similar to: Inserting the parent Id to the child table

What''s the difference between these two? Objective: Trying to display the addresses of the students that has "has_many" relations with addresses <td><% @student.addresses.each {|address| "Address: #{address.addr1}<br/>"} %> </td> ****** did not work <% end %> This code worked: <td><% @student.addresses.each do |address|%>

I have the following model structure setup. class User < ActiveRecord::Base end class Parent < User has_many :relationships has_many :children, :class_name => "Student", :through => :relationships, :conditions => "related_as = ''parent''" end class Student < User has_many :relationships

A while back, I had some doubts on the use of associations. I still haven''t got a satisfactory guidance so that I can spring ahead with the project. I am trying to understand from a ruby point of view on doing things. Basically I have a controller that gives me a list of students. And each student may have say home address and mailing address. Hence I can model as shown below. How do I

I am sure some of you can give me an insight into this. This is more towards the database design for the scenario below: Say for example, I have a person table and this person can have different address types. One could be Home and the other could be say Office. Should be model this Table people id fname lname Table addresses id person_id addr1 addr2 .... or Table people id fname lname

Hi all. I am wrting a small content management tool for my company and was trying to display some images from our file store shown below. <td> <img src="\\xx.xx.xxx.xx\xx\xx\xxx\abc.gif"/> The app was displaying the image when it is under the \public\images directory. Is there anything special we need to do to get a file from outside the root of the application? Any help

Considering an object with several has_many :through => associations, what is the ''best'' way to handle validations? As an example: class Student < ActiveRecord::Base # some attrbutes like # :name # :grade # relationships has_many :students_assignment, :dependent => :destroy has_many :assignments, :through => :students_assignment has_many

Hi, I am working on a table with name "addresses". However when I do a ruby script/generate scaffold Address, I am not able to access http://localhost:3000/addresses. I am getting the following error. uninitialized constant Addres This error occured while loading the following files: addres.rb How do I resolve this issue. Thanks Silvy MAthews

Some days back there was a mention about an open source image editor that people uses for application layout designing. I have forgotten about the name of that software. Can someone send me the link? Silvy Mathews

Hi All, View ******** <tr> <td><b>Student: </b></td> <td><%= text_field "student", "fname", "size" => 40, "maxlength" => 40 %></td> </tr> <tr> <td><b>Program: </b></td> <td><select id="student_program_id"

Can someone guide me the best possible way to read a PDF form fields. I have seen some references to the PDFWriter but not the reader. Any help appreciated. Thanks Silvy Mathews -------------- next part -------------- An HTML attachment was scrubbed... URL: http://wrath.rubyonrails.org/pipermail/rails/attachments/20060104/641bd399/attachment.html

Hi, Something that I have noticed is that every class that inherits from ActiveRecord::Base has a database table of its own. However what if I don''t want a class to have its own table, but to actually serve as a proxy to initialize other entries? For instance as an example, let''s have a form with the fields for "student name", "student id number",

Im having an issue that seems to only happen when trying to use a transaction. Ive used transactions many times in the past and Im at a loss as to why im getting the stack level too deep problem. SystemStackError - stack level too deep: actionpack (3.2.13) lib/action_dispatch/middleware/reloader.rb:70:in `'' I have a StackOveflow with more detail -

R-help group, I'm looking for some assistance on using an R-script to read STDIN from hadoop. Example, say I have two tables. One is a student table, the other is a class roster table (tables join on student_id). Student SAT score is in the student table, whether the student passed or not is in the roster table. So to determine if a student passed or failed based on their SAT score, I'd

Wow, got myself lost as *soon* as I left the hand-holding exercises in the books. I''m trying to set it up so when I click the (scaffold-generated) ''destroy'' link on one (of a list) of parent MySQL records, the children records in a different table get deleted also. Very simple setup: my tables are ''customers'' and ''accounts'' class

Hey- I''m using ROR 1.0 and script.aculo.us 1.5.1. I''ve been trying unsuccessfully to render a partial in a DIV, but can''t seem to get the right combination of stuff to make it work. There seems to be a few different ways of going about it. Right now I can render a partial. What do I need to to render the partial in a div? Here is what it looks like so far: #

People, I want to design a historical sports db for my old school. I think at the moment it should be like: A year has many teams A team has many students A student has one lastname, firstname and middlename but a student can also have many teams (eg summer/winter abd over a number of years) . . Is there a problem with this? Doesn''t it just mean that there will be a student table

has_many :through is great. Is there anyway to find the association that it went through? Example: class Student has_many :projects has_many :grades, :through => :projects end student.grades[3].project Is it clear what I''m asking? How would this be done? -- Posted via http://www.ruby-forum.com/.

No I have tried that. It gives me just this output # -----Original Message----- From: rails-bounces@lists.rubyonrails.org [mailto:rails-bounces@lists.rubyonrails.org] On Behalf Of Pat Maddox Sent: Friday, January 27, 2006 2:48 PM To: rails@lists.rubyonrails.org Subject: Re: [Rails] Trying to understand the difference between similariterators Well first of all, when you''re iterating

Hi, I am very confused about an aspect of has_one and has_many relations, with regard to using the build method, and saving the belongs_to side. It''s a somewhat long post. so please bear with me :) First let''s consider the has_one scenario. Let''s say I have a student who must own exactly one car: class Student has_one(:car) end class Car belongs_to(:student)

It seems that using a join model that joins with two has_many''s will fail to generate proper SQL class StudentSemesterRecord < ActiveRecord::Base belongs_to :semester has_many :discipline_records, :through => :semester end class Semester < ActiveRecord::Base has_many :student_semester_records has_many :discipline_records end class DisciplineRecord <