thanks for response
THis here would produce syntax error:
:include => {:reports, :notifications => :notification_codes}
So I try this (to ensure :reports has a value):
{:include => {:reports => {}, :notifications => :notification_codes}}
And this is ultimately what it would look like:
User.where(:id => params[:user_id]).first.units.to_json({:include =>
{:reports => {}, :notifications => :notification_codes}})
But this will say:
can't convert Symbol into Hash
On Nov 16, 3:14 am, Frederick Cheung <[email protected]>
wrote:
> On Nov 15, 11:06 pm, John Merlino <[email protected]> wrote:
>
>
>
>
>
>
>
>
>
> > this error usually occurs when trying to mix 1st and 2nd order
> > relationships in a single to_json call:
>
> > undefined method `macro' for nil:NilClass
>
> > Rails 3 has this way to support 2nd order relationships:
>
> >http://apidock.com/rails/ActiveRecord/Serialization/to_json
>
> > So I try to use it:
>
> > @units = User.where(:id =>
> > params[:user_id]).first.units.to_json(:include => {
> > :only => :reports,
> > :notifications => {:include => {:only
> > => :notification_codes} }
> > })
>
> > A unit has many reports and notifications. And a notification belongs
> > to notification code.
>
> There is an example of second order include & only on the page you
> link to. You're using :only to refer to association names whereas only
> is supposed to denote which attributes you want to show for a given
> object so i think you are confusing to_json. something like :include
> => {:reports, :notifications => :notification_codes} should do the
> trick.
>
> Fred
>
> :include => {:notifications, :only => :reports, :include => {:
>
>
>
>
>
>
>
> > This is the relationship between notifications and notification codes:
>
> > //notifications
> > belongs_to :notification_code, :foreign_key => :code
>
> > //notification codes
> > has_many :notifications
>
> > So I am not sure why error occurs.
>
> > Thanks for response
--
You received this message because you are subscribed to the Google Groups "Ruby
on Rails: Talk" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.
