Python Django表单提交-意外行为
我在Django的一个网页上有一个表单，该表单当前显示特定项目的预算信息。预算和项目都是数据库中的模型 每个项目可以有多个预算，但这些预算中只有一个是“当前预算” 信息的显示方式是有许多称为“演示”的“平铺”图标（每个预算一个）。选择其中一个“演示”互动程序后，互动程序下方会显示一个表单，供用户填写有关该演示的信息（备注、与会者、日期等）。列表中最后一个“互动程序”图标始终是一个空白互动程序，标题为“添加演示文稿”，用户可以单击该图标为项目添加新演示文稿，并且它将在现有互动程序下显示表单的空白副本 表单包括两个用于上载图像的字段（图像将通过上载到的预算对象与特定项目关联） 填写表单并将图像文件添加到表单后，用户应单击表单底部的“提交”按钮将所有内容上载到数据库。然后，当返回此页面时，他们应能够单击该特定演示文稿的“平铺”图标，并且应显示表单，并自动弹出他们已经输入了以前输入的信息，以及他们上传的附加图像文件 这项工作目前正如期进行，然而，由于某些原因，当点击表单底部的“上传”按钮，将表单中输入的图像和其他信息上传到项目预算中时，似乎又在网页上添加了两个空白的“演示”贴片……我真的不明白为什么会发生这种情况 此表单的HTML为：Python Django表单提交-意外行为,python,django,with-statement,Python,Django,With Statement,我在Django的一个网页上有一个表单，该表单当前显示特定项目的预算信息。预算和项目都是数据库中的模型 每个项目可以有多个预算，但这些预算中只有一个是“当前预算” 信息的显示方式是有许多称为“演示”的“平铺”图标（每个预算一个）。选择其中一个“演示”互动程序后，互动程序下方会显示一个表单，供用户填写有关该演示的信息（备注、与会者、日期等）。列表中最后一个“互动程序”图标始终是一个空白互动程序，标题为“添加演示文稿”，用户可以单击该图标为项目添加新演示文稿，并且它将在现有互动程序下显示表单的空白副
<form method="POST" enctype="multipart/form-data" data-vat-status="{{project.vat_status}}" data-view-url="{% url 'projects:concept_save_ajax_2' project.id %}" class="autosave_form formset full-width" action="{% url 'projects:upload_budget_pdfs' project.id %}">
{% csrf_token %}
<div id="presentations" class="app-wrap center-apps middle">
{% with get|apps:'Budgets' as costing_app %}
{% for presentation in presentations %}
<div id="presentation-{{presentation.id}}" class="app sm {% if presentation.current_marker %}{{costing_app.color}}{% else %}{{app.color}}{% endif %}">
<a href="" class="filler"></a>
<a class="show-presentation bottom-right" name="presentation-{{presentation.id}}"><img class="icon" src="{% static 'img/edit-white.png' %}"></a>
<ul class="flush">
<li class=""><h2 class="p-t-lg">Presentation {{forloop.counter}}</h2></li>
<li>{{presentation.presentation_date|date:"d M y"|xor}}</li>
<li>{{presentation.details|xor|truncatechars:50}}</li>
{% if presentation.current_marker %}<li>({% if project.deposit_received%}Deposit{% else %}Current{% endif %} budget)</li>{% endif %}
</ul>
</div>
{% if forloop.last %}
{% endif %}
{% endfor %}
{# Add a new presentation #}
<div id="presentation-new" class="app sm {{costing_app.color}} outline">
<a id="new_presentation" data-view-url="{% url 'projects:save_new_presentation' project.id %}" class="filler show-presentation" name="presentation-new"></a>
<a name="presentation-new"></a>
<span class="big-head">+</span>
<h2 class="no-m">Add presentation</h2></li>
</div>
{% endwith %}
</div>
<div class="middle">
{{presentation_formset.management_form}}
{{drawing_formset.management_form}}
<div class="col-9 centered-block p-t-lg">
<table class="left fixed text-sm slim">
{# New presentation without budget #}
<tbody>
</tbody>
{# Edit presentation details #}
{% for presentation_form in presentation_formset %}
<tbody id="pres{{forloop.counter}}" class="presentation-form" name="presentation-{{presentation_form.instance.id|xor:'new'}}" style="display: none;">
{% if not forloop.last and presentation_form.instance.budget_items.count %}
<tr class="split-rows">
<td colspan="3">Exc VAT {% if not presentation_form.instance.current_marker %}{{presentation_form.instance.grand_total_exc_vat|money:'£'}}{% else %}{{project.budget_overview.updated_exc_vat|money:'£'}}{% endif %}</td>
<td colspan="3">Inc VAT {% if not presentation_form.instance.current_marker %}{{presentation_form.instance.grand_total_inc_vat|money:'£'}}{% else %}{{project.budget_overview.updated_inc_vat|money:'£'}}{% endif %}</td>
</tr>
{% endif %}
<tr>
{% for hidden in presentation_form.hidden_fields %}
<td class="hidden">{{ hidden }}</td>
{% endfor %}
</tr>
{% for field in presentation_form.visible_fields %}
<tr class="split-rows">
{% if not field.name == 'pdf_package_dep' %}
<td colspan="6"><label>{{field.label}}</label></td>
{% endif %}
</tr>
<tr class="split-rows">
<td colspan="6">
{% if not field.name == 'pdf_package_dep' %}
{% if field.name == 'presentation_date' %}
{% with presentation_form.instance.meeting as meeting %}
{% include "projects/includes/meeting_bit.html" with employee=request.user.employee meeting=meeting UID=presentation_form.instance.id %}
{% endwith %}
{# <a class="ical_trigger button" data-view-url="{% url 'events:add_to_cal' %}" {% if not field.value %}style="display:none"{% endif %}>Add to calendar</a> #}
{% else %}
{{field}}
{% endif %}
{% endif %}
</td>
</tr>
{% endfor %}
{% if presentation_form.instance.id %}
{# PDF uploads #}
{% with drawing_form=drawing_formset|getval:forloop.counter0 %}
{# budget_pdf_form=budget_pdf_formset|getval:forloop.counter0 #}
<tr>
{% if not forloop.last %}
<td colspan="3"><label>Budget PDF package</label></td>
{% endif %}
<td colspan="3"><label>Drawings</label></td>
</tr>
<tr>
{% if not forloop.last %}
<td colspan="3" class="center">
{% if presentation_form.instance.pdf_package_dep %}
<a class="button file-download pdf" href="{% url 'costing:pdf_open' presentation_form.instance.id %}?pdf=package_dep" target="_blank"></a><a class="pdf-clear" data-view-url="{% url 'costing:pdf_clear' presentation_form.instance.id %}?pdf=package_dep"><img class="icon m-l-sm m-b-md" src="{% static "img/bin.png" %}"></a>
{% else %}
{{presentation_form.pdf_package_dep}}
{% endif %}
</td>
{% endif %}
{% for d_field in drawing_form.visible_fields %}
{% if drawing_form.instance.pdf %}
<td colspan="3" class="center">
<a class="button file-download pdf" href="{% url 'costing:pdf_open' presentation_form.instance.id %}?pdf=drawings" target="_blank"></a><a class="pdf-clear" data-view-url="{% url 'costing:pdf_clear' presentation_form.instance.id %}?pdf=drawings"><img class="icon m-l-sm m-b-md" src="{% static "img/bin.png" %}"></a>
<!--ERF(27/01/2017 @ 1135) Need a hidden field to actually hold the file that's uploaded to the form -->
<input type="hidden" name = "conceptDrawing" value="{{d_field.title}}">
<!--ERF(27/01/2017) Need to include the formset in the template -->
{#{ drawing_formset.as_table }#}
{{drawing_form.as_table}}
{{ drawing_formset.management_form }}
</td>
{% else %}
<td colspan="3">{{d_field}}</td>
{% for d_hidden in drawing_form.hidden_fields %}
<td class="hidden">{{d_hidden}}</td>
{% endfor %}
{% endif %}
{% endfor %}
<tr>
<td colspan="1" class="p-t-md"></td>
<td colspan="4" class="p-t-md"><input type="submit" value="upload"></td>
<td colspan="1" class="p-t-md"></td>
</tr>
</tr>
{% endwith %}
{% endif %}
<tr>
<td colspan="3">
<a class="button email_trigger m-t-md" style="width:auto;" data-view-url="{% url 'comms:open_email_template' project.id %}?template=6&budget={{presentation_form.instance.id}}">Email client meeting report</a>
</td>
</tr>
<tr>
<td class="p-t-md">
<a {% if forloop.last %}id="refresh_presentations"{% endif %}class="update_presentation button fill">Done</a>
</td>
<td colspan="2">
{% if presentation_form.instance.id and not presentation_form.instance.budget_items.count %}
<a class="button fill" href="{% url 'costing:delete_presentation' presentation_form.instance.id %}">Delete</a>
{% endif %}
</td>
</tr>
</tbody>
{% endfor %}
</table>
</div>
</div>
</form>
{% with drawing_form=drawing_formset|getval:forloop.counter0 %}
{# budget_pdf_form=budget_pdf_formset|getval:forloop.counter0 #}
<tr>
{% if not forloop.last %}
<td colspan="3"><label>Budget PDF package</label></td>
{% endif %}
<td colspan="3"><label>Drawings</label></td>
</tr>
<tr>
{% if not forloop.last %}
<td colspan="3" class="center">
{% if presentation_form.instance.pdf_package_dep %}
<a class="button file-download pdf" href="{% url 'costing:pdf_open' presentation_form.instance.id %}?pdf=package_dep" target="_blank"></a><a class="pdf-clear" data-view-url="{% url 'costing:pdf_clear' presentation_form.instance.id %}?pdf=package_dep"><img class="icon m-l-sm m-b-md" src="{% static "img/bin.png" %}"></a>
{% else %}
{{presentation_form.pdf_package_dep}}
{% endif %}
</td>
{% endif %}
{% for d_field in drawing_form.visible_fields %}
{% if drawing_form.instance.pdf %}
<td colspan="3" class="center">
<a class="button file-download pdf" href="{% url 'costing:pdf_open' presentation_form.instance.id %}?pdf=drawings" target="_blank"></a><a class="pdf-clear" data-view-url="{% url 'costing:pdf_clear' presentation_form.instance.id %}?pdf=drawings"><img class="icon m-l-sm m-b-md" src="{% static "img/bin.png" %}"></a>
<input type="hidden" name = "conceptDrawing" value="{{d_field.title}}">
{#{ drawing_formset.as_table }#}
{{drawing_form.as_table}}
{{ drawing_formset.management_form }}
</td>
{% else %}
<td colspan="3">{{d_field}}</td>
{% for d_hidden in drawing_form.hidden_fields %}
<td class="hidden">{{d_hidden}}</td>
{% endfor %}
{% endif %}
{% endfor %}
<tr>
<td colspan="1" class="p-t-md"></td>
<td colspan="4" class="p-t-md"><input type="submit" value="upload"></td>
<td colspan="1" class="p-t-md"></td>
</tr>
</tr>
{% endwith %}
作为HTML这一部分顶部的
{%with…%}与两个不同的参数同时使用…？这可能吗？您可以进行一些测试。尝试修改您的表单集..使用1个额外表单和0个额外表单，看看会发生什么
{% with drawing_form=drawing_formset|getval:forloop.counter0 %}
{# budget_pdf_form=budget_pdf_formset|getval:forloop.counter0 #}
<tr>
{% if not forloop.last %}
<td colspan="3"><label>Budget PDF package</label></td>
{% endif %}
<td colspan="3"><label>Drawings</label></td>
</tr>
<tr>
{% if not forloop.last %}
<td colspan="3" class="center">
{% if presentation_form.instance.pdf_package_dep %}
<a class="button file-download pdf" href="{% url 'costing:pdf_open' presentation_form.instance.id %}?pdf=package_dep" target="_blank"></a><a class="pdf-clear" data-view-url="{% url 'costing:pdf_clear' presentation_form.instance.id %}?pdf=package_dep"><img class="icon m-l-sm m-b-md" src="{% static "img/bin.png" %}"></a>
{% else %}
{{presentation_form.pdf_package_dep}}
{% endif %}
</td>
{% endif %}
{% for d_field in drawing_form.visible_fields %}
{% if drawing_form.instance.pdf %}
<td colspan="3" class="center">
<a class="button file-download pdf" href="{% url 'costing:pdf_open' presentation_form.instance.id %}?pdf=drawings" target="_blank"></a><a class="pdf-clear" data-view-url="{% url 'costing:pdf_clear' presentation_form.instance.id %}?pdf=drawings"><img class="icon m-l-sm m-b-md" src="{% static "img/bin.png" %}"></a>
<input type="hidden" name = "conceptDrawing" value="{{d_field.title}}">
{#{ drawing_formset.as_table }#}
{{drawing_form.as_table}}
{{ drawing_formset.management_form }}
</td>
{% else %}
<td colspan="3">{{d_field}}</td>
{% for d_hidden in drawing_form.hidden_fields %}
<td class="hidden">{{d_hidden}}</td>
{% endfor %}
{% endif %}
{% endfor %}
<tr>
<td colspan="1" class="p-t-md"></td>
<td colspan="4" class="p-t-md"><input type="submit" value="upload"></td>
<td colspan="1" class="p-t-md"></td>
</tr>
</tr>
{% endwith %}
{# budget_pdf_form=budget_pdf_formset|getval:forloop.counter0 #}