Displaying 20 results from an estimated 30000 matches similar to: "Make these a prt of Ruby on Rails!"
2006 Jul 13
6
Migrations + foreign keys
Hi all,
In the AWDR author use the execute method to declare foreign keys:
execute "alter table.... add constraint.... foreign key...."
Is there a ruby sintax to declare a foreign key in a migration class?
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2006 Jul 10
3
Can migrations set up foreign key references?
I use Oracle and i really want to use migrations, but there seems to be
no way to setup foreign key constraints. Is this true? If it is then
doesn''t that make migrations useles with Oracle?
Thanks
Chris
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Posted via http://www.ruby-forum.com/.
2005 Jun 27
9
FK constraints overrated?
Hello folks,
I use to think that a relational databases without foreign keys
constraints enforced strictly by the RDBMS were no good, piece of crap,
data junk.
However, I''ve also learned the hard way that FKs constraints imposes
serious difficulties when moving data around, specially between
different DBs, or for loading test data or for upgrading DBs schemas, or
for porting DBs
2006 Aug 13
10
does rails enforce referential integrity???
Hi,
Is rails supposed to support referential integrity? That is rails
either support to be able to ensure that when a new contact is created
this can only happen if a valid suberb is associated with it, and which
mechanisms of the below are supposed to do this?
(a) using DB foreign key constraints information as a basis?
(b) using the "has_one" line in the model file to enfore?
If
2006 Nov 10
2
Testing with foreign keys
I''m looking for a plugin/whatever for preloading fixtures, to run
tests with FKs defined.
Specifying load order just doesn''t work for me, I need to purge the
test db, load all fixtures, and only then create the FK constraints.
Any suggestions?
Isak
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2006 Aug 16
14
Migrations: only one table per migration file?
Hi all
I have a new migration file created that adds some tables and fills one
with some data:
create_table :sound_styles do |t|
t.column :name, :string, :null => false
end
create_table :show_types do |t|
t.column :name, :string, :null => false
end
create_table :countries do |t|
t.column :name, :string, :null => false
end
ActionView::Helpers::FormOptionsHelper::COUNTRIES.each
2006 Feb 11
16
Why does''nt rails pick up more metadata from a mysql schema?
Hi,
when I define a db column to be non-nullable or of length 20 or as
numeric, I would expect rails to validate that, but that doesn''t seem
to be the case.
Any idea why that is? The metadata is accessible, at least in the mysql case.
I am using rails 1.0 with mysql 5.
Cheers,
Mariano
2006 Jul 19
4
Using Application.rhtml as layout for all controllers
I put my nav system in application layout. that way any controller
loading will have the nav system. I have one problem though - the <%=
yield %> is in the body, so how would my controllers specify other css
files?
my application layout would look like this:
<html>
<head>
title
css include
javascript include
</head>
<body>
nav system
<%=yield%>
2006 Feb 10
36
Advocating RoR in the enterprise?
Hi folks,
I''m looking for advice on how to promote RoR in my workplace.
Specifically, I''d like to work out a strategy for promoting
development in Rails as a new alternative to our existing technology
(the usual suspects... mostly Java/Oracle, .NET, PHP, and a bit of
Perl here and there).
Some background: I work for a fairly large state environmental agency
as a web developer.
2006 Jan 25
11
Schemas and Migrations
Hello-
I''m new to the ruby-based schemas and migrations. As I''m looking over
examples and such online, I see that many of them don''t make use of
schema-enforced attributes. For example, instead of:
t.column "post_id", :integer, :default => 0, :null => false
They do:
t.column "post_id", :integer
So I''m wondering -- is this
2006 Feb 15
2
migrations still
I think I am pissing into the wind to make migrations work at this
point.
Looking at
http://wiki.rubyonrails.org/rails/pages/UnderstandingMigrations
it appears that the problem that I am having is that postgresql can''t do
the drop_table part because of the foreign_key keys (constraints) which
requires ''cascade'' as an option to drop some of the tables that have
other
2006 Jan 08
22
Putting it all in one place with Schemas
I''m still relatively new to ROR, but I like what I see with the
database-neutral approach of Schemas. In the spirit of keeping it
simple and minimizing the number of files and location of information,
does ActiveState currently allow me to go ahead and place other low
level model information such as validation requirements and associations
inside the schema rather than putting it in
2006 Aug 07
28
Dr Nic’s Magic Models
Welcome! Welcome! Welcome! Ladies and Gentlemen, today you shall be
thrilled and dazzled by wonders of magical mystery.
Dr Nic?s Magic Models will now be unveiled to all. Mystery and magic
that you will be able to perform at home.
Within your ActiveRecord models, never again will you need to write:
* validates_presence_of validations
* has_many and belongs_to statements
* has_many
2006 Apr 11
9
rails equivalent to asp''s Application object?
In asp you have an Application built-in object, which works just like
the Session hash, but it lets you share information among all users of a
given application.
which is the rails equivalent???
and if there isn''t, how would you implement such a thing ? (there would
be concurrency issues to take into account, in fact asp''s application
object has some lock and unlock methods
2011 Nov 28
29
Lack of foreign-key constraints support in ActiveRecord
Is there any reason why AR has never supported foreign-key constraints?
I can understand the lack of support for triggers and stored procedures
since they are highly dependent on the database to create a wrap API
around them. But this is not the case for foreign keys.
This is specially important for open-source projects like
Redmine/Chiliproject and Gitorious where you shouldn''t be
2006 Jan 08
8
RaislsEdge - where to get latest javascripts ?
To play with RJS I just made a "rake freeze edge". But this copies only the
libs into vendor/rails and any attempt of "rake update_javascripts" fails.
But all the he required javascripts are there, at:
BASEPATH/vendor/rails/actionpack/lib/action_view/helpers/javascripts/
Except of prototype, they seem to have no version number, so I am asking
whether I should take those
2006 Mar 08
4
Creatulator: Before I go and make it myself, does this exist...
Basically, on thing that annoys me to no end is that I am constantly
having to add things to my model that could just be reflected out by
the active record. I use PortGres exclusivly, and I know that there
are ways to ask the database things like, "what is the primary key"
"what relation does this foreign key belong to" etc...
So what I am about to go and write myself is a
2007 May 29
22
Rails doesn't scale because RI/transactions in app not db!!!
Not that I have your attention! :P I''ve been having a discussion with a
respected colleague here:
http://phpbuilder.com/board/showthread.php?t=10340411 (Rails vs. PHP)
He''s basically saying that Rails won''t be able to scale because
referential integrity and tranactions are done in the application rather
than the database. Please read the referenced thread for much more
2008 Jun 05
23
unit test question
In development and production, I''ve got postgresql constraints that
prevent deleting a CaseManager if there is a Client that belongs to that
CaseManager.
In unit tests...and obviously in my testing db, those restrictions don''t
get added.
Is it wrong to test for deleting dependent records in unit tests?
Craig
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2006 Jun 04
11
Hosting images : DB or File System
Hi,
I''m developing an application where I''ll have to store a lot of images
coming from the users. And I''m still not sure if I should store them
in MySQl as blob or just store them on filesystem.
If I store them on filesystem, how to scale when I''ll have to have
multiple servers ?
Thanks,
Pratik
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