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Problem executing simple model#to_json
Reported by Líus Fontenelle | February 21st, 2010 @ 12:07 AM
I'm trying create and run a simple ("hello world") app on Rails 3 pre (and Ruby 1.9.1, under RVM). After installation succeed properly, I executed the follow command sequence:
$ rails ror3test $ cd ror3test $ rails generate scaffold user name:string $ rake db:migrate $ rails server
Until here, all it's ok. So, I added the following line on index action:
format.json { render :json => @users.to_json }
This is ok too, but if I call to_json method with any argument, like:
format.json { render :json => @users.to_json(:methods =>
:caps) }
or
format.json { render :json => @users.to_json(:only => [:name]
}
the following error occur:
TypeError in UsersController#index
wrong argument type Hash (expected Data)
A more detailed error information is attached.
Comments and changes to this ticket
-
David Trasbo July 1st, 2010 @ 09:54 PM
- Assigned user set to Ryan Bigg
I was unable to duplicate this issue on
master
:➜ ticket_4015 script/rails g model user name:string ➜ ticket_4015 rake db:migrate (in /Users/dtrasbo/code/rails/railties/tmp/ticket_4015) ➜ ticket_4015 script/rails g controller users index ➜ ticket_4015 script/rails c Loading development environment (Rails 3.0.0.beta4) ruby-1.9.2-preview3 > User.create(:name => 'David Trasbo') => #<User id: 1, name: "John Smith", ...> ruby-1.9.2-preview3 > User.create(:name => 'Marc Hejner') => #<User id: 2, name: "David Trasbo", ...>
class UsersController < ApplicationController def index @users = User.all respond_to do |format| format.json { render :json => @users.to_json(:only => :name) } end end end
Response body for
http://localhost:3000/users.json
:[{"user":{"name":"John Smith"}},{"user":{"name":"David Trasbo"}}]
This ticket can be closed.
-
David Trasbo July 1st, 2010 @ 09:57 PM
Gah, you'll probably notice I tried to change some names above, but looked over a couple of places.
-
David Trasbo September 9th, 2010 @ 01:22 PM
- Assigned user changed from Ryan Bigg to Rohit Arondekar
Closable, see above.
-
Rohit Arondekar September 9th, 2010 @ 01:45 PM
- State changed from new to invalid
- Importance changed from to Low
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