Started implementation of multi-step form for purchase order file uplod

InvenTree/order/templates/order/po_navbar.html

@@ -14,6 +14,12 @@
             {% trans "Details" %}
         </a>
     </li>
+    <li class='list-group-item {% if tab == "upload" %}active{% endif %}' title='{% trans "Upload File" %}'>
+        <a href='{% url "po-upload" order.id %}'>
+            <span class='fas fa-file-upload'></span>
+            {% trans "Upload File" %}
+        </a>
+    </li>
     <li class='list-group-item {% if tab == "received" %}active{% endif %}' title='{% trans "Received Stock Items" %}'>
         <a href='{% url "po-received" order.id %}'>
             <span class='fas fa-sign-in-alt'></span>

InvenTree/order/templates/order/po_upload.html

@@ -0,0 +1,42 @@
+{% extends "order/order_base.html" %}
+
+{% load inventree_extras %}
+{% load i18n %}
+{% load static %}
+
+{% block menubar %}
+{% include 'order/po_navbar.html' with tab='upload' %}
+{% endblock %}
+
+{% block heading %}
+{{ wizard.form.media }}
+{% endblock %}
+
+{% block details %}
+
+<p>Step {{ wizard.steps.step1 }} of {{ wizard.steps.count }}</p>
+<form action="" method="post">{% csrf_token %}
+<table>
+{{ wizard.management_form }}
+{% if wizard.form.forms %}
+    {{ wizard.form.management_form }}
+    {% for form in wizard.form.forms %}
+        {{ form }}
+    {% endfor %}
+{% else %}
+    {{ wizard.form }}
+{% endif %}
+</table>
+{% if wizard.steps.prev %}
+<button name="wizard_goto_step" type="submit" value="{{ wizard.steps.first }}">{% trans "first step" %}</button>
+<button name="wizard_goto_step" type="submit" value="{{ wizard.steps.prev }}">{% trans "prev step" %}</button>
+{% endif %}
+<input type="submit" value="{% trans "submit" %}"/>
+</form>
+
+{% endblock %}
+
+{% block js_ready %}
+{{ block.super }}
+
+{% endblock %}

InvenTree/order/urls.py

@@ -17,6 +17,7 @@ purchase_order_detail_urls = [
     url(r'^receive/', views.PurchaseOrderReceive.as_view(), name='po-receive'),
     url(r'^complete/', views.PurchaseOrderComplete.as_view(), name='po-complete'),
 
+    url(r'^upload/', views.PurchaseOrderUpload.as_view(), name='po-upload'),
     url(r'^export/', views.PurchaseOrderExport.as_view(), name='po-export'),
 
     url(r'^notes/', views.PurchaseOrderNotes.as_view(), name='po-notes'),

InvenTree/order/views.py

@@ -9,6 +9,7 @@ from django.db import transaction
 from django.shortcuts import get_object_or_404
 from django.core.exceptions import ValidationError
 from django.urls import reverse
+from django.http import HttpResponseRedirect
 from django.utils.translation import ugettext_lazy as _
 from django.views.generic import DetailView, ListView, UpdateView
 from django.views.generic.edit import FormMixin
@@ -27,6 +28,7 @@ from stock.models import StockItem, StockLocation
 from part.models import Part
 
 from common.models import InvenTreeSetting
+from common.views import FileUploadWizardView
 
 from . import forms as order_forms
 
@@ -564,6 +566,24 @@ class SalesOrderShip(AjaxUpdateView):
         return self.renderJsonResponse(request, form, data, context)
 
 
+class PurchaseOrderUpload(FileUploadWizardView):
+    ''' Upload File Wizard View '''
+
+    template_name = "order/po_upload.html"
+
+    def get_context_data(self, form, **kwargs):
+        context = super().get_context_data(form=form, **kwargs)
+
+        order = get_object_or_404(PurchaseOrder, pk=self.kwargs['pk'])
+
+        context.update({'order': order})
+
+        return context
+
+    def done(self, form_list, **kwargs):
+        return HttpResponseRedirect(reverse('po-detail', kwargs={'pk': self.kwargs['pk']}))
+
+
 class PurchaseOrderExport(AjaxView):
     """ File download for a purchase order