Displaying 20 results from an estimated 1000 matches similar to: "FK references in DBDesigner4?"
2006 Jan 10
2
DBDesigner4 to AR model (script)
Hi list,
I have hacked together a small script to generate an ActiveRecord model
from a DBDesigner 4 (fabForce.net) model file. Take it apart and feed it to
the pigs ;).
the article:
http://tua.ch/ruby/current.html
and the script:
http://tua.ch/ruby/dbmodel/compute_model.rb
best of whishes for the new year,
kaspar
code manufacture & ruby lab at http://www.tua.ch/ruby
2010 Aug 20
2
Determining the length of unique items in a vector
Dear all, let suppose I have following vector:
> dat1 <- c(rep("asd", 5), rep("xyz", 12), rep("erd", 17))
> dat1 <- dat1[sample(1:length(dat1), length(dat1), replace=F)]
> dat1
[1] "erd" "xyz" "erd" "asd" "asd" "erd" "xyz" "asd" "erd" "erd"
2001 Nov 02
1
png and jpeg libs for Solaris
I'm also having trouble installing R 1.3.1 on Solaris and getting png
and jpeg support.
It looks like perhaps the png and jpeg libraries I installed weren't
built with all the support R needs.
If that's the case I'd appreciate confirmation. Or perhaps there's
something else I can do?
(with all the details I've included this message is rather long)
Thanks
-Don
I did
2002 May 22
0
Problem installing tcltk on Solaris
I have built R 1.5.0, and tcl and tk 8.3.4 from sources on a Solaris
2.7 machine. All _appear_ to build successfully. tcl and tk pass
their test suites. They were configured to build shared libraries
(though I also tried it with tk not shared).
When I try to use tcltk, I get this error message:
> library(tcltk)
Error in dyn.load(x, as.logical(local), as.logical(now)) :
unable to
2006 Mar 11
2
assignment of parent ID in child''s fk field
When I create a child record I''m not automagically getting the parent ID put into the fk field. Does object.new take parameters that allows me to do that as part of the AR record creation? Or do I need to do it separately? Or am I missing the boat altogether ;-)
Thanks,
Bill
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2006 Jan 10
0
bug? : STI and :include => fk and class_name MUST be specified
I suspect this is a bug. Or a limitation.
Problem:
----------------
When you include a STI class in a ''find'' :
@results = Result.find :all, :include => :event
, you are forced to specify the fk and the class name :
belongs_to :event , :class_name => "Event", :foreign_key =>
"event_id"
.
Full code:
-----------
class Event <
2007 Jan 31
0
radio buttons => What if the value is a FK?
Hi:
I have radio buttons like this in my view:
<%= radio_button :goals, :goaltype_id, ''Recurring'', { :onclick => "new
Effect.SlideDown(''recurring''); return false;" }
%> Recurring<br />
<%= radio_button :goals, :goaltype_id, ''One-time'', { :onclick => "new
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 May 26
0
has_and_belongs_to_many with fk constraints?
Hi folks,
I''m wondering if it''s possible to use foreign key constraints on the join
tables of a has_and_belongs_to_many relation. Specifically, I get this
error when I try and delete a model I''m using, named saved_search, which is
many-to-many with neighborhoods. Any ideas? Thanks for any help. :-)
-Eric
Code:
@saved_search.destroy
Error:
Mupdate or delete on
2006 May 28
1
ActiveRecord: FK constraints problem
Hi all.
I have has_and_belongs_to_many association between models: Section and
Content.
class Section < ActiveRecord::Base
acts_as_tree
has_and_belongs_to_many :contents
belongs_to :default_content, :class_name => ''Content'', :foreign_key =>
''default_content_id'', :dependent => :nullify
end
class Content < ActiveRecord::Base
belongs_to
2006 Aug 23
1
problems with Oracle: FK, triggers
Hi All!
Is anyone working with Oracle on Rails? What about testing? I will be
very happy if you can help me:
1) When I run rake test:unit it removes all my sequences in test
enviroment. And I get an error like "OCIError: ORA-02289: sequence does
not exist" But when I run rake db:test:clone_structure I can see all
sequences again. Where is a problem?
2) How I can take proper
2007 Jun 09
7
create 2 fk referencing the same table
Hi everyone! I have a problem with defining 2 fk referencing the same
table. I have a Program table and a Team table. The Program should
have an away team and a home team fk. From my understanding, "the fk
column should be named after the class of the target table, converted
to lowercase, with _id appended". But, in my case, I have 2 fk
referencing the same table. How can I do this?
2006 Mar 15
4
[NQ] How to set an initial FK for a new item of something?
Hi all,
running into a little problem here. I''ve a list of things
with a "New thing" link beneath it. When you click that link,
obviously, a new thing shall be created. Now, that works pretty
fine for things that don''t have foreign keys, but for things that
do it crashes, since there is not yet a thing.other_thing.name
available.
I suspect you can somewhere in
2009 Oct 08
6
Eager Loading a Relationship That Has No PK/FK
I''m attempting to wrestle an old DB into Rails.
This relationship is giving me trouble:
class Show < AR::Base
has_many :segments
end
class Segment < AR::Base
belongs_to :show
has_one :media #this has no PK/FK relation
end
A Segment is "linked" to Media by Media.name, which is the result of
concatenating Segment.name and Segment.part. As I said there are is no
2010 Jan 27
2
RMySQL - Bulk loading data and creating FK links
I have a table (contact) with several fields and it's PK is an auto
increment field. I'm bulk loading data to this table from files which if
successful will be about 3.5million rows (approx 16000 rows per file).
However, I have a linking table (an_contact) to resolve a m:m
relationship between the an and contact tables. How can I retrieve the
PK's for the data bulk loaded into
2002 Nov 27
5
multi OS bootable CD, ISOLinux, ERD Commander problem
Hello all, I plan to make an (emergency) multi OS bootable CD which
contain:
- Win98 boot floppy (create from Win 98 control panel, add remove
program)
- WinME boot floppy (create from Win 98 control panel, add remove
program)
- Linux boot disk
- Win NT boot disk
- Win 2000 recovery console
- Win XP recovery console
- Winternal Administrative Pak (ERD Commander etc)
I am new to Linux and feel
2006 Sep 16
1
Wondershaper Errors
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Hi all!
when I activate wondershaper on my dsl connection (pppoa vc mux), i get
three errors:
# sh -x /usr/sbin/wshaper ppp0
+ /usr/sbin/xmlstarter setenv tc_downlink
+ DOWNLINK=
+ /usr/sbin/xmlstarter setenv tc_uplink
+ UPLINK=
+ [ -z ]
+ cat /proc/avalanche/avsar_modem_stats
+ grep Connection Rate
+ awk {printf("%d", $8)}
+
2008 Aug 28
3
[LLVMdev] Visual C++ 2008 Build from trunk
I'm trying to build the sources from the svn trunk using VC2008, and I'm
running into some problems. First, I have no idea what the configure project
is for, and it fails with a manifest related error (the project lacks any
.c* files anyway). This causes an avalanche of problems, initiated by
TableGen not being able to build. Has anyone been successful in getting the
LLVM libs to build
2012 Feb 05
1
[PATCH v3] Add virtio-scsi to the virtio spec
Hi Rusty,
here is the specification for a virtio-based SCSI host (controller, HBA,
you name it) so that you can apply it to the spec document and publish it.
I changed the index from 7 to 8 to account for the rpmsg device,
and added a feature bit to tell the guest in advance whether the host
supports hotplug. Otherwise there is no change from v2.
Paolo
--- virtio-spec.lyx.saved 2011-11-29
2012 Feb 05
1
[PATCH v3] Add virtio-scsi to the virtio spec
Hi Rusty,
here is the specification for a virtio-based SCSI host (controller, HBA,
you name it) so that you can apply it to the spec document and publish it.
I changed the index from 7 to 8 to account for the rpmsg device,
and added a feature bit to tell the guest in advance whether the host
supports hotplug. Otherwise there is no change from v2.
Paolo
--- virtio-spec.lyx.saved 2011-11-29