FEATURE: add rake task for import/export of site settings

lib/tasks/site_settings.rake

@@ -0,0 +1,63 @@
+require 'yaml'
+
+class SiteSettingsTask
+  def self.export_to_hash
+    site_settings = SiteSetting.all_settings
+    h = {}
+    site_settings.each do |site_setting|
+      h.store(site_setting[:setting].to_s, site_setting[:value])
+    end
+    h
+  end
+end
+
+desc "Exports site settings"
+task "site_settings:export" => :environment do
+  h = SiteSettingsTask.export_to_hash
+  puts h.to_yaml
+end
+
+desc "Imports site settings"
+task "site_settings:import" => :environment do
+  yml = (STDIN.tty?) ? '' : STDIN.read
+  if yml == ''
+    puts ""
+    puts "Please specify a settings yml file"
+    puts "Example: rake site_settings:import < settings.yml"
+    exit 1
+  end
+
+  puts ""
+  puts "starting import..."
+  puts ""
+
+
+  h = SiteSettingsTask.export_to_hash
+  counts = { updated: 0, not_found: 0, errors: 0 }
+
+  site_settings = YAML::load(yml)
+  site_settings.each do |site_setting|
+    key = site_setting[0]
+    val = site_setting[1]
+    if h.has_key?(key)
+      if val != h[key] #only update if different
+        begin
+          result = SiteSetting.set_and_log(key, val)
+          puts "Changed #{key} FROM: #{result.previous_value} TO: #{result.new_value}"
+          counts[:updated] += 1
+        rescue => e
+          puts "ERROR: #{e.message}"
+          counts[:errors] += 1
+        end
+      end
+    else
+      puts "NOT FOUND: existing site setting not found for #{key}"
+      counts[:not_found] += 1
+    end
+  end
+  puts ""
+  puts "Results:"
+  puts " Updated:   #{counts[:updated]}"
+  puts " Not Found: #{counts[:not_found]}"
+  puts " Errors:    #{counts[:errors]}"
+end