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Published on 2010-05-19T06:02:37Z
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Whats is active record "a design Pattern" OR "a module". Basically whats the difference between design pattern, module and some other terms we use.
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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…
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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…
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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…
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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…
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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.
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I have a standard ActiveRecord model with the following:
class MyModel < ActiveRecord::Base
custom_method :first_field, :second_field
end
At the moment, that custom_method is picked up by a module sent to ActiveRecord::Base. The functionality basically works, but of course, it attaches itself…
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I have three models:
class Book < ActiveRecord::Base
has_many :collections
has_many :users, :through => :collections
end
class User < ActiveRecord::Base
has_many :collections
has_many :books, :through => :collections
end
class Collection < ActiveRecord::Base
belongs_to…
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I would like to know if it is possible to get the types (as known by AR - eg in the migration script and database) programmatically (I know the data exists in there somewhere).
For example, I can deal with all the attribute names:
ar.attribute_names.each { |name| puts name }
.attributes just…
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I needed to fix the encoding of an ActiveRecord attribute and decided to do it in a before_save hook. And at this point I noticed an unexpected feature. When I wanted to change the value of the attribute, simple using the attribute_name=XY did not work as I expected. Instead of that I needed to use…
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So i am trying to do this
Order.find :all, :conditions => "org = 'test org'"
what ends up firing is
SELECT * FROM `orders` WHERE (org = 'test org')
the whitespace in the argument gets stripped. what am i missing.. im really stumped here. please help!
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