Displaying 20 results from an estimated 20000 matches similar to: "Rails 4 "belongs_to: record" association doesn't work"
2013 Jul 21
4
how to use activemodel collection.build for a has_many :through association
Hi all,
In my controller I am doing the following to populate a nested form for a
has_many through association:
def new
@specification = Specification.new
Component.find_each.each do |component|
@specification.component_specifications.build(:component_id =>
component.id)
end
The idea being whenever someone creates or edits a form, it will be
populated with all
2013 Nov 10
3
accepts_nested_attributes_for how, example
I have following tables with following models:
users(id, role_id) *has_many :entries*
categories(id, category_name) *has_many :entries*
entries(id, category_id, user_id) *belongs_to :user, belongs_to
:category, has_one :storage*
storages(id, title, content, entry_id)* belongs_to :entry*, *has_one
:vote*
votes(id, count, storage_id) *belongs_to :storage*
Now,
2006 May 17
2
Association data clobbering (foreign keys too?)
Can someone please confirm or correct the following statements?
If I have the following tables
create table as (id int, [...], b_id int);
create table bs (id int, [...], a_id int);
create table as_bs (a_id int, b_id int);
and the associations woould be defined like this
class A << ...
habtm :bs
belongs_to :b
end
so my Model A has a habtm collection of Bs *plus* a direct
2006 Nov 04
2
sql query in active record
hi all,
if i want to write a query select * from a,b where a.b_id=b.id in active
record
using joins,condition how can i write that
in docs i found for conditions you do by giving "?" and then the parameter
eg. a.b_id=?
but it takes b.id as string i.e a.b_id=''b.id''
i dont want that
any suggestions
thanks in advance
regards
gaurav
-------------- next
2013 Jul 11
1
Do I Edit the Migration Too to Show the Belongs To
Hi Everyone,
Do I edit the corresponding migration also to show the belongs_to (and the
has_many)? I have a many to many relationship where I am using the
"has_many :through" association. When I place in the individual classes the
''has_many :through'' and the ''belongs_to'' associations, do I also edit the
corresponding migrations to reflect those
2012 Aug 17
3
Rails doesn't validate create_model or build_model (has_one association)
I''ve got User has_one Shop. Rails is not validating when I tried
create_shop or build_shop, neither in the browser nor the rails console.
My code:
class Shop < ActiveRecord::Base
attr_protected :user_id
belongs_to :user
validates_presence_of :name, :primary_address, :city, :country_code,
:currency
end
class ShopsController < ApplicationController
before_filter
2013 May 31
11
A simple javascript alert not working
If I have a file in view /test called index.js.erb and in it a simple
alert("hello") shouldn''t that run when I go to /test/index? It doesn''t.
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2013 Aug 30
3
frozen? is defined by ActiveRecord
Hello folks
I got that error Pls tell me what''s wrong
frozen? is defined by ActiveRecord
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2008 Jul 04
2
How to make WHERE foo_id IN () query?
Hi,
There are 3 models:
A has_many :Cs
B has_many :Cs
C belongs_to A and B
I got a single object of A and an array of B objects. How can I get
all Cs that have a_id equal to object A.id *and* b_id that belongs to
an object in Bs array?
Regards
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2013 Oct 24
6
undefined method `paginate' for #<Class:0x567eb98> in Rails Tutorial
Hi,
I''m getting a undefined method `paginate'' for #<Class:0x567eb98> even
though I have gem ''will_paginate'' installed.
Inside the users_controller I have @users = User.paginate(page: params[:page
])
so I believe I set everything up to be correct.
Can you figure out why the method''s undefined, despite installing the gem?
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2006 Dec 30
2
search on multiple table
Hello,
I am trying to make a search, using acts_as_ferret on a
has_and_belongs_to_many relation :
class a < ActiveRecord::Base
belongs_to :b
has_and_belongs_to_many :c
Joboffer.find_by_contents( query +b_id:1 ) is working fine
but
Joboffer.find_by_contents( query +c:1 ) is not working
Here are the tables descriptions:
Table a have field : id, b_id
Table b have field : id,
2013 Oct 23
9
rails generate scaffold - ERROR
Hi,
I just installed ROR using the rvm using these instructions:
http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you/
Using Ubuntu 12 on VirtualBox
I''m trying to create a demo_app
rails generate scaffold User name:string email:string
gives me this error:
--
/home/natmanu/.rvm/gems/ruby-2.0.0-p247/gems/execjs-2.0.2/lib/execjs/runtimes.rb:51:in
`autodetect'': Could not
2013 Jul 25
3
User Role authorisation
Hello, Currently I am working on a app, so far I have User (with devise)
which are able to create projects. So, if user1 creates project A and
project B I want him, to be able to assign user2 with role admin on
project A, and user2 with moderator role on project B. I was thinking in
creating a UserRoleProject link table, is it a good idea? Or if not
please help me with some pointers.
The action
2009 Jun 27
6
User has many topics or subtopics
Hi,
So i have users in the system and i have topics. Topics also
have_many subtopics. What is the cleanest way to setup the AR
relationships if a user can either have_many topics or subtopics ?
Its basically a dual select box dropdown, where the second dropdown is
optional.
Is the best to have user_topics, and user_subtopics tables and manage
that way ? or combine into one table with STI
2013 Oct 04
8
is there any way to convert .xlsx to .xls
Hello Guys, does anybody know if there''s anyway to upload a .xlsx file and
then convert it to .xls file for later processing?
i''d like to use spreadsheet to write a new xls file but it doesn''t support
xlsx and the file is only importable with that format sadly.
I saw roo but I don''t know if there''s a direct way to do it.
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2013 Jun 21
7
IRB help
I''m new to Ruby. I installed Rails on Windows 8.
When I type mkdir in IRB, I''m getting this. I tried running the IRB as
administrator too, and still get the same result
irb(main):001:0> mkdir lesson2
NameError: undefined local variable or method `lesson2'' for main:Object
from (irb):1
from C:/RailsInstaller/Ruby1.9.3/bin/irb:12:in
2011 Mar 01
11
Did rails or shoulda go insane on the inflection of 'taxes'?
I have a model ''xp_jurisdiction_taxes'' which rails (3) created correctly.
Another model ''xp_jurisdiction_states'' has many :xp_jurisdiction_taxes.
In my spec I am using a shoulda helper to test the association but get the
following error. BTW, greped the whole project just in case and the string
''taxi'' exists nowhere.
1)
2011 Jul 11
36
has_many and belongs_to association
Hi ,
I want to test the one below but I got the problem
belongs_to :name, :class_name => "Phrase", :foreign_key => "name"
in my test
context "test"do
should have_many :phrases
end
in language.rb
belongs_to :name, :class_name => "Phrase", :foreign_key => "name"
error is
1) Failure:
test: check has_many and belongs_to
2013 Feb 25
3
ActiveRecord associations: design question
Hi guys,
In my Rails app, I have three models: A, B and C, with the following
relationships:
- B hasMany C
- C belongsTo B
I would like A to "has_one" instance of B+C. By that I mean A needs to
be linked to a specific instance of B AND a specific instance of C.
My first guess would be to create a fourth object, say B_plus_C that
would:
- belongs to B
- belongs to C
- belongs to A
Is
2010 Jun 24
11
Error: Trying to install passenger-install-apache2-module
i am trying to install
passenger-install-apache2-module
but it is giving me the error.
E: could''nt find the package passenger-install-apache2-module
Please help me over this.
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