类型错误：（）得到了意想不到的关键字参数

Question

我无法弄清楚我的函数editMenuItem()从哪里获取unknown关键字参数restaurant_id。我搜索了类似的问题，但找不到解决方案。如果有人有任何建议，我会非常感激他们。

Traceback (most recent call last): 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1836, in __call__ 
    return self.wsgi_app(environ, start_response) 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1820, in wsgi_app 
    response = self.make_response(self.handle_exception(e)) 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1403, in handle_exception 
    reraise(exc_type, exc_value, tb) 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app 
    response = self.full_dispatch_request() 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1477, in full_dispatch_request 
    rv = self.handle_user_exception(e) 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1381, in handle_user_exception 
    reraise(exc_type, exc_value, tb) 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1475, in full_dispatch_request 
    rv = self.dispatch_request() 
    File "/usr/lib/python2.7/dist-packages/flask/app.py", line 1461, in dispatch_request 
    return self.view_functions[rule.endpoint](**req.view_args) 
TypeError: editMenuItem() got an unexpected keyword argument 'restaurant_id' 

editMenuItem()

### Edit a menu item. ### 
@app.route('/restaurant/<int:restaurant_id>/menu/<int:menuitem_id>/edit/', 
      methods=['GET', 'POST']) 
def editMenuItem(menuitem_id): 
    menuitem = session.query(MenuItem).filter_by(id=menuitem_id).one() 
    if request.method == 'POST': 
     if request.form['newname']: 
      menuitem.name = request.form['newname'] 
     if request.form['newdescription']: 
      menuitem.description = request.form['newdescription'] 
     if request.form['newprice']: 
      menuitem.description = request.form['newprice'] 
     session.add(menuitem) 
     session.commit() 
     return redirect(url_for('showMenu', restaurant_id=menuitem.restaurant_id)) 
    else: 
     return render_template('editMenuItem.html', menuitem=menuitem) 

Relevant html

{% extends "base.html" %} 
{% block content %} 
<div class="row"> 
    <div class="six columns"> 
    <form action="{{ url_for('editMenuItem', menuitem_id = menuitem.id) }}" method="post"> 
     <div class="six columns"> 
     <div class="six columns"> 
      Menu Item ID : {{ menuitem.id }} 
      <br> 
      Menu Item Name : {{ menuitem.name }} 
      <br> 
      Menu Item Description : {{ menuitem.description }} 
      <br> 
      Menu ITem Price : {{ menuitem.price }} 
      <br> 
     </div> 
     <br> 
     <div class="six columns"> 
      <div class="six columns"> 
      <label for="newItemName">New item name</label> 
      <input type="text" id="newname" class="form" name="newname" placeholder="Enter new name here"> 
      <br> 
      </div> 
      <div class="six columns"> 
      <label for="newItemDescription">New item Description</label> 
      <input type="text" id="newdescription" class="form" name="newdescription" placeholder="Enter new description here"> 
      <br> 
      </div> 
      <div class="six columns"> 
      <label for="newItemPrice">New item Price</label> 
      <input type="text" id="newprice" class="form" name="newprice" placeholder="Enter new price here"> 
      <br> 
      </div> 
     </div> 
     <div class="six columns"> 
      <button type="submit" class="button">Edit</button> 
      <a href="{{ url_for('showMenu') }}" class="button">Cancel</a> 
      <br> 
     </div> 
     </div> 
    </form> 
    </div> 
</div> 
{% endblock %} 

我不知道在哪里这个关键字参数从为restaurant_id不应该是必要的，以便给我的功能来工作。我在这里做错了什么？谢谢。

Answer 1

感谢Wombatz暗示我能够通过改变我的editMenuItem函数和更改必要的模板来解决问题。

更新功能：

### Edit a menu item. ### 
@app.route('/restaurant/<int:restaurant_id>/menu/<int:menuitem_id>/edit/', 
      methods=['GET', 'POST']) 
def editMenuItem(menuitem_id, restaurant_id): 
    menuitem = session.query(MenuItem).filter_by(id=menuitem_id).one() 
    restaurant = session.query(Restaurant).filter_by(id=restaurant_id).one() 
    if request.method == 'POST': 
     if request.form['newname']: 
      menuitem.name = request.form['newname'] 
     if request.form['newdescription']: 
      menuitem.description = request.form['newdescription'] 
     if request.form['newprice']: 
      menuitem.description = request.form['newprice'] 
     session.add(menuitem) 
     session.commit() 
     return redirect(url_for('showMenu', restaurant_id=menuitem.restaurant_id)) 
    else: 
     return render_template('editMenuItem.html', menuitem=menuitem, restaurant=restaurant) 

更新的模板：

<form action="{{ url_for('editMenuItem', menuitem_id = menuitem.id, restaurant_id = restaurant.id) }}" method="post"> 

<a href="{{ url_for('showMenu', restaurant_id=menuitem.restaurant_id) }}" class="button">Cancel</a> 

我是新来的，所以我不知道使用本网站如果我能“给予好评”的评论Wombatz，但由于为提示。