Get a particular key value from json in ruby
You need to parse the JSON object into a ruby hash. Assuming your JSON response is called res: require ‘json’ obj = JSON.parse(res) sv1 = obj[‘KEY1’][‘SUB_KEY1’] etc.
ruby-on-rails
Is it a bad idea do divide the models into directories?
No, it’s not a bad idea. Many people do it and I couldn’t live without it in large applications. There are two ways of doing it: The first is to just move your models. You will, however, have to tell Rails to load the wayward models (as it won’t know where they are). Something like … Read more
Rspec: Check if array includes object which includes property
It is also possible using the having_attributes alias: expect(my_array).to include( an_object_having_attributes(id: 5) ) or, as in my own use case, matching the whole array: expect(my_array).to contain_exactly( an_object_having_attributes(id: 5), an_object_having_attributes(id: 6), an_object_having_attributes(id: 2) )
Multiple table joins in rails
To rewrite the SQL query you’ve got in your question, I think it should be like the following (though I’m having a hard time fully visualizing your model relationships, so this is a bit of guesswork): RagaContextApplicantsSong. joins(:raga_contest_applicants => [:raga_content_rounds], :contest_cat). group(‘raga_contest_rounds.contest_cat_id’) …such that the joins method takes care of both of the two joins … Read more
bundler/setup (LoadError)
You likely have bundler gem missing. To get it to work run (first command may need be executed with sudo, depending on your environment): [sudo] gem install bundler bundle install
WEBrick::HTTPStatus::LengthRequired error when accessing create method in controller
I got this when I did a POST with an empty body. I was using curl. Something like: curl -X POST http://url/ I added -d ” and it cleared up the issue. curl -X POST http://url/ -d ” In your case, you probably need to add some content to a :body => ” attribute in … Read more
ruby integer to boolean
You could use the zero? method. It returns true if 0. If you need to backwards, you could easily negate it to !@system_config.resend.zero?. Or you could extend the Fixnum class, adding a to_b? method, since everything is open and extensible in dynamic languages. class Integer def to_b? !self.zero? end end Ruby API: http://ruby-doc.org/core/classes/Fixnum.html#M001050
rails 3: layout for namespaced routes
I usually have a Base controller class in my namespace, and then have all controllers in that namespace inherit from it. That allows me to put common, namespace specific code in Base and all the controllers in that namespace can take advantage. For example: class Admin::BaseController < ApplicationController layout ‘admin’ before_filter :require_admin_user end class Admin::WidgetsController … Read more
Do routing specs support redirect routes? [RSpec]
Routing specs/tests specialize in testing whether a route maps to a specific controller and action (and maybe some parameters too). I dug into the internals of Rails and Journey a bit. RSpec and Rails (basically, some details left out) use Rails.application.routes.recognize_path to answer the question “is this routable?” For example: $ rails console > Rails.application.routes.recognize_path(“/business_users/1”, … Read more
Are there any limits on length of string in mysql?
CHAR A fixed-length string that is always right-padded with spaces to the specified length when stored The range of Length is 1 to 255 characters. Trailing spaces are removed when the value is retrieved. CHAR values are sorted and compared in case-insensitive fashion according to the default character set unless the BINARY keyword is given. … Read more