Displaying 20 results from an estimated 1000 matches similar to: "has_and_belongs_to_many question"
2006 Mar 30
5
Heeelp - no idea what''s going wrong.
I''m working on a simple CMS. The main data type are "listings" a listing
habtm (has_and_belongs_to_many) categories and subcategories.
Subcategories belong_to categories. Subcategories are basically the same
as categories, but they are treated differently in a few situations.
The problem is, I can''t seem to write the view/controller/model code
that allows me to
2009 Oct 15
10
AJAX - how to have multiple select form sets implemented?
hi, there :)
Consider a blogging application whereby a user is trying to add a new
blog.
He/she has to select a category. Upon selecting a category from a drop
down box, a new sub categories drop down box will be created (hence an
AJAX call). Got this implemented and it''s ok.
Now, let''s assume that a given blog can have multiple categories (and
subcategories).
For example, a
2006 Apr 15
8
Inheritance in Rails - I need some help
I''ve got a model, "category" and another model "subcategory." Each
subcategory belongs_to a category, and a category has_many
subcategories.
What I need to do is set it up so that I can search Category and
Subcategory with one .find call. So:
Category.find(:all, <etc)
will find categories and subcategories.
Now, I believe this can be done by making
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,
2010 May 25
2
Site Navigation With Polymorphic Has Many Through
Hi, seem to keep running into a wall here. I can''t find any resources on
site navigation that can deal with any model being in the nav, allow
nesting, and can dynamically update.
So I thought about it for a while, and decided on a MenuItems class, which
contained the position of the child in relation to it''s siblings, where the
parent and the child were polymorphic. Then a given
2008 Apr 01
1
Navigation Problems
Hi,
I am having problems with my page. I have a banner and navigation bar in
controller_name.rhtml in app/views/layout. Can someone please help?
Thanks
In the navigation bar, I have the following links:
Category1
Sub-Category1
Sub-Category2
Sub-Category3
Sub-Category4
Sub-Category5
Sub-Category6
In the main content, I have the following links:
Sub-Category1 edit delete
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 Jul 23
3
Newbie: Display hierarchical Records in a view
Hi,
I have two models: category and subcategory. (one to many
relationship), and a controller ''home''
I''d like to display all the categories and their sub categories in the
view: home\index.rhtml.
I have a method in the ''home'' controller'' like this:
def list_categories
@categories = Category.find(:all)
end
This list all the categories
2006 May 07
2
Category and subcategories in database
I have a project I''m trying to decide if I want to use rails for. I''m new
to rails, so I''m not sure how easy it would be to implement something like
this using ActiveRecord. Here''s the situation:
Category > subcategory > subcategory > product
Category > subcategory > product
Some categories will have many subcategories, others few. I want
2006 Apr 11
2
Finding items from two models - then merging them
I have a model, listings. Listings habtm categories and subcategories,
which are seperate models.
What I want to do is search categories for certain items, like so:
@categories = Category.find(:all, :conditions => ["name LIKE ?",
"#%{:search_string}%"
and subcategories for the same:
@subcategories = Subcategory.find(:all, :conditions => ["name LIKE ?",
2005 Dec 16
2
HOW DO I populate options from previous option click
Hi,
I have a form with three drop down option lists. Currently each of these
contain full listings as instantiated in the controller on entering
the edit action. What I would like to do is filter the second list based
on what the user selected on the first and the third filtered to reflect
the second.
For example I have major_role, role and person_in_role = role is a
subset of major_role
2008 Dec 25
5
One question about Dynamic Select Menus
Hi all,
Merry X''mas first :-)
I have "Product","Category","Subcategory" 3 Model, and when new
"Product", I want to use "Dynamic Select Menus" just like Ryan
mentioned in http://railscasts.com/episodes/88-dynamic-select-menus
I have everything down. But when I visit the js file, I got following
error
Showing
2006 Mar 31
7
Checkboxes expand to show new options when checked?
I''m writing a simple CMS where every item ("listing") HABTM categories
and subcategories (which themselves belong_to a category). What I''m
trying to do now is create a UI effect for listing creation: when you go
to create a listing, only the possible categories will be shown, but
when you select a category a set of new categories will be displayed
like so:
Lions
2006 Apr 07
13
Pop up menus - any ideas?
I''ve got a menu in which I have all of my categories as links. Each
category also has subcategories. I want to set it up so when you mouse
over the category the subcategories will pop up (to the right of the
main list, but that''s just CSS). This is what I have so far:
<% for category in @categories %>
<a href="#"
2010 Jun 04
6
Ajax fails in IE8
hi guys,
I am testing a new optional funtionality in my site with IE 8 after
success with Firefox 3.6.3, chrome and safari.
The new functionality basically sees a "sub category" drop down list
get generated in my form as soon as a "Category" value is selected
from the "Category" drop down list.
I have been using the standard rails api such as observe_field, and
2006 Aug 06
1
Newbie: populate 2nd dropdown list based on user''s selection in 1st dropdown list
Hi,
I am creating a form that a user can post a message based on his
selection on category and subcategory. (A category has many
subcategories.)
How do I dynamically populate subcategory dropdown list when user
chooses a category from category dropdown list?
Thanks in advance.
--
Best regards,
Ming Ma
2006 Jun 03
2
Parent listing children.
My database is set up as Categories > Things associated by category_id
and has_many and belongs_to.
How would I go about listing all the categories and under each Category
is it''s children? Is there an easy rails way to do this - preferably
without using acts as tree? Any help is appreciated - thanks!
--
Posted via http://www.ruby-forum.com/.
2009 Mar 11
1
Reshape question.
This hopefully is trivial. I am trying to reshape the data using the reshape package.
First I read in the data:
a2009 <- read.csv("Total2009.dat", header = TRUE)
Then I trim it so that it only contains the columns that I have interested in:
m2009 <- melt(a2009, id.var=c("DayOfYear","Category","SubCategory","Sku"),
2006 May 16
7
svn-1.3.1 errors on intel mac on checkout
I just installed svn-1.3.1 from .dmg on an intel mac. I am getting ...
subversion/libsvn_wc/log.c:338: (apr_err=155009)
svn: In directory ''sr''
subversion/libsvn_subr/io.c:565: (apr_err=2)
svn: Can''t copy ''sr/.svn/tmp/text-base/README.svn-base'' to
''sr/README.tmp'': No such file or directory
Any one getting this? TIA for any help.
2006 Apr 14
1
Model extends and belongs_to another model - problem
I have a model, categories, and another model, subcategories. In my
current code these have no connection except for the fact that
categories has_many subcategories and a subcategory belongs_to a
category. But by necessity, I need to change it so Subcategory extends
Category; so that I can search both models with one command.
I was hoping it would be as simple as changing Subcategory <