steps in feature development: comment on notes, tag notes

gistfile1.txt

Commenting on notes:

- generate comments scaffold (controller, model, migration, views)

- add comment link and comment form spot to comment partial

- tell CommentsController#new to respond to JS requests

- create new.js.erb partial for comments controller

- the js partial updates the designated spot with the designated HTML (a new partial we created to render a comment form)

- the partials use params[:note_id] to find the right spot and prepare the form to communicate with the server

- :note_id is added to the comment link as a parameter

- use note.comments to print out comments on the note show page

- tell the comments controller to redirect to the note after the comment is saved





Tagging notes

- rename the picture_id field on the tagging model and add a taggable_type so the relationship is now polymorphic

- update the tagging form so that it deduces both id and type from the taggable object

- update the has_many relationship in tagging.rb, tag.rb, picture.rb

- add the has_many relationship to note.rb

- copy the form to the notes show page

- copy the tag readout to the notes show page

- update the tags show page so it can display either a picture's or a note's title

- write the method 'title' for notes so it can conform to that display template