[p0M][T4] handle ratings and comments in the event detail page

[rayli09]

Context

1. rating path is too long and too many redirects
2. same thing for editing comments

Goal

Move editing comments && rating features on the same page at the event detail page.
Specifically, once hit rate button, a form should appear right below the rating button and input information as before. Once hit submit rating, redirect again to the event detail page, but with updated info. Same thing for editing comments.

Tasks

• [p0S]refactor editing comment to be on event detail page
• [p0M]refactor rating to be on event detail page

Eng cost estimation

3 days per task
I found the listed resources, linked below, and found this is actually not difficult. The key idea is to partially render views in the html page. We can first try refactoring the editing comment.

Resources:

1. https://stackoverflow.com/questions/19844652/how-to-render-a-view-inside-of-another-view-rails-4