* Add comments to photos
Extend the photo show page to support comments by logged in users.
- Make the Comment model polymorphic.
- Update the Photo and Post models to have comments.
- Update the comments controller to handle the polymorphic association.
- Update the photo show page to display comments and a comment form.
- Create a reusable comments partial.
* Add migration
* Fix tests
* Fix tests
* Slightly fix tests
* Fix variables
* Add field
* Refactor slightly
* Refactor slightly
* Refactor slightly
* Refactor
* Photos respond to this as well
* Refactor to polymorphic_url
* Rename
* Wrong relationship
* Refactor and fix tests
* Fix relationships
* Fix rendering
* Fix tests
* Fix model tests
* Fix test
* Fix test
* Fix test
* Fix test
* Fix controller spec
* Fix view tests
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Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
Co-authored-by: Daniel O'Connor <daniel.oconnor@gmail.com>
Improved program efficiency (in querying in particular) by replacing .count and .length with .size for collections.
Fix error in refactoring
Reverted some .size into .count
We figured that doing without it was more like the simplest thing that
could possibly work.
Note that we edited the migration in place after rolling back. This
would cause problems if anyone had downloaded the code from pozorvlak's
repo the other day and run it, but we're assuming they didn't (since
they wouldn't have got anything interesting out of it anyway.)