Returning: A full page, JSON, and a partial HTML snippet from Ruby on Rails Controller
Question
I know this question has been asked in part a few other times on SO but I was curious about doing it a different way. In my Ruby on Rails app I have an action called list on my UsersController.rb controller. I want this list to respond to 3 different things
- The page itself. Rending the whole page of users I specify
- A JSON list of users for the page I specify
- A partial view of just the rows for the page I'm specifying formatted as HTML.
Imagine a full page (header, footer, everything) with a table that has page 1 of users. When I click page 2 I want to kick off an ajax request back to the same controller action to give me just the html rows for page 2. I also want to persist my JSON API still allowing my controller to return JSON lists when asked. I imagine it looking someting like this.
class UsersController < ApplicationController
def list
respond_to do |format|
format.html # RETURNS MY VIEW
format.json # RETURNS MY JSON LIST
format.partial_html # RETURNS MY PARTIAL HTML
end
end
end
Is there anyway to accomplish this in RoR? Or am I doomed into having to create another action in my controller just to return technically the same data?
Could I make this happen by specifying my own MIME type? Should I snake in the partial as an XML return type?
2 answers
solution1
3 ACCPTED 2012-11-15 18:49:25
- Use
format.json the third line. - Put the partial html on a partial, call it
app/views/users/_html_rows.html.erb. - render that partial both on the full html and on the js version.
You will have app/views/users/list.html.erb with the full html content, which will be something like this:
<html>
<body>
.....
<table id="my_table"><%= render 'users/html_rows', users: @users %></table>
</body>
</html>
You will have app/views/users/_html_rows.html.erb with:
<tbody>
<% users.each do |user| %>
<tr>
<td>user.name</td>
</tr>
</tbody>
Then you will have app/views/users/list.js.erb with:
$("#my_table tbody").html("<%= render 'users/html_rows', users: @users %>");
This probably will solve your problem.
solution2
0 2015-09-18 09:28:40
You can add an additional mime type entry to work with respond_to . In config/initializers/mime_types.rb , add:
# htmlp means "html partial"
Mime::Type.register "text/html", :htmlp
In your controller you can now do:
def list
respond_to do |format|
format.html
format.json
format.htmlp { render layout: nil }
end
end
And create a template called list.htmlp.erb with your partial content in it.
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