Support for replacing Site Message content with keys specific to a multisite.

lib/multisite_i18n.rb

@@ -0,0 +1,31 @@
+# Allow us to override i18n keys based on the current site you're viewing.
+module MultisiteI18n
+
+  class << self
+    
+    # It would be nice if there was an easier way to detect if a key is missing.
+    def translation_or_nil(key, opts)
+      missing_text = "missing multisite translation"
+      result = I18n.t(key, opts.merge(default: missing_text))
+      return nil if result == missing_text
+      result
+    end
+
+    def site_translate(current_site, key, opts=nil)
+      opts ||= {}
+      translation = MultisiteI18n.translation_or_nil("#{current_site || ""}.#{key}", opts)
+      if translation.blank?
+        return I18n.t(key, opts)
+      else
+        return translation  
+      end
+    end
+
+    def t(*args)
+      MultisiteI18n.site_translate(RailsMultisite::ConnectionManagement.current_db, *args)    
+    end
+
+    alias :translate :t
+  end
+
+end

lib/system_message.rb

@@ -1,5 +1,6 @@
 # Handle sending a message to a user from the system.
 require_dependency 'post_creator'
+require_dependency 'multisite_i18n'
 
 class SystemMessage
 
@@ -14,20 +15,20 @@ class SystemMessage
   def create(type, params = {})    
 
     defaults = {site_name: SiteSetting.title,
-              username: @recipient.username,
-              user_preferences_url: "#{Discourse.base_url}/users/#{@recipient.username_lower}/preferences",
-              new_user_tips: I18n.t("system_messages.usage_tips.text_body_template"),
-              site_password: "",
-              base_url: Discourse.base_url}
+                username: @recipient.username,
+                user_preferences_url: "#{Discourse.base_url}/users/#{@recipient.username_lower}/preferences",
+                new_user_tips: MultisiteI18n.t("system_messages.usage_tips.text_body_template"),
+                site_password: "",
+                base_url: Discourse.base_url}
 
     params = defaults.merge(params)
 
     if SiteSetting.restrict_access?
-      params[:site_password] = I18n.t('system_messages.site_password', access_password: SiteSetting.access_password)
+      params[:site_password] = MultisiteI18n.t('system_messages.site_password', access_password: SiteSetting.access_password)
     end
               
-    title = I18n.t("system_messages.#{type}.subject_template", params)
-    raw_body = I18n.t("system_messages.#{type}.text_body_template", params)
+    title = MultisiteI18n.t("system_messages.#{type}.subject_template", params)
+    raw_body = MultisiteI18n.t("system_messages.#{type}.text_body_template", params)
 
     PostCreator.create(SystemMessage.system_user,
                        raw: raw_body,

spec/components/multisite_i18n_spec.rb

@@ -0,0 +1,37 @@
+require 'spec_helper'
+require_dependency 'multisite_i18n'
+
+describe MultisiteI18n do
+
+  before do
+    I18n.stubs(:t).with('test', {}).returns('default i18n')
+    MultisiteI18n.stubs(:translation_or_nil).with("default.test", {}).returns(nil)
+    MultisiteI18n.stubs(:translation_or_nil).with("other_site.test", {}).returns("overwritten i18n")
+  end
+
+  context "no value for a multisite key" do
+    it "it returns the default i18n key" do
+      MultisiteI18n.site_translate('default', 'test').should == "default i18n"
+    end
+  end
+
+  context "with a value for the multisite key" do
+    it "returns the overwritten value" do
+      MultisiteI18n.site_translate('other_site', 'test').should == "overwritten i18n"
+    end    
+  end
+
+  context "when we call t, it uses the current site" do
+
+    it "returns the original" do
+      MultisiteI18n.t('test').should == 'default i18n'
+    end
+
+    it "returns the overwritten" do
+      RailsMultisite::ConnectionManagement.stubs(:current_db).returns('other_site')
+      MultisiteI18n.t('test').should == "overwritten i18n"
+    end
+
+  end
+
+end