Embedded Model Designing -- top down or bottom up?

Posted by Jeff on Programmers See other posts from Programmers or by Jeff
Published on 2014-06-11T15:41:28Z Indexed on 2014/06/12 21:38 UTC
Read the original article Hit count: 336

Filed under:

mvc

|

ruby-on-rails

|

model

I am trying to learn RoR and develop a webapp.

I have a few models I have thought of for this app, and they are fairly embedded. For example (please excuse my lack of RoR syntax):

Model: textbook
    title:string
    type:string
    has_many: chapters

Model: chapter
    content:text
    has_one: review_section

Model: review_section
    title:string
    has_many: questions
    has_many: answers , through :questions

Model: questions
   ...

Model: answers

   ...

My question is, with the example I gave, should I start at the top model (textbook) or the bottom most (answers)?

© Programmers or respective owner

Related posts about mvc

ASP.NET MVC 3 - New Features

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Introduction: ASP.NET MVC 3 just released by ASP.NET MVC team which includes some new features, some changes, some improvements and bug fixes. In this article, I will show you the new features of ASP.NET MVC 3. This will… >>> More
Migrating ASP.NET MVC 1.0 applications to ASP.NET MVC 2 RTM

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Note: ASP.NET MVC 2 RTM isn’t yet released! But this tool will help you get your ASP.NET MVC 1.0 applications ready for when it is! I have updated the MVC App Converter to convert projects from ASP.NET MVC 1.0 to ASP.NET MVC 2 RTM. This should be last the last major change to the MVC App Converter… >>> More
Web Matrix released

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Microsoft have now released Web Matrix (and ASP.NET MVC3 if you so inclined!) One signifcant utility is IIS Express which will replace Cassini It is worth noting that SP1 for VS2010 should be out in Q1. Links: http://www.hanselman.com/blog/ASPNETMVC3WebMatrixNuGetIISExpressAndOrchardReleasedTheMicrosoftJanuaryWebReleaseInContext… >>> More
Loading any MVC page fails with the error "An item with the same key has already been added."

as seen on Stack Overflow - Search for 'Stack Overflow'
I am having an intermittent issue that is appearing on one server only, and is causing all MVC pages to fail to load with the error "An item with the same key has already been added." Restarting the application pool fixes the issue, but until then, loading any mvc page throws the following exception: Event… >>> More
MVC HTML.RenderAction – Error: Duration must be a positive number

as seen on Stack Overflow - Search for 'Stack Overflow'
On my website I want the user to have the ability to login/logout from any page. When the user select login button a modal dialog will be present to the user for him to enter in his credentials. Since login will be on every page, I thought I would create a partial view for the login and add it to… >>> More

Related posts about ruby-on-rails

Ruby on Rails - How can I start? [closed]

as seen on Programmers - Search for 'Programmers'
I have misconception in understanding the relationship between Ruby language and Ruby on Rails Framework. Because of 'I am an absolute beginner' in web development I have no idea if I have to grasp the fundamentals of Ruby before I go with Ruby on Rails! I also want to ask who is behind both Ruby… >>> More
DES3 decryption in Ruby on Rails

as seen on Stack Overflow - Search for 'Stack Overflow'
My RoR server receives a string, that was encrypted in C++ application using des3 with base64 encoding The cipher object is created so: cipher = OpenSSL::Cipher::Cipher::new("des3") cipher.key = key_str cipher.iv = iv_str key_str and iv_str: are string representations of key and initialization… >>> More
Ruby on rails: Image downloads with Authentication/Authorization/Time outs

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi Guys, I'm having few doubts on implementing file downloads. I'm creating an app where I use attachment_fu with Amazon s3 to upload files. Things are working pretty well so far on uploading side. Now its the time to start the file downloads. Here is what I need, a logged in user search and browse… >>> More
Ruby on Rails deployment, on "thin" server with lot of attachments

as seen on Stack Overflow - Search for 'Stack Overflow'
A lot of PDFs are stored inside MySQL as a BLOB field for each PDF file. The average file size is 500K each. The Rails app will stream the :binary data as file downloads, where there is a user click on the download link. Assume there is a maximum of 5 users downloading 5 PDFs concurrently, what… >>> More
Apply Behavior Driven Development to Ruby on Rails with Rspec

as seen on Internet.com - Search for 'Internet.com'
Applying the Behavior Driven Development (BDD) methodology to your Rails development takes you beyond traditional Test Driven Development. Learn how to do it with the Ruby-based BDD framework RSpec. >>> More