foodsoft/app/controllers/application_controller.rb

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class ApplicationController < ActionController::Base
protect_from_forgery
before_filter :select_foodcoop, :authenticate, :store_controller, :items_per_page
after_filter :remove_controller
helper_method :current_user
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# Returns the controller handling the current request.
def self.current
Thread.current[:application_controller]
end
# Use this method to call a rake task,,
# e.g. to deliver mails after there are created.
def call_rake(task, options = {})
options[:rails_env] ||= Foodsoft.env
args = options.map { |n, v| "#{n.to_s.upcase}='#{v}'" }
system "/usr/bin/rake #{task} #{args.join(' ')} --trace 2>&1 >> #{Rails.root}/log/rake.log &"
end
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protected
def current_user
# check if there is a valid session and return the logged-in user (its object)
if session[:user_id] and params[:foodcoop]
# for shared-host installations. check if the cookie-subdomain fits to request.
@current_user ||= User.find(session[:user_id]) if params[:foodcoop] == Foodsoft.env
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end
end
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def deny_access
self.return_to = request.request_uri
redirect_to login_url, :alert => 'Access denied!'
end
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private
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def authenticate(role = 'any')
# Attempt to retrieve authenticated user from controller instance or session...
if !current_user
# No user at all: redirect to login page.
session[:user_id] = nil
session['return_to'] = request.fullpath
redirect_to login_url, :alert => 'Authentication required!'
else
# We have an authenticated user, now check role...
# Roles gets the user through his memberships.
hasRole = case role
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when "admin" then current_user.role_admin?
when "finance" then current_user.role_finance?
when "article_meta" then current_user.role_article_meta?
when "suppliers" then current_user.role_suppliers?
when "orders" then current_user.role_orders?
when "any" then true # no role required
else false # any unknown role will always fail
end
if hasRole
current_user
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else
deny_access
end
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end
end
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def authenticate_admin
authenticate('admin')
end
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def authenticate_finance
authenticate('finance')
end
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def authenticate_article_meta
authenticate('article_meta')
end
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def authenticate_suppliers
authenticate('suppliers')
end
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def authenticate_orders
authenticate('orders')
end
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# checks if the current_user is member of given group.
# if fails the user will redirected to startpage
def authenticate_membership_or_admin
@group = Group.find(params[:id])
unless @group.member?(@current_user) or @current_user.role_admin?
flash[:error] = "Diese Aktion ist nur für Mitglieder der Gruppe erlaubt!"
if request.xml_http_request?
render(:update) {|page| page.redirect_to root_path }
else
redirect_to root_path
end
end
end
# Stores this controller instance as a thread local varibale to be accessible from outside ActionController/ActionView.
def store_controller
Thread.current[:application_controller] = self
end
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# Sets the thread local variable that holds a reference to the current controller to nil.
def remove_controller
Thread.current[:application_controller] = nil
end
# Get supplier in nested resources
def find_supplier
@supplier = Supplier.find(params[:supplier_id]) if params[:supplier_id]
end
# Set config and database connection for each request
# It uses the subdomain to select the appropriate section in the config files
# Use this method as a before filter (first filter!) in ApplicationController
def select_foodcoop
if Foodsoft.config[:multi_coop_install]
if !params[:foodcoop].blank?
begin
# Set Config
Foodsoft.env = params[:foodcoop]
# Set database-connection
ActiveRecord::Base.establish_connection(Foodsoft.database)
rescue => error
flash[:error] = error.to_s
redirect_to root_path
end
else
redirect_to root_path
end
else
# Deactivate routing filter
RoutingFilter::Foodcoop.active = false
end
end
def items_per_page
if (params[:per_page] && params[:per_page].to_i > 0 && params[:per_page].to_i <= 100)
@per_page = params[:per_page].to_i
else
@per_page = 20
end
end
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end