Django:如何根据调用的请求方法更改上下文字典

当方法为GET时,请尝试:

results = ""

你可以这样做

def fx_rates(request):
    show_div = 'none'
    if request.method != 'POST':
        form = FxForm()
        results=[]
    else:
        show_div = 'block'
        form = FxForm(request.POST)
        if form.is_valid():
            scraper = FxScraper()
            scraper.from_currencies.append(form.cleaned_data['from_currencies'])
            scraper.dates = form.cleaned_data['dates'].split(" ")
            scraper.to_currency = form.cleaned_data['to_currency']
            results = scraper.results()

    context = {'form':form, 'results':results, 'show_div':show_div}
    return render(request, 'map_assistant/fx_rates.html',context)

你的html看起来像这样

<div style="display:{{show_div}}">
   <ul>     
  {% for result in results %}
    <li>{{result}}</li>
  {% endfor %}        
</ul>
</div>

或者干脆查一下

 {% if result %}
    <ul>     
        {% for result in results %}
    <li>{{result}}</li>
        {% endfor %}        
    </ul>
{% else %}

{% endif %}