add collection export feature

templates/components/filter-form.html

@@ -112,6 +112,18 @@
                   <input type="submit" class="button small primary expanded" id="add_to_collection" value="Add to Collection">
                 </div>
             </form>
+            <form id="export_collection_form" data-abide method="post" action="/api/export_roi_list">
+                {% csrf_token %}
+                <label>Export Collection:</label>
+                <div>
+                    <select name="collection" style="width:100%">
+                        {% for collection in collections %}
+                        <option value="{{ collection.name }}">{{ collection.name }}</option>
+                        {% endfor %}
+                    </select>
+                <input type="submit" class="button small primary expanded" id="export_collection" value="Export Collection">
+                </div>
+            </form>
             {% else %}
               To annotate images, please <a href="{% url 'manage:login' %}">login</a>.
             {% endif %}

web/urls.py

@@ -8,6 +8,7 @@
     path('api/roi_annotations', views.roi_annotations, name='annotations'),
     path('api/create_label', views.create_label, name='create_label'),
     path('api/roi_list', views.roi_list, name='roi_list'),
+    path('api/export_roi_list', views.export_roi_list, name='export_roi_list'),
     path('api/create_or_verify_annotations', views.create_or_verify_annotations, name='create_or_verify_annotations'),
     path('api/move_or_copy_to_collection', views.move_or_copy_to_collection, name='move_or_copy_to_collection'),
     path('api/get_labels', views.get_labels, name='get_labels'),

web/views.py

@@ -1,7 +1,10 @@
+import csv
+import os
+from pprint import pprint
 import json
 
 from django.contrib.auth.models import User
-from django.http import JsonResponse, HttpResponseBadRequest, HttpResponse
+from django.http import JsonResponse, HttpResponseBadRequest, HttpResponse, HttpResponseForbidden
 from django.shortcuts import render, get_object_or_404
 from django.views.decorators.csrf import csrf_exempt
 from django.views.decorators.http import require_POST
@@ -35,6 +38,36 @@ def index(request):
     'ROI_ID_DESC': ['-roi_id'],
 }
 
+def export_roi_list(request):
+    if not request.user.is_authenticated:
+        return HttpResponseForbidden()
+
+    collection = request.POST.get('collection')
+    if not collection:
+        return HttpResponseBadRequest()
+
+    rois = ROI.objects \
+        .filter(collections__name=collection) \
+        .order_by("roi_id") \
+        .values_list('collections__name', 'winning_annotation__label__name', 'path')
+
+    response = HttpResponse(
+        content_type="text/csv",
+        headers={"Content-Disposition": f'attachment; filename="{collection}-rois.csv"'},
+    )
+
+    writer = csv.writer(response)
+    writer.writerow(["Collection", "Label", "Filename", "Path"])
+    for roi in rois:
+        writer.writerow([
+            roi[0],
+            roi[1],
+            os.path.basename(roi[2]),
+            os.path.dirname(roi[2]),
+        ])
+
+    return response
+
 @require_POST
 def roi_list(request):
     requested_label = request.POST.get('label')