Recent questions tagged ruby

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I have read the documentation at http://api.rubyonrails.org/classes/ActiveRecord/Callbacks.html, but don't ... help much appreciated. 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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ruby on rails - rails4 unknown encoding name - CP720

I got now this error When I want to run any gem commands such as gem install rubygems-update the error while ... : I'm using windows 7 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Named routes _path vs _url

Rails provides named routes. Routes helper can be called using path or url eg from docs: # and provide these named ... use what would be great. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - How to use bundler behind a proxy?

I get the following output from the sudo bundle install command: Fetching source index for `http://rubygems.org/` ... wouldn't mind doing...) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - ActionController::InvalidAuthenticityToken in RegistrationsController#create

Hi I am using Devise for my user authentication suddenly my new user registration was not working. this was error I am ... </div> <% end %> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Using Rails Migration on different database than standard "production" or "development"

I have a rails project running that defines the standard production:, :development and :test DB-connections in ... definition? Thanks, Frank See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - How does Array#sort work when a block is passed?

I am having a problem understanding how array.sort{ |x,y| block } works exactly, hence how to use it? An example from Ruby ... , "c", "b", "a"] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - gem install permission problem

qichunren@zhaobak:~> gem install hpricot ERROR: While executing gem ... (Gem::FilePermissionError) You don't have write ... 7/lib/ruby/gems/1.8 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Using send_file to download a file from Amazon S3?

I have a download link in my app from which users should be able to download files which are stored on s3. ... allow users to download S3 files? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Why are all Rails helpers available to all views, all the time? Is there a way to disable this?

Why can I access helper methods for one controller in the views for a different controller? Is there a ... this without hacking/patching Rails? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Convert Time from one time zone to another in Rails

My created_at timestamps are stored in UTC: >> Annotation.last.created_at => Sat, 29 Aug 2009 23 ... Annotation.last.created_at.in_eastern_time See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - A migration to add unique constraint to a combination of columns

What I need is a migration to apply unique constraint to a combination of columns. i.e. for a people table ... and Dob should be unique. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Installing Nokogiri on OSX 10.10 Yosemite

I recently upgrade to the 10.10 Yosemite beta, but I'm having trouble getting Nokogiri installed. I'm using RVM ... in the 10.10 environment. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - find_spec_for_exe': can't find gem bundler (>= 0.a) (Gem::GemNotFoundException)

I used sudo bundle install and that might be the cause of the issue? Now I have: gem -v 2.6.14 ruby ... :) So I would appreciate some insights! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Why can't I install Rails on Lion using RVM?

I'm running into issues trying to install Rails on OS X Lion using RVM. So far, I have done the ... /github.com/carlhuda/bundler/issues/1058 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - How do I "activate" a different version of a particular gem?

I want to switch between rails 2.3.10 as the "active" gem for my OS, so that I can invoke it at the ... over gems at the OS level until now) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - How do you downgrade rubygems?

I have rubygems 1.3.1 installed but I want to go back to 1.2.0. What's the command to downgrade rubygems? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Nokogiri 'Failed to build gem native extension' when I run bundle install

I'm running bundle install and I'm getting this error: Building nokogiri using system libraries. Gem::Ext:: ... install it displays the error. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Unresolved specs during Gem::Specification.reset:

When launching Guard, I'm getting this output: $ guard WARN: Unresolved specs during Gem::Specification.reset: lumberjack ... => '.min.css' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Pass a variable into a partial, rails 3?

I have a loop like such: <% @posts.each do |post| %> <% render middle %> <% end %> Then in my middle partial, how do I access the current post? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - Can I get the name of the current controller in the view?

Is there a way to figure out what the current controller is from within the view? For an example of why I would ... there's a built-in 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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ruby - Serving static files with Sinatra

I have one page website only using HTML, CSS and JavaScript. I want to deploy the app to Heroku, but I cannot ... point to the `index.html` end See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - How to check for a JSON response using RSpec?

I have the following code in my controller: format.json { render :json => { :flashcard => @flashcard, ... I checking the response incorrectly? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails - belongs_to through associations

Given the following associations, I need to reference the Question that a Choice is attached through from the ... help would be appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails 3 - Thin web server: `start_tcp_server': no acceptor (RuntimeError) after git branch checkout

A Rails 3.2.0 app, working fine with Thin web server, both locally and on Heroku cedar stack. After: $ git ... Nothing seems to work. Any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Rails 4: assets not loading in production

I'm trying to put my app into production and image and css asset paths aren't working. Here's what I'm currently ... the /assets/****.js path). See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby - Rails update_attributes without save?

Is there an alternative to update_attributes that does not save the record? So I could do something like: @car = Car ... them all on one line. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ruby on rails 3 - rmagick gem install "Can't find Magick-config"

I get the error shown below when attempting to install the rmagick gem. I am on Snowleopard 10.6 using RVM, ... uninstalls are a cinch as well! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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