Displaying 20 results from an estimated 10000 matches similar to: "Single-table inheritance and validation problem"
2012 Jun 09
0
Re: ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: 'Transactions::DummyDdnlTransaction'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance. P
FIXED: Transaction is a reserved word, and it cannot be used even
though I put it into its own module. So my guess is
Transactions::Transaction still somehow got resolved to the Rails
internal Transaction class.
Renamed the Transaction (and its subclasses) to Transact and it works fine now.
Thanks!
-- cmdjohnson
On Sat, Jun 9, 2012 at 3:08 AM, Commander Johnson
2012 Jun 09
3
ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: 'Transactions::DummyDdnlTransaction'. This error is raised because the column 'type' is reserved for storing the class in case of inheritance. Pleas
Hello,
I stumble upon this error when loading a subclass of the Transaction
class. For full details, see the pastie:
http://pastie.org/4053678
Error message: ActiveRecord::SubclassNotFound: The single-table
inheritance mechanism failed to locate the subclass:
''Transactions::DummyDdnlTransaction''. This error is raised because the
column ''type'' is reserved for
2006 Jan 10
0
Validation and Single-Table Inheritance
I''m seeing an inconsistent application of validation in a single-table
inheritance situation, and wanted to see if anyone else has seen this.
I have the following:
class Contact < ActiveRecord
validates_presence_of :first_name
...
end
class EmployeeContact < Contact
...
end
If I do the following while running the server or in test mode, no
error occurs eventhough the first
2010 Oct 13
2
acts_as_list issue in single table inheritence
Hello Rails experts,
Need your help in following issue with the acts_as_list and single
table inheritence
Code details :
http://pastie.org/1214846
Hello Rails experts,
Need your help in following issue with the acts_as_list and single
table inheritence
Code details :
http://pastie.org/1214846
But here I need create those entries with the scope on Relater only and
not on RelaterFeed or
2006 Apr 14
1
Validating Existing Models
I''ve got a user object which has quite a few attributes mapped to the
database. As of right now I''ve got some validations in the model like:
validates_presence_of :password, :message => "You must specify a valid
password."
validates_confirmation_of :password, :message => "Password doesn''t match
the confirmation."
validates_presence_of
2006 May 10
4
validates_uniqueness_of and create atomicity
Hi folks,
I have a question regarding validates_uniqueness_of, and similar
before-filter-like events attempting to guarantee some DB state prior
to modification.
>From my reading of ActiveRecord, validate_uniqueness_of appears to
cause a SELECT on the underlying table attempting to ensure that a
record with ID(s) specified in the validates_uniqueness_of statement
is not already present, prior
2007 Jul 06
2
validations of "type" when using Single Table Inheritance
Sorry if I''m just dumbing out, but is there a reason that when using
Single Table Inheritance Rails doesn''t really validate the "type"
field or provide some mechanism to do so? seems like a good way to
corrupt a database. Because the "type" is also a special attribute, I
had to resort to an ugly hack like:
class ActiveRecord::Base
def type_attr
2006 Jun 27
6
Custom action on Active Record Validation Failure?
Instead of having it highlight the bad fields when you enter in a record
that fails validation, is there a way to make it do an action? I''m
looking for something like this:
validates_uniqueness_of :user_id,:url => {:controller => "headline",
:action => "index"}
so that on failing the uniqueness check, it would go to the headline
controller.
--
2005 Dec 17
0
bug? saving (valid) updated object results in validation error
Hi!
I have an error that I don''t understand. It shouldn''t be happening,
according to the documentation! I have a class, defined as below.
> class Coupon < ActiveRecord::Base
> belongs_to :product
> belongs_to :account
> validates_presence_of :product
> validates_associated :product
> validates_presence_of :voucher
> validates_presence_of
2007 Apr 20
0
Rails validations, how to improve them
Here is a discussion of a problem and potential solution for Rails
validations.
Rails has a fundamental problem with validations in that it essentially
requires you to either
1. Accept the default error messages (which can often lead to ugly and
unfriendly messages for the user)
2. Override validation messages at the model level like so
validates_uniqueness_of :field, :message =>
2006 Aug 23
5
validation, concurrency, and transactions
Hi,
Something has been bothering me about model validation: how do I know that
the database has not changed in between when I validate my model''s data, and
when it actually gets saved to the database? As a simple example, say I have
a User model like:
class User
validates_uniqueness_of :username
end
When this gets saved to the database, the validation code checks that there is
2010 Mar 21
0
Validates uniqueness scope
In a Rails 2.x validation to check if the name of some model is unique
within a some category, I would use:
`validates_uniqueness_of :name, :scope => :category_id`
In Rails 3, this is replaced with:
`validates :name, :uniqueness => true`
However, I can''t seem to find a method of defining the uniqueness''
scope. Am I missing something?
Thanks,
Angelo
--
You received
2008 Jul 17
2
problems with validation on STI
I have the following STI table:
def self.up
create_table :distributions do |t|
t.string :type
t.integer :simulation_id
t.string :dist_name
t.string :desc, :default=> ''fixed''
t.float :param1, :default => 5.0
t.float :param2, :param3
t.timestamps
#fields for RscDist
t.integer :resource_id
#fields for LoadDist
2006 Jan 20
3
Is there a way to validate a model w/o saving it?
I have some code in my controller which looks like this:
if request.post? and @account.save and @user.save
...
end
and in my Account and User models I have many :validates, like so
account.rb
validates_presence_of :subdomain, :on => :create
validates_uniqueness_of :subdomain, :on => :create, :message => "is
already being used"
validates_exclusion_of
2005 Mar 10
2
NoMethodError in Event_type#create
I am new Ruby on Rails, so excuse me if my question seems pretty obvious.
I am trying to validate uniqueness of a filed:
class EventType < ActiveRecord::Base
belongs_to :sport
validates_uniqueness_of :event_type
end
When I run it, I get this error message:
Showing /event_type/new.rhtml where line #27 raised undefined method
`each'' for nil:NilClass
<select
2006 Aug 16
6
Create several models at once and validating
I have two models User and Team. Also I have a register form where the
new
user fill in her data and choose a name for a Team.
Well, in the user model there are several validations which work fine,
but
team model also have a validation for a uniqueness name that doesn''t
fire up
when she gives an existent team''s name.
This is the flow it follows:
/user/new -> it shows a
2006 Sep 12
4
ActiveRecord Validations - validates_uniqueness_of
Hello,
I''m wanting to use Mocha and Stubba for my tests in place of the
default Rails testing with fixtures.
I have the following class:
class Person < ActiveRecord::Base
validates_uniqueness_of :email
end
and am wondering how I can test to ensure that the
validates_uniqueness_of validation is running.
Any ideas?
-Jonathan
2006 Oct 13
1
Edge rails, single table inheritance and keeping multiple classes in a single file
So is the official stance as per edge rails that multiple class
definitions must go into separate files? I was trying to use STI with
acts_as_attachment, to have all my attachment classes go into a single
file, for example:
attachment.rb
class Attachment < ActiveRecord::Base
end
class UserPicture < Attachment
belongs_to :user, :foreign_key => ''owner_id''
2006 Aug 10
2
validates_uniqueness_of problem
hi
Could I check to strings for uniqueness together and not individually?
That means for me in an example:
name: sex: result:
----- ---- -------
miller m unique
miller f unique
jackson m unique
miller m isn''t unique
So I want to check the name and sex be together unique. The name isn''t
2005 Sep 29
0
Table relationships with single table inheritance
Hi,
How do I relate a table to another when one of the models uses single table
inheritance? Will this even work? This is the specific problem I am having:
There''s an "Address" model with "ShippingAddress" and "BillingAddress" as
subclasses. It looks like this:
class Address < ActiveRecord::Base
End
class ShippingAddress < Address
has_one :order