similar to: How do YOU read/update HABTM?

Hello, I am very new to ruby and need to create my first HABTM with multiple select list.  I am having problems saving data in the middle(linking) table.  1. titles can have multiple categories  2. categories can have multiple titles Categories, titles and categories_titles tables are created.  ----- title_controller.rb--   def new     @title = Title.new     @categories =

I have a problem related with the HABTM relationships with checkboxes. I''ve got a profile and a service model, both related with has_and_belongs_to_many. The problem is that i can insert new data in the profiles_services table, however, i cant delete already existing data. What could be the problem? --~--~---------~--~----~------------~-------~--~----~ You received this message

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

Hello List, I''m a bit spent on this problem, and my code might be whack. I seem to be encountering a problem where the primary key on a join table is not being resolved correctly. I will elaborate after some code bits. I am creating the join table using migrations, and relevant model code is this: class Post < ActiveRecord::Base has_and_belongs_to_many :records

Hi guys, I have a habtm association working properly. My application consists of both a desktop and a mobile version. My mobile version is made with jquerymobile and I would like my checkboxes in the edit form to look like the checkboxes shown in http://jquerymobile.com/demos/1.0a4.1/#docs/forms/forms-checkboxes.html. My desktop code is the following: <%= check_box_tag

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

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

I''ve looked through the docs and the wiki and can''t figure out how to go about generating select options and the update function for an item that has a HABTM relationship. I have a ''parks'' table and the park model has a HABTM to the ''states'' table. On the park edit page, I''d like a multiple select box to appear with all states show,

I want to have popup menus and check boxes in my forms to let users select associated objects. In the form I''m working on, the object "belongs_to" another type of object which is selected from a popup menu. The id of the chosen object(s) for association is passed back in the parameter hash, but when rails creates a new object from this parameter hash, I get a

Hi. I get this error: ** ActiveRecord::ReadOnlyRecord ** When i try to update a table called characters_learning_abls that is a habtm relation between characters and learning_abls. The characters_learning_abls table looks like this: ** character_id int(11) unsigned learning_abls_id int(11) unsigned amount double ** Why cant i update this table though the **

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,

I have two ActiveRecord classes that point at each other with a "has_and_belongs_to_many" (habtm) relationship using a join table. The join table has an a few additional columns besides the _id columns. For those of you with the Agile Web Dev w/ Rails book, it''s exactly the same setup as the articles<->articles_users<->users example on p240. The habtm

Hello again, I have a table called line_items, with the following fields: id int item_name varchar() qty int conditions text I''ve made my LineItem model, and everything works as such (with simple text_fields).. Now I''d like for the conditions field to be a select_tag() with multiple choice possibility. I''m guessing I need some code to expand/restract the array for

I have an archive that can have 0 or more extra files associated with it. I would like to be able to edit the associated files info on the same page as the archive info. Listing the extra files info to the edit form is simple enough, but How do I form the text input fields for easy (or automatic) pick-up in the update? Or am I barking up the wrong tree here? -- Posted via

I''m terribly new to Rails, so bear with me. I have an application I am working on which deals with projects and subcontractors. There can be several subs on each project and each sub can work on several projects. I have my join table set up and has_and_belongs_to_many in both models. If I manually put data in the join table, this works in my show view: <% for subcontractor in

First post/newbie post... bear with me. What I''m trying to achive (music site): A system containing tracks and moods with a HABTM relationship. I''ve got all that set up and functioning in the admin environment - i.e. admins can apply a variety of moods to a particular track via a series of checkboxes. Join table works just fine. I''m currently stuck on allowing

Does anyone know of a good example somewhere of an implemention for adding records with HABTM relations that have lots of possibilities. The best way that I''ve seen it done is where you have two lists (multiple select lists) where you have the possibilities on the left and ones you''ve added on the right with arrows to add and delete items. But the only ways I know how to

Hello all, I have an Order object that has and belongs to many Products and has and belongs to many Loan Types. This is so I can select multiples of each in my order entry screen via checkbox groups. I''m having some trouble with saving multiple HABTM associations for a single model object; only the first HABTM association declared in the model will save during the initial @order.save

So having just learned how to do has_many :through as opposed to HABTM, and then, being concerned that I wouldn''t get it to work, I started thinking about these two approaches. It seems to me that the _only_ problem that the HM:T (has_many :through) approach solves that HABTM doesn''t is the issue of the potential collision of id columns between your join table and one of

Hello, I''m trying to implement a checkbox option function, but I''m having a problem in visualizing how it needs to be implemented. Let me explain. I have a model (User) and another model (Category). I want the user to be able to select multiple categories in the form of checkboxes and have this information stored in the db. User habtm Category and Category habtm User But