Question

I have an iOS project that sends a Person class with one attribute name which is “data” to the server. The server sees it, but sets it to null.

Processing PeopleController#create (for 127.0.0.1 at 2012-01-13 03:55:46) [POST]
  Parameters: {"name"=>"data"}

Person Create (0.4ms)   INSERT INTO "people" ("created_at", "updated_at", "name")
VALUES('2012-01-13 11:55:46', '2012-01-13 11:55:46', NULL)
Completed in 27ms (View: 1, DB: 0) | 200 OK

It’s a scaffold generated Rails app with Person has_many dogs and dogs belongs_to person.
The following is the scaffold generated create method:

def create
  @person = Person.new(params[:person])
  respond_to do |format|
    if @person.save
      flash[:notice] = 'Person was successfully created.'
      format.html { redirect_to(@person) }
      format.xml  { render :xml => @person }
      format.json { render :json => @person }
    else
      format.html { render :action => "new" }
      format.xml  { render :xml => @person.errors, :status => :unprocessable_entity }
      format.json { render :json => @person.errors, :status => :unprocessable_entity }
    end
  end
end

What am I doing wrong? Do I need to write a custom JSON parser?
I use Rails version 2.3.4 with Ruby 1.8.7.

Answer 1

You are building your model using params[:person]. Or, you can see that the parameters received are {"name"=>"data"}, when they should be {"person" => {"name"=>"data"}}