change pymupdf to pypdf

fet2020/finance/utils.py

@@ -2,8 +2,8 @@ import datetime
 import io
 import os
 
-import fitz
 from django.core.files import File
+from pypdf import PdfReader, PdfWriter
 
 from .models import Bill, Wiref
 
@@ -12,6 +12,7 @@ def generate_pdf(wiref):
     if wiref is not None and wiref.status == Wiref.Status.OPENED:
         bills = Bill.objects.filter(wiref=wiref).order_by("date")
 
+        # get data for pdf
         data = {}
         for count, elem in enumerate(bills):
             data.update(
@@ -45,7 +46,23 @@ def generate_pdf(wiref):
             }
         )
 
+        # write data in pdf
         pdf_path = os.path.join(os.path.dirname(__file__), "static/Vorlage.pdf")
+        reader = PdfReader(pdf_path)
+        writer = PdfWriter()
+        writer.append(reader)
+
+        writer.update_page_form_field_values(
+            writer.pages[0],
+            data,
+        )
+
+        with io.BytesIO() as bytes_stream:
+            writer.write(bytes_stream)
+
+            wiref_name = f"Abrechnungsformular-{wiref.wiref_id}.pdf"
+            wiref.file_field.save(wiref_name, File(bytes_stream, wiref_name))
+        '''
         with fitz.open(pdf_path) as doc:
             for page in doc:
                 widgets = page.widgets()
@@ -88,6 +105,7 @@ def generate_pdf(wiref):
             dist = doc.tobytes()
             wiref_name = f"{wiref.wiref_id}.pdf"
             wiref.file_field.save(wiref_name, File(io.BytesIO(dist), wiref_name))
+        '''
 
         return True