Displaying 20 results from an estimated 3000 matches similar to: "odd habtm behavior? or is it me?"
2006 Aug 19
3
Special ruby language for describing sql conditions
I was brainstorming today about a smooth way to define conditions in an
sql query, when the numbers of attributes increase, so does the uglyness.
So instead of passing a hash, I thought you could specify the conditions
directly in code.
I hacked together some example code which actually turned out to work.
The result is concise and pretty beutiful.
def search(params)
Ad.find(:all) do
2006 Feb 14
1
Another HABTM Question
Hi there,
I have a question on what would be the best way to save a HABTM model.
A posting habtm categories, and a category habtm postings.
class Category < ActiveRecord::Base
has_and_belongs_to_many :postings
end
class Posting < ActiveRecord::Base
has_and_belongs_to_many :categories
end
In my blog_controller, where the actual posting is saved, is where I
think I''m
2006 Jun 05
5
adding habtm through migrations
Hello,
I''m stuck, I''ve got a model Product and would like to add a new model
called Category. Furthermore, I want to set up a many2many
relationship between the mentioned models. the problem is that I do
not know how to set the primary key in the categories_products table.
this is what I''ve got in my migration file:
create_table :categories do |t|
t.column :name,
2007 Oct 22
1
self-referential habtm: why are my keys null?
I''m trying to set up a directional self-referential HABTM to represent
an arbitrary semi-hierarchical structure; it works for any data
prepopulated into the db, but when I try to create a new relationship,
I just get NULLs in both key columns (or 0''s if I turn on the no-null
constraint).
Here are the migrations:
class CreateNodes < ActiveRecord::Migration
def self.up
2006 Apr 06
3
has_and_belongs_to_many find
Say I have a post model that has_and_belongs_to_many :categories, and a
category model that has_and_belongs_to_many :posts. So I have a
categories_posts table to do the join. That''s all find and dandy.
However I want to be able to find all the posts that belong to a
specific category.
I tried Post.find_by_category(:id) but that doesn''t work.
Does anyone have any insight?
2008 May 27
2
HABTM using two columns
Hi all,
I was wondering whether anyone could guide me to docu and code
examples how to create and use a has_and_belongs_to_many relationship
with a joining table where TWO columns are used to identify the
relation to TWO alternative tables.
Example:
table 1: mothers [mother_id, name]
table 2: fathers [father_id, name]
table 3: children [child_id, name]
joining table 4: children_parent
2006 Jun 28
0
habtm and multiple-option select boxes
I''ve got a fairly basic has_and_belongs_to_many setup, with a Business
model and a Category model. In the admin functionality for the Business,
I''d like to have a multiple select box showing all of the Categories, with
included ones selected, etc.
I''m stumped as to how to do it, though - it seems like there should be an
easy way, but I''m missing it looking
2006 Apr 09
1
select helper question
Hi there, I try to develop a medical application using ruby on rails.
There are many categories which can contain subcategories.
I defined the model like this:
class Category < ActiveRecord::Base
has_and_belongs_to_many :notes
belongs_to :parent_category, :class_name=>"Category",
:foreign_key=>"category_id"
has_many :sub_categories,
2005 Jul 25
2
acts_as_tree and traversing parent/child relationships
I am working on an Rails application that uses a pretty complex
category structure through out the site. I have defined a table to
house all the info and a FK to reference parents within the table
CREATE TABLE categories (
id int(11) NOT NULL auto_increment,
name varchar(50) NOT NULL,
parent_id int(11) default NULL,
constraint fk_category_id foreign key (category_id) references
2014 Mar 31
0
Unable to delete post in sample blog application
Hi All,
I am new to RoR and I am writing a small blog application. I have added a
Destroy / Delete link to the post index, but when I click this delete link
the show action is fired. The log seems to confirm this:
Started GET "/posts/2" for xxx.xxx.xxx.xxx at 2014-03-31 15:51:03 +0000
Processing by PostsController#show as HTML
Parameters: {"id"=>"2"}
Post
2009 Jun 22
5
has_many through , or habtm , using form
i think there ara two ways of relate products and categories ,
basically i want to fix one product(e.g hp dv7....) to some categories
(notebook,17"notebooks...)
i made a table named categorization(incuding category_id,product_id
fields) then in models i write these codes below
class Product < ActiveRecord::Base
has_many :categories, :through => :categorizations
2006 May 12
2
Has many through join table issues
I''m trying to wrap my caffeine soaked brain around has_many :through
following along at:
http://rails.techno-weenie.net/tip/2005/12/23/teaching_your_blog_model_new_tricks_with_has_many_through
I think my models are a little more complex than what fits this
narrative.
I have a directory of members, each member can belong to multiple
categories.
The category table references itself
2006 Apr 10
0
Inheriting data from one model to another
Hello
I''ve been struggling with something for hours that I thought would be
a simple job. Hopefully somebody can shed some light on what I''m
trying to do :o)
First of all I''ll explain what I''m trying to achieve. In a store
application I want to have products and product variations. A product
variation should inherit all of its properties from product unless
2006 Feb 24
2
how to better generalize a tree?
first some background info:
I have a blog application that has a comments table with the following columns:
id
parent_id
post_id
created_at
body
here''s my model:
class Comment < ActiveRecord::Base
belongs_to :post
acts_as_tree :order => ''created_at''
def print_children (options={})
before = options[:before] ? options[:before]
2014 Jun 09
0
How can I test my controller via rspec for something other than response.should be_success?
1) Right now this is just testing a successful response. However, since
I've gone and created a Post via FactoryGirl... how can I test the
@post.id equals one of the id's being returned by the get: index json?
describe Api::V1::PostsController do
context 'Post' do
before(:each) do
@post = FactoryGirl.create(:post)
end
context '#index' do
2007 Aug 23
1
validation across controllers
Hello, here is my issue with an exemple!
Typical example: post and comments in REST design
-------------------------------------------------------------------------------------------------------------------------------------
class PostsController < ApplicationController
...
def show
...
@comments = @post.comments.find(:all, :order...blabla)
end
...
end
2012 Feb 07
6
nested route not receiving :id parameter within controller spec
I''ve got a share method in my controller, and I have the following spec:
describe PostsController do
describe "#share" do
it "doesn''t blow up" do
post :share, :id => @post.id
end
# ... etc
And... It blows up!
Failures:
1) PostsController#share shares
Failure/Error: post :share
2006 Jul 18
1
Bad values for acts_as_nested_set?
I moved from acts_as_tree to acts_as_nested_set because I need the
all_children method.
I''ve seen an alternative way to add this method to acts_as_tree here:
http://www.chuckvose.com/articles/2006/05/24/recursive-children
But I''d prefer to use the more efficient way of acts_as_nested_set (and
not to have to revert to my old code).
Anyway, here''s my issue: if I
2006 Jun 07
1
How do YOU read/update HABTM?
In my mind, it should work like this:
<%= select ''item'',
''category_ids'',
Category.find(:all).collect {|c| [c.name, c.id] },
{},
{:multiple=>true, :size=>20} %>
Then Rails should automatically populate and update HABTM on that. As it
is now, the above won''t work (I created a getter in item''s model that
returns an array of
2009 Jan 15
4
HABTM and Check Boxes (Yet Another thread on this)....
Hi there,
it''s an afternoon that i''m destroying my head on this, and i''ve decided
to ask to you all .
I''ve got to do some check box lists for a modified substruct version i''m
doing, right now, i''m interested to insert a list of categories of
interests into a customer sheet
i''m using the substruct plugin version, wich stays in the