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    How would I go about removing all empty elements (empty list items) from a nested Hash or YAML file? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    What is the difference between attr_accessible(*attributes) & attr_protected(*attributes)? Examples would be nice. ... in different scenarios? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have an model PointOfContact which has_many Systems. From the Systems side I want to identify the PointOfContact as ... 1 items, got 0 See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I used a script to install ImageMagick http://github.com/masterkain/ImageMagick-sl After a while, I got ImageMagick ... and Rails 3. Any ideas? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    When I run: rails new blog I get: Installing json (1.7.3) Gem::InstallError: The 'json' native gem requires ... do I do to remedy these errors? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am trying to get Haml to work with my Ruby on Rails project. I am new to Ruby on Rails and I really like ... . I am using NetBeans as my IDE. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Ryan Bates' nifty_scaffolding, for example, does this edit.html.erb <%= render :partial => 'form' %> new.html ... this whole thing... Thanks! See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Trying to install CocoaPods from the terminal: $ sudo gem install cocoapods After entering my root password, nothing ... can I debug that? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Heyya guys. So i thought about this coolio idea, if you are logged in then you get some sort of dashboard, ... thanks in advance! / Oluf Nielsen See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Let's say you're implementing a REST API in Rails. When serving a collection, you might want to only ... @people or: render json: @person See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have installed Rails and Ruby on Windows with railsinstaller. The problem is, when I run the rails command, it ... but rails -v= dont work. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a rake task where I do some checks at the beginning, if one of the checks fails I would ... get the following error unexpected return See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    On Rails 4.0.0.rc1, Ruby 2.0.0, after I run a migration, I see the following error when I try to run a ... going on? Is this new in Rails 4? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I would like to create an enum field at sone migration I'm doing, I tried searching in google but I can' ... , and validating from the model? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to install the following gem versions on Mavericks libv8 (3.16.14.3) therubyracer (0.12.1) Obviously ... up my gcc v4.6 compiler. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    It seems like it's taken for granted that you must not use Webrick as production server, but I can't really find ... 'm using Heroku by the way. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    This Ruby code is not behaving as I would expect: # create an array of hashes sort_me = [] sort_me.push({" ... ", but they are printed unsorted. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm using rails_admin, and since it is in (very) active development, bugs turn up every now and then. There ... this possible to do with github? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    It's probably not a paradox at all, but from a newbies perspective, it sure seems that way. > Class.superclass => ... can I make sense of this? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm building an application which I'm also testing in Heroku. I ran into some problem today and had to ... heroku master #Everything up-to-date See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have been using Sinatra for sometime now and I would like to add some realtime features to my web-app by ... between the two servers. Thanks! See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I use Active admin as my rails application backend. I want to make a file upload. How can I accomplish this functionality? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I've found myself twice in this situation: I install a gem on my system and start using it from my Rails ... my server. Does that make sense? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a controller which is responsible for accepting JSON files and then processing the JSON files to do ... the functional testing framework? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Before anything, please note that I have found several similar questions on Stack Overflow and articles all over the ... how I could fix this? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Given the following class User < ActiveRecord::Base has_and_belongs_to_many :companies end class Company < ... fundamentally wrong? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I often see the following notation(~>) in Gemfile. gem "cucumber", "~>0.8.5" gem "rspec", "~>1 ... both same or has any significant difference? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I was reading a book and in a chapter about Controllers when it talks about rendering stuff, for JSON it ... ' Can someone explain these? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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