Rails 3.3.5 to Rails 3.2 error

[deal bitte]

I have installed the latest version of rails and jruby. I have copied
all my files from rails 2.3.5 version and am trying to bring all to work
in this version

Project.rb
------------------
class Project < ActiveRecord::Base
has_and_belongs_to_many :people
has_many :documents, :conditions => ["project_id =?", self.id ]
..
..
end

application_helper.rb
--------------------------

def find_projects
user = Person.find(session[:userid])
projects = Project.find(:all)
..
..
..
end

I am getting an error
undefined method `id' for #<Class:0x182237ac> (self.id is the problem
guess)

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[masta Blasta]

deal bitte wrote in post #1070764:

>
> Project.rb
> ------------------
> class Project < ActiveRecord::Base
> has_and_belongs_to_many :people
> has_many :documents, :conditions => ["project_id =?", self.id ]
> ..
> ..
> end
>
> application_helper.rb
> --------------------------
>
> def find_projects
> user = Person.find(session[:userid])
> projects = Project.find(:all)
> ..
> ..
> ..
> end
>
> I am getting an error
> undefined method `id' for #<Class:0x182237ac> (self.id is the problem
> guess)

Not really answering your question here, but i would restructure some of
this code as follows, to better go with rails 3

class Project < ActiveRecord::Base
has_many :people, :through => 'people_project_join_table'
has_many :documents #:foreign_key => 'project_id' is default for this
relationship. Don't need.
..
..

def find_projects
user = Person.find(session[:userid])

projects = Project.all
..
..
..
end
--

Beyond that, whenever you get an error like 'undefined method for
class', first make sure you're in fact working with the class you think
you're working with by doing myobj.class

a common slip-up for me is trying to use object methods on an array of
said objects. Most scopes and associations will return arrays.

[Jodi Showers]

I suggest opening your console - type Person - the console should return to_s of the class - if not, the person model isn't in your path

better yet, take this opportunity to write some tests - start with the Person model

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[paul h]

On Tuesday, July 31, 2012 7:48:08 PM UTC+1, Jodi wrote:

I suggest opening your console - type Person - the console should return to_s of the class - if not, the person model isn't in your path

better yet, take this opportunity to write some tests

+1

 

- start with the Person model

On 2012-07-31, at 2:38 PM, masta Blasta wrote:

> deal bitte wrote in post #1070764:
>>
>> Project.rb
>> ------------------
>> class Project < ActiveRecord::Base
>> has_and_belongs_to_many :people
>> has_many :documents, :conditions => ["project_id =?", self.id ]

What does self.id refer to here? Has the project class been instantiated yet to make it available? Is it required?

 

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