For the installation instructions to work, we need to check whether t…

…he table exists before using acts_as_taggalbe_on.

app/models/blog.rb

@@ -1,7 +1,7 @@
 class Blog < ActiveRecord::Base
-  
-  acts_as_taggable_on :categories, :tags, :authors
-  
+
+  acts_as_taggable_on :categories, :tags, :authors if self.table_exists?
+
   has_many :comments
 
   named_scope :published, lambda {{:conditions => ["publishing_date < '#{Time.now.to_formatted_s(:db)}' and draft != ?", true],
@@ -17,9 +17,9 @@ class Blog < ActiveRecord::Base
   validates_format_of :permalink, :with => /^(([-_]|[a-z]|\d){1,100})$/, :message => " is invalid, only lowercase alphanumeric character and _-"
   validates_length_of :permalink, :within => 4..99
   validates_length_of :title, :within => 2..95
-  
+
   NUM_RECENT_POSTS = 5
-  
+
   def before_validation
     self.permalink = title.parameterize if permalink.blank?
   end
@@ -29,15 +29,15 @@ def published?
     # the publishing date is before now and it is not a draft blog post.
     publishing_date <= Time.now && !draft
   end
-  
+
   def approved_comment_count
     comments.approved.size
   end
-  
+
   def self.grouped_by_date
     all.group_by { |blog| blog.publishing_date.to_date }.sort {|a,b| b[0] <=> a[0]}
   end
-  
+
   def self.tags
     Blog.published.tag_counts.collect(&:name)
   end
@@ -49,15 +49,15 @@ def self.categories
   def self.authors
     Blog.published.author_counts.collect(&:name)
   end
-  
+
   def self.recent_posts
     Blog.published.first(NUM_RECENT_POSTS)
   end
-  
+
   def recent_posts
     recent_posts = Blog.published(:limit => (NUM_RECENT_POSTS+1))
     recent_posts.delete(self)
     recent_posts.first(NUM_RECENT_POSTS)
   end
-  
+
 end