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Using Symfony2, DQL and knplabs/knp-paginator-bundle – how to get around “Cannot count query which selects two FROM components, cannot make distinction”

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The Community Leadership Summit 2013 brings together community leaders, organizers and managers and the projects and organizations that are interested in growing and empowering a strong community. The event pulls together the leading minds in community management, relations and online collaboration to discuss, debate and continue to refine the art of building an effective and capable community.

This year the event takes place on 20th – 21st July 2013 (the weekend before OSCON) in Portland, Oregon and is the fifth anniversary of the event and I am determined to make it bigger, better, and more valuable than ever. Over the previous four events CLS has become the primary annual meeting place for community leadership, and every year we get an absolutely wonderful and diverse attendance spanning technology, education, government, science and more.

At the heart of Community Leadership Summit 2013 is an open unconference-style event in which everyone who attends is welcome to lead and contribute sessions on any topic that is relevant. These sessions are very much discussion sessions: the participants can interact directly, offer thoughts and experience, and share ideas and questions. These unconference sessions are also augmented with a series of presentations from leaders in the field, panel debates and networking opportunities.

I am currently getting the wheels in motion for the sponsorship for CLS13 and I just wanted to invite any organizations reading this who might be interested in sponsoring the event. CLS is not a particularly expensive event to put on, but I want to expand the usual sponsorship this year to add a little more polish than usual to the event. As such, I am looking for companies or might be interested in supporting the event and getting exposure to community leaders across a range of industries, but with a strong focus on technology.

One of the messages I emphasize in my opening plenary is that the sponsors of the event don’t buy editorial direction or influence (as the event is very focused on being free, open, and attendee-content driven), and as such sponsorship of CLS is very much an affirmation of support of the event for the right reasons. As such, association with CLS as a sponsor has typically reflected very well on those companies who have sponsored in the past. Such companies have included Intel, Microsoft, Black Duck, Oracle, O’Reilly, OpenNMS, and others.

If you are interested in supporting CLS, please drop me an email to jono@jonobacon.org. Thanks!

Example user ‘iain’

sudo mkdir -p /chroot/iain/home/iain
sudo useradd -M -d /home/iain iain
sudo passwd iain
sudo chwon iain: /chroot/iain/home/iain

sudo nano -w /etc/ssh/sshd_config
# At the end of the file, add:

Match User paypoint
    ChrootDirectory /chroot/iain
    AllowTCPForwarding no
    X11Forwarding no
    ForceCommand internal-sftp

sudo /etc/init.d/ssh restart

I had a need to add ACL rules to entities at the repository level.

My biggest struggle was getting dependancy injection working.

This is what I finally came up with after a fresh mind and an instant coffee: