This is my view:
from django.conf import settings from django.http import HttpResponse from django.template.loader import render_to_string import weasyprint @staff_member_required def admin_order_pdf(request, order_id): order = get_object_or_404(Order, id=order_id) html = render_to_string('orders/order/pdf.html', {'order': order}) response = HttpResponse(content_type='application/pdf') response['Content-Disposition'] = 'filename="order_{}.pdf"'.format(order.id) weasyprint.HTML(string=html).write_pdf(response, stylesheets=[weasyprint.CSS(settings.STATIC_ROOT + 'css/pdf.css')]) return response
when i want to import (import weasyprint) it gives me a error.
ERROR: Request Method: GET Request URL: http://127.0.0.1:8000/admin/orders/order/ Django Version: 1.8.6 Exception Type: OSError Exception Value: dlopen() failed to load a library: cairo / cairo-2
I already installed weasyprint and cairocffi. I'm using osx EI CAPITAN.
This was solved for me by installing the following dependencies on Ubuntu:
sudo apt-get install libpango1.0-0 sudo apt-get install libcairo2 sudo apt-get install libpq-dev
Check out the dependencies at the link:
http://weasyprint.readthedocs.io/en/latest/install.html
I also had the same issue on fresh installation of weasyprint on OSX EL CAPITAN. This is how I solved it.
Firstly, cairo was not found by when installed via pip, so I tried installing it via homebrew using the following command
brew install cairo pango gdk-pixbuf libxml2 libxslt libffi
Once this is done, I tried to find out the path of cairo installation. For my case, the location was /usr/local/homebrew/Cellar/cairo/1.14.6_1/lib/ I just exported this to my DYLD library path
export DYLD_LIBRARY_PATH=/usr/local/homebrew/Cellar/cairo/1.14.6_1/lib/
Then I uninstalled and installed weasyprint again
pip uninstall weasyprint pip install weasyprint
Post that, I tried to run weasyprint, but got a new error
Traceback (most recent call last): File "/Users/anurag/VirtualEnvs/test/bin/weasyprint", line 11, in <module> load_entry_point('WeasyPrint==0.31', 'console_scripts', 'weasyprint')() File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/pkg_resources/__init__.py", line 565, in load_entry_point return get_distribution(dist).load_entry_point(group, name) File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2598, in load_entry_point return ep.load() File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2258, in load return self.resolve() File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2264, in resolve module = __import__(self.module_name, fromlist=['__name__'], level=0) File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/weasyprint/__init__.py", line 338, in <module> from .css import PARSER, preprocess_stylesheet # noqa File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/weasyprint/css/__init__.py", line 30, in <module> from . import computed_values File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/weasyprint/css/computed_values.py", line 18, in <module> from .. import text File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/weasyprint/text.py", line 216, in <module> 'libgobject-2.0.dylib') File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/weasyprint/text.py", line 212, in dlopen return ffi.dlopen(names[0]) # pragma: no cover File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/cffi/api.py", line 139, in dlopen lib, function_cache = _make_ffi_library(self, name, flags) File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/cffi/api.py", line 770, in _make_ffi_library backendlib = _load_backend_lib(backend, libname, flags) File "/Users/anurag/VirtualEnvs/test/lib/python2.7/site-packages/cffi/api.py", line 759, in _load_backend_lib return backend.load_library(name, flags) OSError: cannot load library gobject-2.0: dlopen(gobject-2.0, 2): image not found
I tried to find out the location of object library. Found it in /opt/local/lib and set the fallback library path
export DYLD_FALLBACK_LIBRARY_PATH=/opt/local/lib
After that, I tried running weasyprint again and it worked
(test)anurag-mac:~ anurag$ weasyprint --version WeasyPrint version 0.31
I hope someone else also find it useful.
UPDATE-1
Although the above method worked, mysql python started giving error because of this and culprit was defining fallback library path. So I removed this line
export DYLD_FALLBACK_LIBRARY_PATH=/opt/local/lib
which gave me the gobject error again, then I tried finding the location of its installation and appended to the DYLD_LIBRARY_PATH
export DYLD_LIBRARY_PATH=/usr/local/homebrew/Cellar/cairo/1.14.6_1/lib/:/usr/local/homebrew/Cellar/glib/2.48.2/lib/
After doing that, I got similar error for pango. After correcting all the errors, this is the final library path which worked
export DYLD_LIBRARY_PATH=/usr/local/homebrew/Cellar/cairo/1.14.6_1/lib/:/usr/local/homebrew/Cellar/glib/2.48.2/lib/:/usr/local/homebrew/Cellar/pango/1.40.3/lib/
