Rails single table inheritance/subclass find condition in parent

Posted by slythic on Stack Overflow See other posts from Stack Overflow or by slythic
Published on 2010-03-29T14:02:39Z Indexed on 2010/03/29 14:23 UTC
Read the original article Hit count: 544

Filed under:

rails

|

subclass

|

single-table-inheritance

Hi all,

I have a table called Users (class User < ActiveRecord::Base) and a subclass/STI of it for Clients (class Client < User).

Client "filtering" works as expected, in other words Client.find(:all) works to find all the clients.

However, for users I need to filter the result to only find users that are NOT clients (where type is null or blank).

I've tried the following in my index controller but no matter what I put for the type it returns all users regardless of type.

User.find(:all, :conditions => { :type => nil }, :order => 'name')

Any clue on how to get this condition to work?

Thanks!

© Stack Overflow or respective owner

Related posts about rails

Ruby on Rails: url_for :back leads to NoMethodError for back_url

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I'm trying to use url_for(:back) to create a redirect leading back to a previous page upon a user's logging in. I've had it working successfully for when the user just goes to the login page on his or her own. However, when the user is redirected to the login page due to accessing a page… >>> More
Why am I getting "ArgumentError: wrong number of arguments (1 for 0)" when running my rails function

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm stumped on what's causing this. I get this error and stack trace in all my functional tests where I call 'post'. Here is the full stack trace: 7) Error: test_should_validate(UsersControllerTest): ArgumentError: wrong number of arguments (1 for 0) /Users/hisham/src/rails/ftuBackend/vendor/rails/actionpack/lib/action_controller/routing/route… >>> More
Spork servers super slow (>3m) to start for RSpec & Cucumber BDD

as seen on Stack Overflow - Search for 'Stack Overflow'
I recently installed a fresh development setup on my laptop and now notice that my instances of spork take several minutes to start up. This is also most likely of the RSpec and Cucumber tests start up times running super slow. I ran in diagnostic mode with the -d flag and received the output below… >>> More
trying to convert rails 2.3.4 app to rails 3 but views not appearing

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a simple rails 2.3.4 application I am trying to get running with rails 3.0.0-beta2. I have the server running and all my links and navigation showing, however for some reason the content of my views is not displaying. When I navigate to Site/index the html in my index.html.erb in my site… >>> More
Create new Rails project with previews rails version

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, The latest version of rails installed on my mac is 3.0.0.beta gem list returns rails (3.0.0.beta, 2.3.5, 2.3.4, 2.3.2, 2.2.2, 1.2.6) I want to create a new project using version 2.3.5 So I run: rails _2.3.5_ myProject But it returns the following error $ rails _2.3.5_ photosbackup /Library/Ruby/Site/1… >>> More

Related posts about subclass

To subclass or not to subclass

as seen on Stack Overflow - Search for 'Stack Overflow'
I have three objects; Action, Issue and Risk. These all contain a nunber of common variables/attributes (for example: Description, title, Due date, Raised by etc.) and some specific fields (risk has probability). The question is: Should I create 3 separate classes Action, Risk and Issue each containing… >>> More
Subclass of Subclass fluent nHibernate

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all My model looks like this: public class SelectionItem : BaseEntity // BaseEntity ==> id, timestamp stuff {//blabla} public class Size : SelectionItem {//blabla} public class Adultsize : Size {//blabla} I would like to use class-hierarchy-per-table-method of fluent nhibernate public… >>> More
iphone dev: UIImageview subclass interface builder - how to call custom initializer

as seen on Stack Overflow - Search for 'Stack Overflow'
hi. I messing with iphone developement. I have a uiimageview subclass that I want to use to detect touches. I have sucessfully added to interfacebuilder and I can detect a touch in my UIImageview subclass within my application so all is good on that front. however my UIImageView subclass has a… >>> More
Accessing super class function using subclass object

as seen on Stack Overflow - Search for 'Stack Overflow'
I have an object for a subclass who is of it's superclass type. There is a overridden function in subclass which gets executed when called using the object. How to call the parent's function using the same object? Is there any way to achieve this? package supercall; public class Main { public… >>> More
Animating a custom property of CALayer subclass

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a CALayer subclass, MyLayer, that has a NSInteger property called myInt. I'd really like to animate this property via CABasicAnimation, but it seems CABasicAnimation only works on so-called "animatable" properties (bounds, position, etc). Is there something I can override to make my custom… >>> More