Displaying 20 results from an estimated 7000 matches similar to: "Prevent an object from being destroyed in HABTM relationship"
2006 Jan 19
0
Help with nested HABTM relationship
Hi,
I am trying to perform a query with ActiveRecord that I want to put into
a Rails application later. For now I just wrote it within a plain old
Ruby script for easier testing.
I am working with an existing database so I had to map some foreign keys
myself. As you can see from the models below, the database has a
structure of
Prospectlists <=habtm=> Contacts <=habtm=> Accounts
2017 Aug 28
0
regex - optional part isn't considered in replacement with gsub
"Please, consider that some SKUs have "-"
in the middle, for example: "PG-9021".
Then you need to include these in the list of patterns you gave. Try it
again -- this time with a **complete** list.
-- Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his
2008 Dec 16
1
Callback when objects connect as a habtm relationship
If Product and Category models are in a habtm relationship, i.e.
class Product < ActiveRecord::Base
has_and_belongs_to_many :categories
end
class Category < ActiveRecord::Base
has_and_belongs_to_many :products
end
I want a piece of code to be executed every time a product is connected to a
category.
Where do I put this code? Which callback (and on which model) will be
triggered?
Any
2017 Aug 27
0
regex - optional part isn't considered in replacement with gsub
Omar:
I don't think this can work. For example number-letter patterns 4),
5), and 6) would all be matched by pattern 6).
As Jeff indicated, you need to provide the delimiters -- what
characters come before and after the SKU patterns -- to be able to
recognize them. In a quick look at the text file you attached, the
delimiters appeared to be either "-" or " " (blank) and
2006 Mar 23
0
HABTM relationship
Hi all,
I''ve got the following two objects and the habtm relationship isn''t
putting records in the DB:
class Cse < ActiveRecord::Base
has_and_belongs_to_many :conditions
end
class Condition < ActiveRecord::Base
has_and_belongs_to_many :cses
end
I''m creating a Cse object and filling the collection of Conditions, then
calling save on the Cse object.
2006 Jun 14
3
Prevent duplicate HABTM associations
Hi,
I am trying to restrict duplicate has_and_belongs_to_many associations.
I tried to find support for a association validation for duplicates but
couldn''t find anything.
I understand I could use :uniq=>true on the model association but this
would only prevent it from displaying duplicates, I want to stop
duplicate associations being inserted in the first place.
I have a vague
2006 Nov 14
3
messed-up habtm relationship
Hi,
I have a many-to-many relationship between dishes and ingredients
class Dish < ActiveRecord::Base
has_and_belongs_to_many :ingredients
end
class Ingredient < ActiveRecord::Base
has_and_belongs_to_many :dishes
end
I have a join table dishes_ingredients
now when i access my_dish.ingredients, i get a list of what looks like
Ingredient objects, but the but they don''t have
2009 Oct 04
1
circular relationship - habtm
So I have 2 models: Picture and Comment.
Pictures have many Comments, but I''d like for users to be able to post
Pictures in Comments, so Comments will have one Picture (possibly).
This creates a kind of circular relationship it looks like, and the
only way I could think of to implement this is with
has_and_belongs_to_many. Am I right, or is there a better way to do
this?
2006 May 12
2
How to declare several HABTM-relationships?
Hello,
Is it possible to have several HABTM-relationships for the same object?
Example: Imagine I have 3 objects (classroom, student, teacher) and
define the associations for the student as:
class Student < ActiveRecord::Base
has_and_belongs_to_many :classrooms
has_and_belongs_to_many :teachers
class Classroom < ActiveRecord::Base
has_and_belongs_to_many :students
class Teacher <
2006 Jan 19
5
Multiple HABTM relationships with self ???
I need to have a table related to itself via a join table. Will HABTM
support this? That is:
class Recipe < ActiveRecord::Base
has_and_belongs_to_many :recipes, :join_table => "recipes_recipes"
end
More importantly -- how does RoR support MULTIPLE self-joins? I.e., to
relate the table to itself via multiple join tables.
SFAIK, HABTM won''t support multiple
2005 Dec 15
2
HABTM being tricky
I''ve just been bodyslammed by a problem with has_and_belongs_to_many -
as far as I can tell, if it doesn''t appear at the top of other
relationship definitions it doesn''t seem to work right. For example:
class Artist < ActiveRecord::Base
has_and_belongs_to_many :genres
has_many :albums
has_many :videos
has_many :cds
has_many :collections
end
..works fine
2005 Jun 03
1
sorting on a habtm relationship
I have two tables ("products" and "categories") that have a
has_and_belongs_to_many relationship, and I need to be able to
arbitrarily sort products in the scope of a category using something
like acts_as_list. Problem is, since each product can belong to
multiple categories, it doesn''t work to use acts_as_list and have the
"position" field be in the
2006 Jun 20
1
Preventing Dups in HABTM
I have a habtm that looks like:
report
has_and_belongs_to_many :subscribers
subscriber
has_and_belongs_to_many :reports
When I add a report to a subscriber, I have to run code like:
raise "already there, idiot!" unless
report.subscribers.find_by_id(subscriber_id).nil?
Is there a better way to avoid adding duplicative associations? has_many
:through seems like overkill for this
2010 Sep 01
0
Error on update_attributes with HABTM relationship
Hope someone can tell me what''s up, because this has me baffled.
I have an Image model, and a Provider model. Both are defined as
"has_and_belongs_to_many" relating to each other. In my image form
partial, I have a bit of AJAX generating the provider_ids array
dynamically from a provider AJAX search on the same page.
So for example, each time I click on a provider name that
2017 Jul 19
0
[ANNOUNCE] libdrm 2.4.82
Anusha Srivatsa (3):
intel: PCI Ids for S SKU in CFL
intel: PCI Ids for H SKU in CFL
intel: PCI Ids for U SKU in CFL
Ben Widawsky (1):
intel/gen10: Add missed gen10 stuff
Christian Gmeiner (1):
etnaviv: submit full struct drm_etnaviv_gem_submit
Dave Airlie (6):
amdgpu: sync amdgpu_drm with kernel.
drm: update drm.h to latest in drm-next.
libdrm:
2006 Mar 13
3
HABTM: two habtm''s between the same two tables
Imagine I want to track people, and the clubs that they belong to.
table people with columns person_id, person_name
table clubs with columns club_id, club_name
And I have the association table:
table clubs_people with columns person_id, club_id
Now I know how to do this habtm between the two, in order to associate
people with clubs that they belong to.
However my application also needs a
2006 Feb 28
8
HABTM count table
Hello,
I have a question about HABTM and counting records.
I have these models
class Sort < ActiveRecord::Base
has_and_belongs_to_many :reports
end
class Report < ActiveRecord::Base
has_and_belongs_to_many :region
has_and_belongs_to_many :subjects
has_and_belongs_to_many :sorts
end
And i would like to get a count like
@sort.reports.count
The problem is get this query:
2006 Jan 12
1
Saving habtm relationships and Rails 1.0
I know there''s a problem saving has_and_belongs_to_many relationships w/
Rails 1.0 in that only the first association is saved
(http://dev.rubyonrails.org/ticket/3213).
What are people doing about this? I guess I could move to using the
trunk release, but I''m hesitant because that might introduce a bunch of
unknowns.
Is there a workaround? For example, a way to explicitly
2006 Feb 20
0
No Magic for HABTM forms?
Hi,
I posted yesterday asking how to get form tags to reference the
associated objects in a habtm relationship. I was hoping for Rails
Magic, but it looks like Rails doesn''t have habtm magic beyond a
certain point.
Here was my solution for others who might have the problem. Also, I
hope someone shows me that there is a simpler way.
The Database Model:
class Registration <
2011 Jan 14
0
[Rail3] How to construct full-text search for habtm associations
hi all, i''m new to this group and currently using Rails 3.0.3 and meta_where
0.9.10.
i''m considering how to make a full-text searching feature to my project,
and my models, for example, should be defined like below:
class Group < ActiveRecord::Base
has_and_belongs_to_many :users
# :title (string)
end
class Comment < ActiveRecord::Base
has_and_belongs_to_many :users