Are there tutorials that walk you through making a photo album using
RoR?
Thanks.
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Are there tutorials that show you how to build an RoR application where
you can upload and display images?
Thanks.
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Is there a tutorial for `carrierwave` other than in RailsCasts that you
recommend?
Thanks.
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When trying to migrate a database to `Heroku`, I get the following
(Provided that I'm using `gem 'sqlite3', '1.3.3'`:
$ heroku rake db:migrate
(in /app)
rake aborted!
uninitialized constant Rake::DSL
/usr/ruby1.9.2/lib/ruby/1.9.1/rake.rb:2482:in `const_missing'
When I try to push my application to 'GitHub' using 'Git', I get the
following:
$ git push origin master
Enter passphrase for key '/c/Users/Medicine - SWEng/.ssh/id_rsa':
ERROR: Repository not found.
fatal: The remote end hung up unexpectedly
**EDIT:**
Output of running `git
I'm following this tutorial, and have followed the steps to deploying to
'Heroku'.
When I open the application from 'Heroku', this is what I get:
http://furious-sunrise-574.heroku.com/
Why isn't my application showing up?
Thanks.
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If I write the following code for example in 'Gemfile':
group :development do
gem 'xyz'
end
group:test do
gem 'xyz'
end
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Robert Walker wrote in post #1013009:
I know nothing else beyond the existence of this:
https://github.com/ser1zw/ruby-opencv
Thanks for your reply. I wonder if there is for Rails?
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Can I use OpenCV with Ruby on Rails? If so, how can I do that? Or, what
resources do you recommend for that?
Thanks.
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Jim Crate wrote in post #973893:
Since there is a theoretical parts that can be taken care of (i.e;
algorithms), I just want to be rest assured that I can implement that
using RoR. So, the issue is, can I do such CAD stuff on RoR?
Ruby is a complete enough language, and there are gems like
Dennis Major wrote in post #973530:
Is there a more specific proposed pathway.
RUBY
Ruby home page: http://www.ruby-lang.org/en/
and the link they list for suggested Ruby books:
http://www.amazon.com/s/ref=sr_nr_n_5?ie=UTF8rs=1000keywords=Rubyrh=i:aps,k:Ruby,i:stripbooks,n:1000,n:5
Thanks @walter for your throrough responce.
To be more specific where I would like to use RoR, I would like to use
it initially in:
- Reading a DICOM image of a patient that is more likely suffering from
lung cancer for example.
- Compare the read DICOM image with other DICOM images in the
Riccardo Tacconi wrote in post #973592:
In Ruby and Rails the most important thing is experience and having
code on Github. Learn Ruby with the Pickaxe book, learn Rails with the
Rails Guides and 'Agile Web Development with Rails (4rd edition)',
learn BDD with 'The RSpec Book: Behaviour-Driven
Thanks so much @Edmond for your very valuable reply. It is really VERY
helpful.
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Thanks so much @Edmond, really appreciate it.
What do you think of them is near to what I'm thinking about, that is a
CAD system that diagnoses lung cancer through making comparison of DICOM
images?
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@Edmond. Yes, the bit.ly links work fine now. Appreciate it.
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I'm ready to share more with you especially, on implementing expert CAD
systems.
Appreciate that @Edmond So, what is the pathway that you recommend me to
follow do in order to reach the goal of for example: Building a CAD
system that helps in the diagnosis of lung cancer.
The first clear
Thanks @Colin.
Since there is a theoretical parts that can be taken care of (i.e;
algorithms), I just want to be rest assured that I can implement that
using RoR. So, the issue is, can I do such CAD stuff on RoR?
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You must work out what the software is supposed to do in more detail
than you have given so far *before* deciding on the technology to use
to implement it, not the other way around.
Colin
I got what you mean. So, I think if not sure if it is appropraite, one
can give it a try. Right?
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So @walter, what do you recommend to approach healthcare through RoR?
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Hello,
I want to ask if there are any Ruby on Rails certifications out there.
Even if they are not too much formal, I think it would be a good idea to
follow the requirements of a certificate especially for beginners so
they at least no the pathway to learning Ruby on Rails.
So, are there any
Thanks @marnen. Well, I think in addition for the certificate to be some
sort of pathway, it can make you commited to learning.
If there is a certificate out there, that would be nice.
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Thanks @Peter. So, can you propose a pathway you recommend someone new
to Ruby on Rails to follow to be a professional developer in RoR.
For example, @marnen proposed the following:
Pathway:
Learn Ruby. Read the Rails Guides. Learn DB design. Practice!
Is there a more specific proposed
Being interested in applying Ruby on Rails to the Healthcare sector
(IT Healthcare), what do you recommend me to do as a next step after
learning Ruby on Rails? In other words, what PATHWAY do you recommend
someone to approach in applying Ruby on Rails to healthcare especially
the CAD
Walter Davis wrote in post #972903:
On Jan 6, 2011, at 2:23 PM, SW Engineer wrote:
Being interested in applying Ruby on Rails to the Healthcare sector
(IT Healthcare), what do you recommend me to do as a next step after
learning Ruby on Rails? In other words, what PATHWAY do you
recommend
In the Ruby on Rails tutorial website:
http://railstutorial.org/chapters/filling-in-the-layout#sec:rails_routes,
section 5.2.2: Rails routes, it was mentioned that:
match '/about', :to = 'pages#about'
Creates the following named routes for use in the controllers and
views:
about_path = '/about'
Tim Shaffer wrote in post #972300:
On Tuesday, January 4, 2011 2:36:51 PM UTC-5, Ruby-Forum.com User wrote:
about_path = '/about'
about_url = 'http://localhost:3000/about'
From this thing, why did I use about_path here and NOT about_url?
Are they differeny then?
As you seem to have
In this case, how do we read:
match '/about', :to = 'pages#about'
I mean, what does the preceding statement say? Where is the URL here?
Thanks.
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Thanks Fred.
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venkata reddy wrote in post #967814:
u know why it is happening..
heroku uses postgresql as default..
so if u r using sqlite3 u should disable that..
u can do that by commenting one single line in ur gemfile
that will like gem require=sqlite3 or something like that...
then do:
heroku
Following chapter (1) of the Ruby on Rails tutorial:
http://railstutorial.org/, I was able to successfuly push the
application to Heroku using:
git push heroku master
But, when I open the website, I get a page with the following:
App crashed
This application is temporarily offline.
If you're the
I know this may be a very basic question, but confusing me.
If I write the following for example in the controller:
@x = App.new(params[:x])
I know that I'm trying to create a new object here, but how can I read
the params[:x] part.
I know also that params is a Hash table in the controller,
Thanks @Marnen.
I'm asking just how to read this:
@x = App.new(params[:x])
Like saying, Create a new object...
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Thanks a lot.
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Thanks @Fred.
Now, I'm getting it better.
The last thing is, will the value be passed as a parameter to [:x] when
creating a new object?
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Following this tutorial on uploading a file:
http://www.dizzy.co.uk/ruby_on_rails/contents/store-file-uploads-in-database#rendering_an_image_stored_in_the_database
I reached: 3. Rendering an image stored in the database.
But, before commencing with that, I tried to create a new entry, and NO
Reagarding references, I thought is was related to ActiveScaffold, but
from here:
http://vhochstein.wordpress.com/2010/08/28/setupactivescaffoldrails3/#comments
I was told it is pure Rails.
Information on references can be found here:
http://guides.rubyonrails.org/migrations.html
Thanks.
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Thanks a lot everyone.
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radhames brito wrote:
Watch the railscast about inherited_resources at railscasts.com
2010/9/22, Abder-Rahman Ali li...@ruby-forum.com:
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I think the solution to that was using references as shown in the
example below:
http://vhochstein.wordpress.com/2010/08/28/setupactivescaffoldrails3/#comments
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I used ActiveScaffold to create my Rails application.
After I fill the fields and try to Create the new data, I get the
following:
Request Failed (code 500, Internal Error) Close
I don't know if this is caused by the Date field, which its value
looks like this:
Wed, 15 Sep 2010 00:00:00 %z
Thanks @Marnen.
I think my issue was solved by the simple example here:
http://vhochstein.wordpress.com/2010/08/28/setupactivescaffoldrails3/#comments
What I was trying to do with partials is that I have an items and
itemdetails tables, and items has_many itemdetails, and wanted
the
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