分页Django表单 [英] Paginate Django formset

问题描述

我有一个模型表单，我想使用Django的Paginator一次显示10个表单，但不能像 paginator = Paginator（formset，10）。这样做的正确方法是什么，如果有办法？

解决方案

这是一个我发现的解决方案的通用示例我的问题：

在 forms.py 文件中：

$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / code>

在 views.py 文件中：

  FormSet = modelformset_factory（MyModel，form = MyForm，extra = 0）
如果request.method =='POST'：
 formset = FormSet（request.POST，request.FILES）
＃你的验证和其余的'POST'代码
 else：
 query = MyModel.objects.filter（condition）
 paginator = Paginator（查询，10）＃每页显示10个表单
 page = request.GET.get（'page'）
 try：
 objects = paginator.page（page）
除了PageNotAnInteger：
 objects = paginator.page（1）
 exc ept EmptyPage：
 objects = paginator.page（paginator.num_pages）
 page_query = query.filter（id__in = [object.id for objects in objects]）
 formset = FormSet（queryset = page_query ）
 context = {'objects'：objects，'formset'：formset} 
 return render_to_response（'template.html'，context，
 context_instance = RequestContext（request））
  

您需要使用当前页面中的对象创建表单集，否则，当您尝试执行 formset = FormSet（request.POST，request.FILES）在POST方法中，Django引发了MultiValueDictKeyError错误。

code> template.html file：

  {％if objects％} 
< form action =method =post> 
 {％csrf_token％} 
 {{formset.management_form}} 
 {form for formset.forms％} 
 {{form.id}} 
< ;！ - 显示每个表单 - > 
 {{form.as_p}} 
 {％endfor％} 
< input type =submitvalue =保存/> 
< / form> 
 
< div class =pagination> 
< span class =step-links> 
 {％if objects.has_previous％} 
< a href =？page = {{objects.previous_page_number}}>上一个< / a> 
 {％endif％} 
 
< span class =current> 
 {{objects.paginator.num_pages}}的{{objects.number}}} 
< / span> 
 
 {％if objects.has_next％} 
< a href =？page = {{objects.next_page_number}}> next< / a> 
 {％endif％} 
< / span> 
< / div> 
 {％else％} 
< p>没有对象。< / p> 
 {％endif％} 
  

I have a model formset that I want to display 10 forms at a time using Django's Paginator, but it can't be done like paginator = Paginator(formset, 10). What's the correct way to do this, if there is a way?

解决方案

This is a generic example of the solution I found to my problem:

In the forms.py file:

class MyForm(ModelForm):
    class Meta:
        model = MyModel
        fields = ('description',)

In the views.py file:

FormSet = modelformset_factory(MyModel, form=MyForm, extra=0)
if request.method == 'POST':
    formset = FormSet(request.POST, request.FILES)
    # Your validation and rest of the 'POST' code
else:
    query = MyModel.objects.filter(condition)
    paginator = Paginator(query, 10) # Show 10 forms per page
    page = request.GET.get('page')
    try:
        objects = paginator.page(page)
    except PageNotAnInteger:
        objects = paginator.page(1)
    except EmptyPage:
        objects = paginator.page(paginator.num_pages)
    page_query = query.filter(id__in=[object.id for object in objects])
    formset = FormSet(queryset=page_query)
    context = {'objects': objects, 'formset': formset}
    return render_to_response('template.html', context,
                              context_instance=RequestContext(request))

You need to create the formset with the objects in the present page, otherwise, when you try to do formset = FormSet(request.POST, request.FILES) in the POST method, Django raises a MultiValueDictKeyError error.

In the template.html file:

{% if objects %}
    <form action="" method="post">
        {% csrf_token %}
        {{ formset.management_form }}
        {% for form in formset.forms %}
            {{ form.id }}
            <!-- Display each form -->
            {{ form.as_p }}
        {% endfor %}
        <input type="submit" value="Save" />
    </form>

    <div class="pagination">
        <span class="step-links">
            {% if objects.has_previous %}
                <a href="?page={{ objects.previous_page_number }}">Previous</a>
            {% endif %}

            <span class="current">
                Page {{ objects.number }} of {{ objects.paginator.num_pages }}
            </span>

            {% if objects.has_next %}
                <a href="?page={{ objects.next_page_number }}">next</a>
            {% endif %}
        </span>
    </div>
{% else %}
    <p>There are no objects.</p>
{% endif %}

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