discourse/lib/discourse.rb

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Ruby
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require 'cache'
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module Discourse
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# When they try to do something they should be logged in for
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class NotLoggedIn < Exception; end
# When the input is somehow bad
class InvalidParameters < Exception; end
# When they don't have permission to do something
class InvalidAccess < Exception; end
# When something they want is not found
class NotFound < Exception; end
def self.cache
@cache ||= Cache.new
end
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# Get the current base URL for the current site
def self.current_hostname
RailsMultisite::ConnectionManagement.current_hostname
end
def self.base_uri default_value=""
if !ActionController::Base.config.relative_url_root.blank?
return ActionController::Base.config.relative_url_root
else
return default_value
end
end
def self.base_url_no_prefix
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protocol = "http"
protocol = "https" if SiteSetting.use_ssl?
if SiteSetting.force_hostname.present?
result = "#{protocol}://#{SiteSetting.force_hostname}"
else
result = "#{protocol}://#{current_hostname}"
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end
result << ":#{SiteSetting.port}" if SiteSetting.port.present? && SiteSetting.port.to_i > 0
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result
end
def self.base_url
return base_url_no_prefix + base_uri
end
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def self.enable_maintenance_mode
$redis.set maintenance_mode_key, 1
true
end
def self.disable_maintenance_mode
$redis.del maintenance_mode_key
true
end
def self.maintenance_mode?
!!$redis.get( maintenance_mode_key )
end
def self.git_version
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return $git_version if $git_version
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f = Rails.root.to_s + "/config/version"
require f if File.exists?("#{f}.rb")
begin
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$git_version ||= `git rev-parse HEAD`.strip
rescue
$git_version = "unknown"
end
end
# Either returns the system_username user or the first admin.
def self.system_user
user = User.where(username_lower: SiteSetting.system_username).first if SiteSetting.system_username.present?
user = User.admins.order(:id).first if user.blank?
user
end
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private
def self.maintenance_mode_key
'maintenance_mode'
end
end