Flask Pdfkit 从模板创建 pdf 并保存

Question

我使用 pdfkit 创建发票 pdf。目前我只想保存它。稍后我会将发票文件名保存在数据库中并存储在 AWS3 上。

但是现在我在尝试保存文件时遇到了 IO 错误，可能是因为我以错误的方式请求它：

pdfkit.from_file(render_template('invoice_template.html', invoice_id=1, invioce_date_start=str(date.today()),
                                     invioce_date_end=str(date.today()), invioce_company_name=form.zahlung_firma.data, invioce_user_vorename=form.vorname.data,
                                     invioce_user_surname=form.nachname.data, invioce_user_email=current_user.email), str(current_user.id) + '-invoice.pdf')

错误：

    Traceback (most recent call last):
  File "C:\Python27\lib\site-packages\flask\app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "C:\Python27\lib\site-packages\flask\app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "C:\Python27\lib\site-packages\flask\app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "C:\Python27\lib\site-packages\flask\app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "C:\Python27\lib\site-packages\flask\app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "C:\Python27\lib\site-packages\flask_login.py", line 758, in decorated_view
    return func(*args, **kwargs)
  File "C:\Users\User\Eclipse-Workspace\Monteurzimmer\main.py", line 114, in decorated_function
    return func(*args, **kwargs)
  File "C:\Users\User\Eclipse-Workspace\Monteurzimmer\main.py", line 1252, in logged_in
    invioce_user_surname=form.nachname.data, invioce_user_email=current_user.email), str(current_user.id) + '-invoice.pdf')
  File "C:\Python27\lib\site-packages\pdfkit\api.py", line 47, in from_file
    configuration=configuration, cover_first=cover_first)
  File "C:\Python27\lib\site-packages\pdfkit\pdfkit.py", line 41, in __init__
    self.source = Source(url_or_file, type_)
  File "C:\Python27\lib\site-packages\pdfkit\source.py", line 12, in __init__
    self.checkFiles()
  File "C:\Python27\lib\site-packages\pdfkit\source.py", line 32, in checkFiles
    raise IOError('No such file: %s' % self.source)
IOError: No such file: <!doctype html>

可以找到模板本身 here，我刚刚编辑了 jinja 变量：

Answer 1

pdfkit.from_file() 需要一个文件对象作为它的输入，但是 render_template() returns 一个字符串。请尝试 pdfkit.from_string()。

更多信息：pypi - pdfkit

Flask Pdfkit 从模板创建 pdf 并保存

Flask Pdfkit create pdf from template and save it

python

pdfkit

flask