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PORails - embedded polymorphic comment list + add comment form - example?
 

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    <p>Hey, all. Working on my first Rails app.</p> <p>I've searched all around - read a bunch of tutorials, articles, and forum posts, watched some screencasts, and I've found a few examples that come close to what I'm trying to do (notably <a href="http://railscasts.com/episodes/154-polymorphic-association" rel="nofollow noreferrer">http://railscasts.com/episodes/154-polymorphic-association</a> and ep 196 about nested model forms), but not exactly.</p> <p>I have two models (Podcast and BlogPost) that need to be commentable, and I have a Comment model that is polymorphically related to both. The railscasts above had a very similar example (ep 154), but Ryan used a full set of nested routes, so there were specific templates for adding and editing comments. What I want to do is show the list of comments right on the Podcast or BlogPost page, along with an Add Comment form at the bottom. I don't need a separate add template/route, and I don't need the ability to edit, only delete.</p> <p>This is a pretty common design on the web, but I can't find a Rails example specifically about this pattern. Here's my current understanding:</p> <p>I need routes for the create and delete actions, of course, but there are no templates associated with those. I'm also guessing that the right approach is to create a partial that can be included at the bottom of both the Podcast and BlogPost show template. The logical name for the partial seems to me to be something like _comments.html.haml. I know it's a common convention to have the object passed to the partial be named after the template, but calling the object 'comments' seems to not match my use case, since what I really need to pass is the commentable object (Podcast or BlogPost). So, I guess I'd use the locals option for the render partial call? (:commentable => @podcast).</p> <p>Inside the partial, I could call commentable.comments to get the comments collection, render that with a second partial (this time with the conventional use case, calling the partial _comment.html.haml), then create a form that submits to... what? REST-wise, it should be a POST to the collection, which would be /podcast|blogpost/:id/comments, and I think the helper for that is podcast_comments_path(podcast) if it were a podcast - not sure what to do though, since I'm using polymorphic comments. That would trigger the Comment.create action, which would then need to redirect back to the podcast|blogpost path /podcast|blogpost/:id.</p> <p>It's all a bit overwhelming, which is why I was really hoping to find a screencast or example that specifically implements this design.</p>
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    1. CODo you have any source showing what you've tried and where it's breaking down? Your post is kind of overwhelming, so maybe seeing some code will prove helpful.
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    2. COSorry, I don't, because I'm not sure how to implement it. I can provide supporting code, like model and route definitions, if you think it's relevant. Also, if it's not clear from the description what I'm trying to do, I can try to clarify it better...
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    3. COThis should not really have the embedded tag as it is not about programming an embedded system. I do not have enough rep to change the tag.
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