Displaying 20 results from an estimated 1000 matches similar to: "one to many question"
2007 Sep 18
2
Making attachment_fu polymorphic
I am working on a small model mixin called attachment_kung to make
attachment_fu polymorphic, so you no longer need a different table and
Model class for every associated attachment (Productimage, Ad_doc,
etc). All you really need is one model and table to handel all your
attachments - in some cases, anyway. I have the code working, but have
run into one small hitch that I can''t seem to
2008 Sep 29
1
has_one :through with :source. How to alias association?
Hi to everyone,
I have the following models:
class Attachment < ActiveRecord::Base
has_attachment :content_type => [:image, ''application/pdf''],
:max_size => 3.megabytes,
:path_prefix => ''../private/attachments'',
:storage => :file_system,
:processor => :rmagick,
2006 Feb 10
3
[Req] polymorphic associations howto
Hi people,
I''m looking into polymorphic associations as a way to cleanup some
messy parts of my code. I think they will allow me to do exectly what
I need, but since there''s little to none written on this subject, I''d be
delighted if someone could shed some light on this. Especially what
the different options and needed table structures need to be.
Thanks,
-
2007 Oct 09
5
Backticks wrapping SQL values in polymorphic associations...
Hopefully the subject line didn''t scare you. That said...
I have a simple polymorphic relationship (is that possible?):
class Part
has_many :attachments, :as => :attachable
end
class Attachment
belongs_to :attachable, :polymorphic => true
end
Calling Part.find(:first).attachments yields this SQL error:
ActiveRecord::StatementInvalid:
Mysql::Error: Unknown column
2006 Jun 25
2
how to write the codes in view?(newbie question)
Hi.
I have two tables and want to join them.
<genres>
id
genre_name
genre_order
<links>
id
genre_id
name
symbol
url
order
display
etc
The code of links_Controller is like below.
def list
@links = Genre.find(:all,:include => :link)
end
Below is the mysql log.
SELECT genres.`id` AS t0_r0, genres.`genre_n
ame` AS t0_r1, genres.`genre_order` AS t0_r2, links.`id` AS t1_r0,
2006 Feb 15
2
Polymorphic joins work one way, but not the other
I''ve been using polymorphic joins from edge rails based on about 5 lines
of advice Rick Olson gave me over IRC. There''s some sparse documentation
popping up but it seems to cover a somewhat different case.
Anyway - I pretty much got it to work - save for one detail. Here''s what
I have:
class Event < ActiveRecord::Base
belongs_to :attachable, :polymorphic =>
2008 Oct 29
5
Polymorphic Associations with inheritance
I have two models, Article and Post, that has many Comments. However,
both Article and Post are inherited from a BaseContent class like so:
class Article < BaseContent
has_many :comments, :as => :commentable
end
class Post < BaseContent
has_many :comments, :as => :commentable
end
and here''s my Comment model:
class Comment < ActiveRecord::Base
belongs_to
2011 Oct 26
6
Add an index to a form
Hello,
I''m having some trouble with forms, my app allows to enter data by
using a multi-step form that has 7 steps.
There are 3 steps that may let the user to add 1 form, for example
there''s a step called "children"
and that children has the following fields:
* name
* age
* gender
but one father may have more than 1 child and I''m adding another form
with
2011 Mar 23
1
using R variables in RMySQL query
I have the following function
myGetstockdataMySQL <- function(startdate, enddate, ticker) {
con <- dbConnect(MySQL(), user="blahblah", password="blahblah",
dbname="blahblah",
host="localhost")
rs <- dbGetQuery(con, "SELECT price.close FROM price INNER JOIN stocks ON
stocks.stock_id=price.stock_ID
WHERE (price.date_holding BETWEEN
2013 Apr 03
1
validates uniqueness scope allow_blank/allow_nil -> validation error
I have this in a model:
class GenreBadge < ActiveRecord::Base
belongs_to :game, counter_cache: :genre_badges_count, touch: true
belongs_to :genre
validates :game_id, uniqueness: {scope: :genre_id}, allow_blank:
true
end
When I get one existing genre badge
genre_badge = game.genre_badges.first
genre_badge.game_id = nil
genre_badge.save!
It creates an validation exception:
2006 Sep 22
2
possible to create polymorphic relationship with STI models?
I would like to associate a ‘product’ model with 3 models inherited from
‘image’: part, action and accessory.
I have it working with Has_many :through relating products to images
through attachments, I then have to determine the ‘type’ of the STI
extension. This means i have to go product.images. While this is ok, i
can see it getting tricky when i want to go products.images <<
2008 Jul 30
4
AssociationTypeMismatch: Genre expected, got String
Hi all
I have the following 2 models:
class CompactDisc < ActiveRecord::Base
belongs_to :genre
end
class Genre < ActiveRecord::Base
has_many :compact_discs
end
I have created a select box for my form so I can choose a genre for
every compact disc:
<p>
<b>Genre</b><br />
<%= f.select :genre, Genre.find(:all).collect{|p| [p.name, p.id]},
:selected =>
2008 Apr 11
1
polymorphic associations wrong when used with inherited class?
Consider the following:
class Event
belongs_to :event_object, :polymorphic => true
end
class Asset < ActiveRecord::Base
end
class EventedAsset < Asset
has_one :event, :as => :event_object
end
EventedAsset.find(:first).event generates the following SQL:
SELECT * FROM `events` WHERE (events.event_object_id = 1 AND
events.event_object_type = ''Asset'') LIMIT 1
2009 Mar 18
4
Search Results into new table
I have a search form on my rails site. once the a user has entered a
query it displays the results in a table with an extra field button so
it can be added to there own portfolio called add to my stocks.
How do i get the data for the stock they want to add and put this into a
new table called mystocks.
Is using a form submit button the right choice?
Any examples much appreciated
Regards
Nick
2007 May 29
2
OpenVox A400P01on thin client?
Hello,
I'm thinking of ordering an OpenVox A400P01 (A400P + 1 PORT FXO Bundle)
for use in a old IBM 8364 thin client:
http://www.openvox.com.cn/products_detail.php?genre_id=9&id=28
http://silicon-verl.de/home/flo/software/netstation-8364/
Has someone already used this hardware with Asterisk, especially on a small
piece of hardware like this, and could offer some feedback?
Thank you.
2007 Sep 23
3
Connecting a row of an unknown table to another row of an unknown table
Hello all,
I''m currently designing a web app in Rails that lets me keep a directory
of free/opensource computer games. Each game has attributes like name,
website, review, etc., but each game can also be associated with a set
of genres and gameplay elements. The main three tables I''m working with
are "games", "genres", "elements",
2006 Apr 23
1
checkboxes for filtered search
I have a page that renders a series of about 20 checkboxes on the
left hand side with content on the right. These checkboxes are
created from a DB and that part is all working well.
What I want to do is have a user click on a checkbox [genres] and
have the content on the right be filtered based on the checkbox
ticked. If a user clicks on more than one checkbox than only those
stories
2006 Apr 26
5
Best way to split forms into steps?
I have a form with about 30+ fields, which the client is wanting to
separate into 3 pages/steps - just wondering what is the best way to go
about this, specifically remembering data entered, from one page to
another, and making sure the various bits of data are validated
correclty, error messages outputted etc etc...
is there a best practice method for doing this?
--
Posted via
2012 Sep 08
3
Polymorphic has_and_belongs_to_many association
Hi,
I''m currently having the situation where I have to implement a polymorphic
has_and_belongs_to_many by introducing an in between model that handles all
the "has_many :as" and "belongs_to :polymorphic" association
implementations... and is not doing anything else. Thing I don''t like it
here is, I am unnecessarily loading AR instances only to execute SQL
2007 Oct 11
1
OpenVox A400P01 not detected
Hello
Has someone used the OpenVox A400P01 (ie. a supposedly
Digium-compatible A400P board with a single FXO module
www.openvox.com.cn/products_detail.php?genre_id=9&id=28) successfully?
I've put it in an older PC with a Gigabyte GA-7ZX motherboard, then a
more recent PC with an Asrock K8NF4G-SATA2: dmesg returns nothing :-/
Is there something specific that needs to be done in either