.task_id'))
)
class Employee(db.Model):
__tablename__ = 'employee'
employee_id = db.Column(db.Integer, primary_key=True)
employee_name = db.Column(db.String(100), nullable=True)
rel_task = db.relationship("Task", secondary=Employee_Task)
# class Task
class Task(db.Model):
__tablename__ = 'task'
task_id = db.Column(db.Integer, primary_key=True)
task_name = db.Column(db.String(100), nullable=True)
def __repr__(self):
return "<Task %r>" % self.name
主代码的一部分,如您所见,它添加了具有相同的employee_id和task_id的新行,但我想添加带有选择的employee_id和带有选择的task_id的新行
假设人力资源分配给第五名员工第八项目时,我想在关联表的一行中看到:employee_id列中的5project_id列中的8
main.py:
@app.route("/employee", methods=['POST', 'GET'])
def employee():
tasks_all = Task.query.all()
workers_all = Employee.query.all()
if request.method == 'POST'
idS = str(int(request.form.get("Assigned_Task")))
Employee.id = idS[0] #this is choosen employee, I want add this employee to association table
Task.id = idS[-1] #this is choosen project, I want add this project to association table
e = Employee()
t = Task()
e.rel_task.append(t)
db.session.add(e)
db.session.commit()
return render_template('my.html', tasks_all=tasks_all, workers_all=workers_all, form=search,
title='List of Employee')
html页面的一部分(您可以看到它的表,对于给定的员工HR列表可以从下拉菜单中选择一个项目并进行分配)
<table class="table table-hover">
<thread>
<tr class="table-info font-italic">
<th>Employees</th>
<th>Projects</th>
</tr>
</thread>
<tbody>
{% for worker in workers_all %}
<tr>
<td rowspan="1">{{ worker.employee_name }}</td>
<td rowspan>
<form action="/employee" method="POST">
<div class="input-group">
<select class="form-control" name="Assigned_Task">
{% for task in tasks_all %}
<option value="{{ worker.employee_id }} , {{ task.task_id }}">
{{ task.task_name }}
</option>
{% endfor %}
</select>
<div class="input-group-append">
<button type=submit value="" class="btn btn-sm btn-info">
<i class="fas fa-user-check"></i>
<a class="mr-1">assign</a>
</button>
</div>
</div>
</form>
</td>
</tr>
{% endfor %}
</tbody>
</table>
import ast
@app.route("/employee", methods=['POST', 'GET'])
def employee():
tasks_all = Task.query.all()
workers_all = Employee.query.all()
if request.method == 'POST'
idS = ast.literal_eval(request.form.get("Assigned_Task"))
Employee.id, Task.id = idS
e = Employee()
t = Task()
e.rel_task.append(t)
db.session.add(e)
db.session.commit()
return render_template('my.html', tasks_all=tasks_all, workers_all=workers_all, form=search,
title='List of Employee')