Displaying 20 results from an estimated 4000 matches similar to: "Order records based on number of children"
2006 Apr 04
3
How to use in_place_editor_field ?
Hello, I really don''t understand how to use in_place_editor_field
In my controller :
class Admin::CategoriesController < Admin::BaseController
in_place_edit_for :category, :title
def list
@categories = Category.find_all
end
end
In the view list.rhtml
<% @categories.each do |c| %>
<td><%= in_place_editor_field :c, c.title %></td>
# snip
<%
2006 Mar 24
6
Should counter_cache fields be saved in the database?
As far as I can tell, the counter_cache option on a belongs_to model
doesn''t actually save anything in the database. For example, I have
the following models:
class Parent < ActiveRecord::Base
has_many :children,
:conditions => "deleted_at IS NULL"
end
class Child < ActiveRecord::Base
belongs_to :parent, :counter_cache => true
end
With the following
2008 Jan 02
1
wants to get all parents with no children, etc
To all:
hi,
i have implemented the associations in my models
so i have a Parent model that has many Children model
but i need to get a list of Parents that do not have children
or
Parents that have just 2 children
or Parents that have children whose name is ''James'', or ''Sarah'', or
''Betty''
or Parents whose children do not have names like
2007 Jan 17
2
rake test and validates_inclusion_of
Hello,
I am just starting off with Rails, so I apologize in advance if there
is a terribly obvious answer to my problem. I''ve done some searching
and found similar problems to my own, but nothing which yielded a
solution.
I have a handful of models that I am unit testing. The tests for each
unit run successfully, but when I do a rake test, many of the tests
fail.
The assertions that
2007 Feb 14
3
eager loading parents and children (acts_as_tree)
I am struggling with how to do eager loading of an acts_as_tree model.
If the model Stuff acts_as_tree I know I can do this to get children as
well:
Stuff.find(:all, :include => :children)
But what if the model I am including is the one that acts_as_tree?
For example, say Picture belongs_to Category. Category acts_as_tree and
I want to get all pictures that are members of a category that
2007 Aug 09
7
Integrating polymorphic models into controllers views? how?
I''m having trouble trying to get this to work.
How the heck do you get a polymorphic controller to work? Especially
integrating it with a view?
Let''s say that we have shows, and episodes, then comments.
A show has many episodes, an episode has many comments.
the route is /shows/1/episodes/1/
Now to add a comment to that episode, how would I do it? Let''s say
that the
2006 Apr 04
8
very bold internet explorer only website
Hello everyone,
It is offtopic, but i''m so surprised :|
I was looking for some filipino martial arts videos through google
video, and came to this link
http://redcornerboxing.net/
I use Firefox 1.5 on windows.
I never seen *such* bold IE only website in my life.
olegf
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2006 Mar 25
2
acts_as_tree wierdness with children.count and children.size
i am making a category tree and i iterate over the category using my
counter_cache however it would show a different number than what was
actually being represetned in the tree.
Here is an example
cat.children = [cat2, cat3]
puts cat.children.size 2
puts cat.children_count 2
cat4.parent_id = cat.id
cat4.save
puts cat.children.size
2006 Feb 20
18
Win XP/ Mysql Problem
I''ve searched everywher for an answer to my problem, and the only thing
I''ve found is people with the same problem. I''m hoping someone has an
answer here:
I''m working through the agile web developement with rails book and when
I goto scaffold the products table I get the following message.
exists app/controllers/
exists app/helpers/
exists
2006 Apr 27
4
select item based on previous select list selection?
So I have a select list with a list of items. When a user selects an
item, another select list should have its default selected item set to a
specific item (the default associated with the first select list).
This is in a form to create a new task. The first select list is a list
of parent tasks. When one selects the parent task, the clients select
list must default to the same client as its
2006 Feb 23
3
has_many: inserting children when inserting parent
disclaimer: am in the midst of my first ruby/rails project
I have a situation where I want several child records to be created when
a new parent record is created. The following represents my first stab
at coding it, am I on the right track?
Here is the model:
parents
----------
id
name
children
----------
id
parent_id
name
class Parent < ActiveRecord::Base
has_many: children
end
2008 Jul 11
1
Using custom routes to handle new nested resources
I have a couple of resources, one nested in the other, such that my
resource spec in routes.rb is:
map.resources :parents, :has_many => :children
This will generate a route for a new child that assumes that the parent
has already been saved, something like:
/parents/:parent_id/children/new
But what if I want a route that handles the case where the parent
resource is also new, and thus
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
2007 Mar 27
7
Eager loading not working well for me
Man my app is causing me so much grief lately.
Okay let''s say I have:
class Discussion
has_many :posts
end
class Post
belongs_to :discussion
acts_as_tree
end
Then let''s say I grab a discussion object and try to eager load all of
its posts:
discussion = Discussion.find(:first, :include => [:posts])
Seems simple enough and it grabs an entire tree of posts. However:
2006 Mar 15
5
acts_as_threaded - help ???
Hi, has anyone successfully used the acts_as_threaded plugin with
postgresql?
I''m using rails 1.0 and ruby 1.8.4 on linux.
Following the screencast on
http://www.railtie.net/articles/2006/02/05/rails-acts_as_threaded-plugin ,
I got to where we''re ready to create our first post, having made the
changes to controllers/posts_controller.rb, views/posts/_form.rhtml,
2006 Feb 08
1
Many-To-Many w/acts_as_tree?
Guys,
I''m having a problem getting acts_as_tree working. It seems from the
Agile book (p. 255) that acts_as_tree only supports one-to-one record
relations, whereas I need many-to-many support. In other words, looking
at the picture at the top of page 256 where where only 1 id is linked to
1 parent_id, I need multiple id''s linked to multiple parent_id''s - for
2005 Apr 19
3
Rails 0.12.1: No major update without a bit of pain
There''s nothing like pushing a new major update in order to find bugs
in the code when its exposed to a couple of hundred working
applications. Thankfully the fixes were almost as swift as the reports.
In any case, you''ll _definitely_ want to upgrade to 0.12.1 right away.
There''s a good handful of fixes for both Action Pack and Active Record
(mostly concerning the
2006 Jan 05
2
Confused...
Ok,
So, I''ve got two data tables associated through a foreign key.
class Child < ActiveRecord::Base
belongs_to :parent, :class => Parent, :foreign_key => "parent_id"
# also has attr1, attr2
end
class Parent < ActiveRecord::Base
has_many :children, :class => Child, :foreign_key => "parent_id"
end
So, I''m trying to build the new/edit
2006 Feb 02
3
acts_as_family_tree
For a project that I am working on I need to have a family tree. This
means that instead of having one parent each item has at most two. As
far as I know acts_as_tree only allows one parent_id. Any suggestions
on how to make a "acts_as_family_tree" ?
Thanks,
Mark
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I am Mark Daggett and I approve this message.
2006 Mar 17
4
hidden fields
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Hi,
I''m a rails newbie trying to develop a blog application with rails. I''ve
some troubles to find the best way of automaticly set a field value on
update and creation of a blog item.
In fact my problem is very simple. I''ve a blog table with two column
named create_date an mod_date. And I''d like :
1 - that