title: Rails has_and_belongs_to_many & has_many :through scaffolding
body: <p>Is there a way to generate a scaffold for Rails models that have either a has_and_belongs_to_many or has_many :through relationship?  If not, is there a developmental reason why some basic form of this functionality has not been included?  Rails requires developers to generate and edit a "custom" "join table migration."  Is the necessary attention to detail a way of reminding Rails developers of some important fact or is this simply an example of how Rails is a 'work in progress?'  </p>
  
  <p>A quick Stackoverflow search for:   </p>
  
  <pre><code>"has_and_belongs_to_many" yields 821 questions  
  "has_many :through" yields 933 questions  
  </code></pre>
  
  <p>... and many of these start with "How do I..."  So it seems the topic is not trivial and relevant to SO users.  I Guess I am wondering why it has not received attention.  Is the matter more complex than it seems?  The feature set for Rails seems so extensive.  I keep wondering why scaffolding for associations with join tables has been omitted.</p>
  
  <p>Please focus your answer toward the assertions above or "include statement like, "A scaffolding would have to include..."  or "A rails generate script would need..."</p>
  
  <p>Thanks!</p>