{"html_url": "https://github.com/simonw/datasette/issues/1310#issuecomment-829885904", "issue_url": "https://api.github.com/repos/simonw/datasette/issues/1310", "id": 829885904, "node_id": "MDEyOklzc3VlQ29tbWVudDgyOTg4NTkwNA==", "user": {"value": 3747136, "label": "ColinMaudry"}, "created_at": "2021-04-30T06:58:46Z", "updated_at": "2021-04-30T07:26:11Z", "author_association": "NONE", "body": "I made it work with openpyxl. I'm not sure all the code under `@hookimpl` is necessary... but it works :)\r\n\r\n```python\r\nfrom datasette import hookimpl\r\nfrom datasette.utils.asgi import Response\r\nfrom openpyxl import Workbook\r\nfrom openpyxl.writer.excel import save_virtual_workbook\r\nfrom openpyxl.cell import WriteOnlyCell\r\nfrom openpyxl.styles import Alignment, Font, PatternFill\r\nfrom tempfile import NamedTemporaryFile\r\n\r\ndef render_spreadsheet(rows):\r\n    wb = Workbook(write_only=True)\r\n    ws = wb.create_sheet()\r\n    ws = wb.active\r\n    ws.title = \"decp\"\r\n\r\n    columns = rows[0].keys()\r\n    headers = []\r\n    for col in columns :\r\n        c = WriteOnlyCell(ws, col)\r\n        c.fill = PatternFill(\"solid\", fgColor=\"DDEFFF\")\r\n        headers.append(c)\r\n    ws.append(headers)\r\n\r\n    for row in rows:\r\n        wsRow = []\r\n        for col in columns:\r\n            c = WriteOnlyCell(ws, row[col])\r\n            if col == \"objet\" :\r\n                c.alignment = Alignment(wrapText = True)\r\n            wsRow.append(c)\r\n        ws.append(wsRow)\r\n\r\n    with NamedTemporaryFile() as tmp:\r\n        wb.save(tmp.name)\r\n        tmp.seek(0)\r\n        return Response(\r\n            tmp.read(),\r\n            headers={\r\n                'Content-Disposition': 'attachment; filename=decp.xlsx',\r\n                'Content-type': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'\r\n            }\r\n        )\r\n\r\n@hookimpl\r\ndef register_output_renderer():\r\n    return {\"extension\": \"xlsx\",\r\n    \"render\": render_spreadsheet,\r\n    \"can_render\": lambda: False}\r\n\r\n```\r\n\r\nThe key part was to find the right function to wrap the spreadsheet object `wb`. `NamedTemporaryFile()` did it!\r\n\r\nI'll update this issue when the plugin is packaged and ready for broader use.", "reactions": "{\"total_count\": 1, \"+1\": 0, \"-1\": 0, \"laugh\": 0, \"hooray\": 1, \"confused\": 0, \"heart\": 0, \"rocket\": 0, \"eyes\": 0}", "issue": {"value": 870125126, "label": "I'm creating a plugin to export a spreadsheet file (.ods or .xlsx)"}, "performed_via_github_app": null}
{"html_url": "https://github.com/simonw/datasette/issues/1310#issuecomment-828670621", "issue_url": "https://api.github.com/repos/simonw/datasette/issues/1310", "id": 828670621, "node_id": "MDEyOklzc3VlQ29tbWVudDgyODY3MDYyMQ==", "user": {"value": 3747136, "label": "ColinMaudry"}, "created_at": "2021-04-28T18:12:08Z", "updated_at": "2021-04-28T18:12:08Z", "author_association": "NONE", "body": "Apparently, beside a string, Reponse could also [work with bytes](https://github.com/simonw/datasette/blob/master/datasette/utils/asgi.py#L338).", "reactions": "{\"total_count\": 0, \"+1\": 0, \"-1\": 0, \"laugh\": 0, \"hooray\": 0, \"confused\": 0, \"heart\": 0, \"rocket\": 0, \"eyes\": 0}", "issue": {"value": 870125126, "label": "I'm creating a plugin to export a spreadsheet file (.ods or .xlsx)"}, "performed_via_github_app": null}