Django:HTML表单操作使用2个参数定向到视图(或URL?) [英] Django : HTML form action directing to view (or url?) with 2 arguments

问题描述

大约一周前开始学习django，然后碰壁.非常感谢您的启发...

Started learning django about a week ago and ran into a wall. Would really appreciate any enlightenment...

models.py

models.py

class data(models.Model):
    course = models.CharField(max_length = 250)

    def __str__(self):
        return self.course

html

将models.course中的对象转换为schlist

Converted the objects in models.course to schlist

<link rel="stylesheet" type="text/css" href="{% static '/chosen/chosen.css' %}" />
<form action={% views.process %}  method="GET">
      <div>
        <h4 style="font-family:verdana;">First Course: </h4>
        <select data-placeholder="Course" style="width:350px;" class="chosen-select" tabindex="7">
          <option value=""></option>
          {% for item in schlist %}
          <option> {{ item }} </option>
          {% endfor %}
        </select>
      </div>
      </br>
      <div>
        <h4 style="font-family:verdana;">Second Course:</h4>
        <select data-placeholder="Course" style="width:350px;" class="chosen-select" tabindex="7">
          <option value=""></option>
          {% for item in schlist %}
          <option> {{ item }} </option>
          {% endfor %}
        </select>
      </div>
      </br>
  <input type="submit" value="Compare!" />
</form>

urls.py(我怀疑是否可行..

urls.py (having my doubts if this works..)

urlpatterns = [
    url(r'^(\d+)/(\d+)$',views.process, name = 'process'),
]

view.py

def process(request,q1 ,q2):
    obj1= get_object_or_404(Schdata, course = q1)
    obj2= get_object_or_404(Schdata, course = q2)
 ........

想知道表单动作是否有可能将动作定向到

Was wondering if it is possible for the form action to direct the action to

选择了2个参数的(1)view.py或(2)url.py(最终到view.py)?

(1) view.py or (2) url.py (and eventually to a view.py) with 2 arguments selected?

如果是这样，表单动作应该如何?{{view?}}或{{url?}}.我是否错过了HTML中参数的定义?

If so how should the form action be? {{view ?}} or {{url ?}}. Am I missing out the definition of my arguments in my HTML?

指向views.py:

Directing to views.py:

用户输入为 CharField ，可以使用 get_object_or_404 来获取模型pk.但是，在定义我的urls.py时，由于我的url参数是主键，因此会出现Noreverse错误.

User input is CharField, could use get_object_or_404 to get the model pk. However when defining my urls.py I would get a Noreverse error as my url arguments is the primary key.

指向urls.py:

URL参数是主键.从我的角度来看，我需要先将用户输入的 Charfield 转换为pk，然后再将其传递给urls.py

Url arguments is primary key. From the way I see it, I need to magically convert my User input Charfield to a pk before passing it to urls.py

在Django中是否有用于 get()的(或)函数?例如 get_object_or_404(pk = q1或course = q1)?

Is there a (or) function for get() in django? E.g get_object_or_404(pk = q1 or course = q1)?

非常感谢您的任何建议.盯着这个看了好几个小时.

Would really appreciate any advice. Been staring at this for hours.

推荐答案

您正尝试在Django中使用URL的反向解析.

You are trying to use the reverse resolution of urls in Django.

在您的html文件中，正确的表单操作网址应为以下内容，方法应为POST:

In your html file correct form action url to the following and method should be POST:

<form action={% url 'process' %}  method="POST">

如果您尝试传递参数，请使用以下参数:

In case you are trying to pass parameters along then use this:

<form action={% url 'process' request.user.id 4 %}  method="POST">

参考: https://docs.djangoproject.com/en/1.10/topics/http/网址/

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