我的表单中有3个单选按钮，当我点击每个单选按钮时，会出现一个表单，并且我的回测测试的参数会发生变化。问题是，当我点击保存按钮时，没有保存任何内容。在我添加单选按钮检查之前，保存按钮正在工作。单击单选按钮可更改参数策略。当我检查单选按钮但我不知道如何解决它时，错误是保存功能。
的 Models.py
class Parameters(models.Model):
MARKET= ((1,'Nasdaq'),(2, 'Nyse'),(3,'Amex'),)
SECTOR_CHOICES = ((1,'Utilities'),(2, 'Basic Materials'),(3,'Healthcare'), (4,'Services'),(5,'Financial'),)
user = models.ForeignKey(User)
title = models.CharField('title', max_length=100, default='', blank=True, help_text='Use an indicative name, related to the chosen parameters')
type = models.CharField('forecast type', choices=FORECAST_TYPES, max_length=20, default="backtest")
strategy = models.CharField('Strategy', choices=STRATEGY_CHOICES, max_length=20,default="Long")
#input characteristics
price_1_min = models.FloatField('1. Price, min', default=0.1, validators=[MinValueValidator(0.1), MaxValueValidator(20000)])
price_1_max = models.FloatField('1. Price, max', default=20000, validators=[MinValueValidator(0.1), MaxValueValidator(20000)])
stocks_num_2_min = models.IntegerField('2. Number of selected stock, min', default=3, validators=[MinValueValidator(0), MaxValueValidator(100)])
stocks_num_2_max = models.IntegerField('2. Number of selected stock, max', default=7, validators=[MinValueValidator(1),])
holding_period = models.IntegerField('3. Holding Period', default=1, validators=[MinValueValidator(1),])
volume = models.IntegerField('4. Volume', default=0, validators=[MinValueValidator(0),])
market = models.CharField('Market', max_length=30, null=True)
sector = models.CharField('Sector', max_length=30, null=True)
参数保存在表格中的html：
{% extends 'base.html' %}
{% block content %}
<div> {% if user.is_authenticated %}
{% if user.profile.is_active %}
Saved from "Backtesting"
<ul>
{% for param in user.parameters_set.all %}
{% if param.type == "backtest" %}
<table style="width:100%">
<tr>
<th> Saved File </th>
<th> Created at </th>
<tr>
<td> <a href='{{param.get_backtest_url}}'>{{param.title}} </a> </td>
<td> {{param.created_at}} </td>
<td> {{param.strategy}} </td>
</tr>
</table>
{% endif %}
{% endfor %}
</ul>
{% else %}
<p>
You are logged in but your account has expired. You can reactivate your account by buying one of <a href="{% url 'pricing' %}">our services</a>. You are welcome however to keep using our free services!
</p>
{% endif %}
{% else %}
<p>
If you “login” you can save your parameters for future use. Please <a href="{% url 'auth_login' %}">login</a>, or <a href="{% url 'registration_register' %}">register</a> and get <strong><span class = "greenText">1 Month free trial</span></strong>.
</p>
{% endif %}
</div>
{% endblock %}
View.py
def backtest(request, pk=None):
if pk is not None:
param = get_object_or_404(Parameters, pk=pk, user=request.user)
form = BacktestForm(request.POST or None, instance=param)
else:
form = BacktestForm(request.POST or None)
if request.method == 'POST':
if form.is_valid():
if 'save' in request.POST:
obj = form.save(commit= False)
obj.user = request.user
if ('toggle-tab1').checked in request.POST:
obj.strategy="Long"
elif ('toggle-tab2').checked in request.POST:
obj.strategy="Short"
else :
obj.strategy="Long and Short "
obj.type = "backtest"
obj.save()
messages.info(request, 'Saved!')
return redirect(obj.get_backtest_url())
else:
obj = ForecastQueue.create(request.user, 'backtest', json.dumps(request.POST))
obj.save()
return redirect(obj.get_url())
else:
messages.info(request, 'Please check entered data')
data = {
'active_page': 'backtest',
'form': form,}
else:
data = {'active_page': 'backtest',
'form': form,
}
return render(request, 'backtest.html', data)
模板的HTML
{ % extends 'base.html' %}
{% block title %}Backtesting{% endblock %}
{% block content %}
<div class="page-header">
<h1>Backtesting{% if form.instance.pk %}: {{form.instance.title}} {% endif %} <a data-toggle="popover" data-content="
<img src='{{STATIC_URL}}img/tutorial/documentation/img20.png'class='img-responsive img-rounded'/>
"><span class="glyphicon glyphicon-info-sign" aria-hidden="true"></span></a></h1>
</div>
<div class="row">
<div class='col-md-9'>
<div id="tabs">
<input type="radio" name="tabs" id="toggle-tab1" checked="checked" />
<label for="toggle-tab1">Long</label>
<input type="radio" name="tabs" id="toggle-tab2" />
<label for="toggle-tab2">Short</label>
<input type="radio" name="tabs" id="toggle-tab3" />
<label for="toggle-tab3">Long and Short</label>
<div id="tab1" class="tab" >
<form action="{% url "backtest" %}" method='POST' role='form' id='form'>
{% csrf_token %}
{% include 'tags/parameters_form.html' %}
<br />
{% include 'tags/parameters_backtest_form.html' %}
<br/>
{% if user.is_authenticated %}
<input type='submit' id='run' value='Run' class='btn btn-default'>
{% if user.profile.is_active %}
Name: {{ form.title }} <input type='submit' name='save' value='Save' class='btn btn-default'>
{% else %}
<p>
Expired account! you need to reactivate in order to save parameters.
</p>
{% endif %}
{% else %}
Please <a href="{% url 'auth_login' %}">login</a> in order to Run backtesting!
</br>
Our system needs your email in order to notify you once one or more of your simulations are done. This is a safer way for you to keep track of your previous simulations (/jobs).
{% endif %}
</form>
答案 0 :(得分：1)
在下面的表格标签中添加所有3个无线电字段，并为每个单选按钮添加不同值的值。
<form action="{% url "backtest" %}" method='POST' role='form' id='form'>
{% csrf_token %}
<input type="radio" name="tabs" value="first" id="toggle-tab1" checked="checked" />
<label for="toggle-tab1">Long</label>
<input type="radio" name="tabs" value="second" id="toggle-tab2" />
<label for="toggle-tab2">Short</label>
<input type="radio" name="tabs" value="third" id="toggle-tab3" />
<label for="toggle-tab3">Long and Short</label>
....
当您提交此表单时，您将在request.POST中获得带有值的“标签”，因此请按照以下代码进行查看。
if form.is_valid():
if 'save' in request.POST:
obj = form.save(commit= False)
obj.user = request.user
tab_value = request.POST.get('tabs')
if tab_value == 'first':
obj.strategy="Long"
elif tab_value == 'second':
obj.strategy="Short"
else :
obj.strategy="Long and Short