Compatibility with Redmine 5 (#25)

[felmab]

Applied most of the changes suggested by @HarrySky in #25.

Beware I am not a Ruby developer!

[HarrySky]

Beware I am not a Ruby developer!

Same here 😄 that's why I did not create the PR, because I am not even sure that plugin works on Redmine 5.x (I don't use it at the moment), Redmine just refused to work properly until I applied those changes to plugin

[felmab]

Also, I realized yesterday that the "listen" gem needs to be added as a dependency, but I do not know how this is supposed to be done.

[vsc55]

Hi @felmab,
An error occurs with your pr::

 # bundle exec rake db:migrate RAILS_ENV=production
rake aborted!
NameError: uninitialized class variable @@schemes in URI
Did you mean?  scheme_list
/opt/redmine/redmine-5.0-stable/plugins/redmine_git_mirror/lib/redmine_git_mirror/url.rb:8:in `<module:URI>'
/opt/redmine/redmine-5.0-stable/plugins/redmine_git_mirror/lib/redmine_git_mirror/url.rb:4:in `<top (required)>'
/opt/redmine/redmine-5.0-stable/plugins/redmine_git_mirror/init.rb:4:in `<top (required)>'
/opt/redmine/redmine-5.0-stable/lib/redmine/plugin_loader.rb:31:in `load'
/opt/redmine/redmine-5.0-stable/lib/redmine/plugin_loader.rb:31:in `run_initializer'
/opt/redmine/redmine-5.0-stable/lib/redmine/plugin_loader.rb:108:in `each'
/opt/redmine/redmine-5.0-stable/lib/redmine/plugin_loader.rb:108:in `block in load'
/opt/redmine/redmine-5.0-stable/config/environment.rb:16:in `<top (required)>'
/usr/bin/bundle:9:in `load'
/usr/bin/bundle:9:in `<main>'
Tasks: TOP => db:migrate => db:load_config => environment
(See full trace by running task with --trace)

Fix:
In file redmine_git_mirror/lib/redmine_git_mirror/url.rb you need to replace @@schemes['GIT'] = GIT with register_scheme 'GIT', GIT

In the same redmine_git_mirror/init.rb file you also need to change require 'redmine_git_mirror/patches/repositories_helper_patch' line to this:
require File.dirname(__FILE__) + '/lib/redmine_git_mirror/patches/repositories_helper_patch'

Source: #25

[felmab]

As I said, I am no Ruby developer. I tried to provide something the best I could. Since you seem to be more knowledgeable than I am, you might want to provide an amended version of this PR ^^

[L-H-1995]

I have forked your repository and done further changes so that it works now completly fine with redmine 5. The changes aren't on a high programming level cause I'm not a ruby programmer but they fixed the issues with the new Rails-Version.

Fixed Redmine-Git-Mirror