3 files changed, 101 insertions, 0 deletions
diff --git a/app/models/concerns/admin_column.rb b/app/models/concerns/admin_column.rb
new file mode 100644
index 000000000..6e19f5aa5
--- /dev/null
+++ b/app/models/concerns/admin_column.rb
@@ -0,0 +1,17 @@
+module AdminColumn
+  extend ActiveSupport::Concern
+
+  included do
+    class << self
+      attr_reader :non_admin_columns
+    end
+
+    @non_admin_columns = []
+  end
+
+  def for_admin_column
+    self.class.content_columns.reject { |c| self.class.non_admin_columns.include?(c.name) }.each do |column|
+      yield(column.human_name, send(column.name), column.type.to_s, column.name)
+    end
+  end
+end
diff --git a/app/models/concerns/public_body_derived_fields.rb b/app/models/concerns/public_body_derived_fields.rb
new file mode 100644
index 000000000..f389e3cbf
--- /dev/null
+++ b/app/models/concerns/public_body_derived_fields.rb
@@ -0,0 +1,47 @@
+module PublicBodyDerivedFields
+
+    extend ActiveSupport::Concern
+
+    included do
+        before_save :set_first_letter
+
+        # When name or short name is changed, also change the url name
+        def short_name=(short_name)
+            super
+            update_url_name
+        end
+
+        def name=(name)
+            super
+            update_url_name
+        end
+
+    end
+
+    # Return the short name if present, or else long name
+    def short_or_long_name
+        if self.short_name.nil? || self.short_name.empty?
+            self.name.nil? ? "" : self.name
+        else
+            self.short_name
+        end
+    end
+
+    # Set the first letter, which is used for faster queries
+    def set_first_letter
+        unless name.blank?
+            # we use a regex to ensure it works with utf-8/multi-byte
+            first_letter = Unicode.upcase name.scan(/^./mu)[0]
+            if first_letter != self.first_letter
+                self.first_letter = first_letter
+            end
+        end
+    end
+
+    def update_url_name
+        if changed.include?('name') || changed.include?('short_name')
+            self.url_name = MySociety::Format.simplify_url_part(self.short_or_long_name, 'body')
+        end
+    end
+
+end
diff --git a/app/models/concerns/translatable.rb b/app/models/concerns/translatable.rb
new file mode 100644
index 000000000..2aa4620d0
--- /dev/null
+++ b/app/models/concerns/translatable.rb
@@ -0,0 +1,37 @@
+module Translatable
+  extend ActiveSupport::Concern
+
+  included do
+    accepts_nested_attributes_for :translations, :reject_if => :empty_translation_in_params?
+  end
+
+  def find_translation_by_locale(locale)
+    translations.find_by_locale(locale)
+  end
+
+  def translated_versions
+    translations
+  end
+
+  def ordered_translations
+    translations.select do |translation|
+      I18n.available_locales.include?(translation.locale)
+    end.sort_by do |translation|
+      I18n.available_locales.index(translation.locale)
+    end
+  end
+
+  def build_all_translations
+    I18n.available_locales.each do |locale|
+      if translations.none? { |translation| translation.locale == locale }
+        translations.build(:locale => locale)
+      end
+    end
+  end
+
+  private
+
+  def empty_translation_in_params?(attributes)
+    attributes.select { |k, v| v.present? && k.to_s != 'locale' }.empty?
+  end
+end