extracting term counting to separate, TextChunk class

app/models/cloud.rb

@@ -1,17 +1,6 @@
 class Cloud 
   attr_accessor :title, :words, :max_count, :min_count  # need these to derive the right CSS class
 
-  BORING_TERMS = [
-    'secretary of state',
-    'secretary of state for the home department'
-  ]
-
-  # Yahoo term extractor likes sending back 'developme'. I have no
-  # idea why. We replace it with 'development' later on.
-  BROKEN_TERMS = {
-    'developme' => 'development'
-  }
-
   def initialize(params)
     @mp = params[:mp]
     @title = "#{@mp.full_name} Written Questions"
@@ -24,9 +13,11 @@ def count_words
     @max_count = 0
     @min_count = 999
 
+    tc = TextChunk.new text
+
     rtn = []
-    terms.sort.each do |term|
-      value = text.downcase.split(%r[#{term}]).size
+    tc.terms.sort.each do |term|
+      value = tc.body.downcase.split(%r[#{term}]).size
       RAILS_DEFAULT_LOGGER.debug "Counting: #{term}, #{value}"
       @max_count = [ @max_count, value ].max
       @min_count = [ @min_count, value ].min
@@ -39,17 +30,6 @@ def count_words
     rtn.sort {|a,b| a.value <=> b.value}.reverse
   end
 
-  def terms
-    list = TagExtractor.extract(text) - BORING_TERMS
-    BROKEN_TERMS.each do |term, replacement|
-      if list.include? term
-        list.delete term
-        list << replacement
-      end
-    end
-    list
-  end
-
   def text
     @text ||= @mp.written_answer_text
   end

app/models/text_chunk.rb

@@ -0,0 +1,30 @@
+class TextChunk
+  attr_accessor :body
+
+  BORING_TERMS = [
+    'secretary of state',
+    'secretary of state for the home department'
+  ]
+
+  # Yahoo term extractor likes sending back 'developme'. I have no
+  # idea why. We replace it with 'development' later on.
+  BROKEN_TERMS = {
+    'developme' => 'development'
+  }
+
+  def initialize(body)
+    @body = body
+  end
+
+  def terms
+    list = TagExtractor.extract(body) - BORING_TERMS
+    BROKEN_TERMS.each do |term, replacement|
+      if list.include? term
+        list.delete term
+        list << replacement
+      end
+    end
+    list
+  end
+
+end