Radio group issue

[ivshe]

Hi,

I am having problems with radio group form fields...
I am unable to check radio option.
The code below works partially - Group1 object value is updated, but radio button remain untouched (not active).
Value on related /Kids object remains untouched...

Please tell me what I'm doing wrong?

Code

from pypdf import PdfReader, PdfWriter
from io import BytesIO

pdf_reader = PdfReader("./doc.pdf")
pdf_writer = PdfWriter()
pdf_writer.append(pdf_reader)

# Update form
total_pages = len(pdf_reader.pages)
for page_idx in range(total_pages):
    pdf_writer.update_page_form_field_values(
        pdf_writer.pages[page_idx],
        {
          Group1: "Choice1"
        }
    )

# Write the filled PDF to a BytesIO stream
output_stream = BytesIO()
pdf_writer.write(output_stream)
output_stream.seek(0)

# Save the filled PDF to a file
with open("./doc-filled.pdf", "wb") as output_file:
    output_file.write(output_stream.getvalue())

[stefan6419846]

Please provide a complete example - the current code uses undefined variables and without a PDF file, providing support is nearly impossible.

[pubpub-zz]

radio buttons values and text are post of the time different. I would recommend to check the possibles values calling get_fields() looking at "/States" entry of the corresponding field

[ivshe]

My apologies, here is updated code and pdf file:

from pypdf import PdfReader, PdfWriter
from io import BytesIO

pdf_reader = PdfReader("./radio.pdf")
pdf_writer = PdfWriter()
pdf_writer.append(pdf_reader)

# Update form
total_pages = len(pdf_reader.pages)
for page_idx in range(total_pages):
    pdf_writer.update_page_form_field_values(
        pdf_writer.pages[page_idx],
        {
          "Group1": "Choice2"
        }
    )

# Write the filled PDF to a BytesIO stream
output_stream = BytesIO()
pdf_writer.write(output_stream)
output_stream.seek(0)

# Save the filled PDF to a file
with open("./radio-filled.pdf", "wb") as output_file:
    output_file.write(output_stream.getvalue())

radio.pdf

I have checked available states and '/Choice2' value is present there, but still there is no checked option in resulting file...

[pubpub-zz]

try replacing "Choice2", by NameObject("/Choice2") (adding from pypdf.generic import NameObject)

[ivshe]

The issue was resolved:

• pdf_writer.update_page_form_field_values should be called with auto_regenerate=False parameter
• radio field value should be set with "/", in my case: "Group1": "/Choice2"

Thank you so much for support and have a nice day!