如何为django中的变量分配新值

Question

我的源代码中有以下数组：

values: [
    {
          "Question" :  ["question two"]   ,    "Answer" :  ["answer to question 2"]} 
     ,          {
          "Question" :  ["question one"]   ,    "Answer" :  ["answer to question one"] } 
     ,          {
          "Question" :  ["question one"]   ,    "Answer" :  ["another answer to question one"]}

我需要将信息呈现为 ListView 以使其看起来像这样：

question two
answer to question 2
question one
answer to question one
another answer to question one

我正在使用 Django 和 HTML 来呈现视图，这是我目前的代码

     <div>
     {% with "" as name %}  
     {% for value in view.data.values %}
     <li> 
        {% ifnotequal value.Question name %}
            <div>{{value.Question|default:''}}  {{value.question_creation_date}}</div>
         {% endifnotequal %}
            <div>{{value.user_creation_date}} {{value.Answer}}</div>
     </li>
      <!-- set name equal to value.Question -->
      {% endfor%}
      {% endwith %}
     </div>

如何显示 ListView？

Answer 1

您已经为它建立了数据结构。并根据它在模板上渲染它。

例如

查看代码，

context = {}
values = [

{'question':'A','answer':'a'},
{'question':'B','answer':'b'},
{'question':'C','answer':'c'},
{'question':'D','answer':'d'},

]
context['values'] = values

模板代码，

{% for i in values %}
<p>
{{i.question}}
</br>
{{i.answer}}
</p>
{% endfor %}

Answer 2

Python 没有数组 Python 有列表、字典、元组现在看看你的代码你有这个： values: [ { "Question" : ["question two"] , "Answer" : ["answer to question 2"]} , { "Question" : ["question one"] , "Answer" : ["answer to question one"] } , { "Question" : ["question one"] , "Answer" : ["another answer to question one"]}
这不正确！您在代码末尾错过了 ]!

再看一遍你说==> values: [ { "Question" : ["question two"] , "Answer" : ["answer to question 2"]} , { "Question" : ["question one"] , "Answer" : ["answer to question one"] } , { "Question" : ["question one"] , "Answer" : ["another answer to question one"]}

这是一个字典列表，因为你有 value=[dict_0, dict_1, ...]

现在假设您在视图中重新返回它！要渲染它，您可以这样做：
<code>{% for v in values %}: <div class="question_answer"> <p class="line_question_answer"> <span class="question"> {% trans "question"%}: {{v.Question}} </span> <span class="answer"> {% trans "Answer" %}: {{v.Answer}} </span> </p> </div> {% endfor %}

Answer 3

A ListView 呈现数据库中的对象列表。因此，您需要有两种模型：一种用于 Question，一种用于 Answer（注意单数的使用）。

from django.db import models

class Question(models.Model):
    text = models.CharField(max_length=250)

class Answer(models.Model):
    question = models.OneToOneField(question)
    text = models.CharField(max_length=250)

现在您已经有了模型，我们可以使用 ListView 来渲染视图，如下所示：

from django.views.generic import ListView
from . import models

class MyView(ListView):
    model = Question

然后在您应用的以下文件夹中创建一个模板：templates/appname/templates/question_list.html 包含以下内容：

<!DOCTYPE html>
<html>
<body>
  <p>
  {% for question in object_list %}
      {{ question.text }}<br>
      {{ question.answer.text }}
  {% empty %}
    No questions found.
  {% endfor %}
  </p>
</body>
</html>

最后，在 urls.py 主文件中包含一个 URLconf，包含以下行：

from appname.views import MyView
...
url(r'^myapp/$', MyView.as_view()),
...

这应该可以帮助您入门。有人要补充更正吗？

如何为django中的变量分配新值

how to assign a new value to a variable in django

html

python

django

django-templates

django-views