Use xhtml2pdf inplace of reportlab for submission pdf export (#4577)

Fixes #4255

Author: sandeepsajan0

hypha/apply/funds/models/mixins.py

@@ -385,3 +385,20 @@ def get_answer_from_label(self, label):
                     if answer and not answer == "N":
                         return answer
         return None
+
+    def get_text_questions_answers_as_dict(self):
+        data_dict = {}
+        for field_id in self.question_text_field_ids:
+            if field_id not in self.named_blocks:
+                question_field = self.serialize(field_id)
+                if isinstance(question_field["answer"], str):
+                    answer = question_field["answer"]
+                else:
+                    answer = ",".join(question_field["answer"])
+                if answer and not answer == "None":
+                    data_dict[question_field["question"]] = answer
+                elif question_field["type"] == "checkbox":
+                    data_dict[question_field["question"]] = False
+                else:
+                    data_dict[question_field["question"]] = "-"
+        return data_dict

hypha/apply/funds/templates/funds/submission-pdf.html

@@ -0,0 +1,15 @@
+{% extends "base-pdf.html" %}
+{% load i18n %}
+
+{% block content %}
+    <h2 style="margin-bottom: 0;">{{ title }}  <a href="{{ link }}">(#{{ id }})</a></h2>
+    <p style="margin-top:0; margin-bottom:8px; border-bottom: 1px solid lightgray;">{{ stage }} : {{ fund }} : {{ round }} : {{ lead }}</p>
+
+    <div style="font-size:14px;">
+        {% for question, answer in data.items %}
+            <p><b>{{ question }}</b></p>
+            <p> {{ answer }}</p>
+        {% endfor %}
+    </div>
+
+{% endblock %}

hypha/apply/funds/views/submission_detail.py

@@ -1,15 +1,17 @@
 from django.conf import settings
 from django.core.exceptions import PermissionDenied
 from django.http import (
-    FileResponse,
     Http404,
     HttpRequest,
     HttpResponse,
     HttpResponseRedirect,
 )
 from django.shortcuts import redirect
+from django.templatetags.static import static
 from django.urls import reverse_lazy
+from django.utils import timezone
 from django.utils.decorators import method_decorator
+from django.utils.text import slugify
 from django.views import View
 from django.views.generic import (
     DetailView,
@@ -22,10 +24,11 @@
     staff_required,
 )
 from hypha.apply.utils.models import PDFPageSettings
-from hypha.apply.utils.pdfs import draw_submission_content, make_pdf
+from hypha.apply.utils.pdfs import render_as_pdf
 from hypha.apply.utils.views import (
     ViewDispatcher,
 )
+from hypha.core.models import SystemSettings
 
 from ..models import (
     ApplicationSubmission,
@@ -287,28 +290,40 @@ def should_redirect(cls, request, submission):
 class SubmissionDetailPDFView(SingleObjectMixin, View):
     model = ApplicationSubmission
 
+    def get_slugified_file_name(self, export_type):
+        return f"{timezone.localdate().strftime('%Y%m%d')}-{slugify(self.object.title)}.{export_type}"
+
     def get(self, request, *args, **kwargs):
         self.object = self.get_object()
         pdf_page_settings = PDFPageSettings.load(request_or_site=request)
-        content = draw_submission_content(self.object.output_text_answers())
-        pdf = make_pdf(
-            title=self.object.title,
-            sections=[
-                {
-                    "content": content,
-                    "title": "Submission",
-                    "meta": [
-                        self.object.stage,
-                        self.object.page,
-                        self.object.round,
-                        f"Lead: {self.object.lead}",
-                    ],
-                },
-            ],
-            pagesize=pdf_page_settings.download_page_size,
+        context = {}
+        context["pagesize"] = pdf_page_settings.download_page_size
+        context["show_footer"] = True
+        site_settings = SystemSettings.objects.first()
+        if site_settings:
+            if site_settings.site_logo_default:
+                context["logo"] = request.build_absolute_uri(
+                    site_settings.site_logo_default.file.url
+                )
+            else:
+                context["logo"] = request.build_absolute_uri(static("images/logo.png"))
+
+        context["link"] = self.request.build_absolute_uri(
+            self.object.get_absolute_url()
         )
-        return FileResponse(
-            pdf,
-            as_attachment=True,
-            filename=self.object.title + ".pdf",
+        context["id"] = self.object.application_id
+        context["data"] = self.object.get_text_questions_answers_as_dict()
+        context["title"] = self.object.title
+        context["stage"] = self.object.stage
+        context["fund"] = self.object.page
+        context["round"] = self.object.round
+        context["lead"] = self.object.lead
+        context["show_header"] = True
+        context["header_title"] = "Submission details"
+        template_path = "funds/submission-pdf.html"
+        return render_as_pdf(
+            request=request,
+            template_name=template_path,
+            context=context,
+            filename=self.get_slugified_file_name("pdf"),
         )