similar to: relationship woes

class PgmUpdate < ActiveRecord::Base has_many :pgm_visits ... class PgmVisit < ActiveRecord::Base belongs_to :pgm_update ... I am trying to make sure that none of the visits in PgmUpdate overlap start and end dates. Should this validation exist in PgmUpdate or the controller? It seems natural to put them in PgmUpdate, but I must force the relationship together because

Hi! If i have 2 tables i.e. product and images and product has_many images, image belongs_to product - how to create _form.rhtml, new/create and edit/update methods in product controller, so in a single form i can add one product and MANY (let''s assume for now that this number is fixed) images for this product? Pleeeeease help me :) -- Posted via http://www.ruby-forum.com/.

I am trying to optimize some methods in my model so they don''t repeat CPU intensive algorithms every time I call the method in the same request/response cycle. Eg. ================ def invitations all_pgm_updates.find_all do |update| update.invited? end end ================ I want to do something like: ================ def invitations if @invitations.nil?

I have a model where I need to calculate one of the fields when I create a new instance. It seems to me that I should do this in the model code and that I should override the new and/or create methods. Is this the right approach and, if so, how can I execute the existing method but add on my calculation? I want something like: def create -Do the original create first- field =

hey guys, Does anyone know why the french letter "?" is displayed as a question mark "?" inside an <h1> tag ? -- Posted via http://www.ruby-forum.com/.

Given the two tables Parent, Child where Parent has_many children: If I don''t save parent first then it seems that child.parent will not be assigned automatically if I call parent.children << child . Must the parent record be saved before I call parent.children << child ? If I must save Parent first then can someone explain to me how I can call parent.valid? before it

Ok, what I want to achieve is: http://<mydomain>/admin/products calls app/controllers/admin/products_controller.rb According to Agile Development with Rails this should work. I executed the follwing commands: rails myproj cd myproj script/generate controller Admin script/generate scaffold Admin::Product this creates app/controllers/admin/products_controller.rb all the views &

I upgraded to Rails 1.1 (ruby 1.8.2 and ruby 1.8.4 on RHEL 4 using webrick or fastcgi) and all of a sudden I get this hitting a controller: wrong number of arguments (1 for 0) RAILS_ROOT: script/../config/.. Application Trace | Framework Trace | Full Trace /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.12.0/lib/action_controller/base.rb:379:in

On my host I run my lighttpd instance bound to a specific port and my hostname is mapped to this port (I''m not exactly sure how this is accomplished, but it is lighttpd also listening on port 80 which handles this for me I believe). A redirect from rails includes my local port number in the request, so that it shows up in the address bar. I prefer people not to see this - I

Hey, I have users entering URLs into my app, is there anyway in which I can check to see if the URLs actually point to something before saving the user input? Maybe a kind of ''ping''-action that returns true on success? (btw: does anyone of a tentative release date for Rails1.1? I''ve been slobbering all over my RailsRecipes book and I can''t wait! Also, Scott

I have a pretty complex model with many modules and I have been trying to keep it clean, but I find that loading the model in development mode using WebBrick is much more lenient than production mode with lighttpd/fcgi. For instance, if I neglect to create a dedicated file that declares the module then I run everything in development mode it works fine, but as soon as it is deployed I

I got Capistrano working with one of my Rails projects, but I intend to use identical models in a second project. I originally was using a symlink to point to the other models, but I want to be able to use the same ''rake deploy'' command for the two apps individually so I don''t have to deploy both together all the time. Any ideas? -John -- John Smilanick

I have a class that has_many :visits, I want to search through the visits to get only ones that are committed: I thought it would be as easy as: ================== visits.find_all do |visit| visit.coming? end ================= but this always returns the entire list of visits. The only way to get it to work is to put the visits into a new array first: =================

Hi, I''m trying to save multiple records of the same model in one go. Which is no problem at all. Problem starts when I want to introduce error handling. The problem is that no record should be saved when one of the records contains an error. I tried it as follows: session[:infos].each do |info| @quest.name = info["name"] unless @quest.valid? @errors_found = true

I''ve asked this in various ways but I can''t seem to get much traction - my guess is because not many people are doing this. I am working in a controller/views called placements. Placements belongs_to :client I have a clients model/table - clients has_many :placements in placements/find...this works fine... <%= text_field_with_auto_complete :placement, :clwholename, {} %>

Hi, I cannot seem to find out how to pass in a value to a partial. Can anyone help me? What I am doing(in the code below) is calling a function in my controller called setobject. This function just redraws the partial. I want to be able to change the value @objectname, redraw my partial and have it be able to use that value. The first the page is drawn it works, but when i call setobject it

I''ve created a look-up table in my database that currently has 4 rows. I want to access these as constants in the application because that''s effectively what they are. I tried this... class StockRuleLevel < ActiveRecord::Base has_many :stock_rules SITE = find(:first, :conditions => "type_code = ''site''").id MAKE

I have to do user authentication for a project i''m working on. The trick is they want me to use the existing LDAP database for it. Does anyone know how to authenticate using LDAP in RoR? ~Rahul

I am using the Openbase adapter and have had a similar glitch here and there, but after I go into production I consistently get an error on one page. ActionView::TemplateError (NoMemoryError: failed to allocate memory: SELECT * FROM ... I cannot track down the exact location of the error, but the production log says it was around:

My application needs to know if a user is an administrator, for security and aesthetic reasons. At the moment, I store true/false in the session by doing the following at login: session[:user_is_admin] = authenticated_user.is_admin? Is this OK to do? Or should I really be doing the following every time: User.find(session[:user_id]).is_admin? (user_id is always in the session too) Is there