Recent questions tagged ruby

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608 views

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ruby - Importing CSV quoting error is driving me nuts

I've been having an unbelievable time trying to import a CSV file in ruby-1.9.2. The file I am trying to ... to be in double quotes. 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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2.1k views

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ruby on rails - How do I remove Permission denied @ rb_sysopen - Gem install error?

I am trying to install create a new app in Ruby on Rails and I cannot get passed this error: $ gem install pg ... .0/gems/pg-0.21.0/.gemtest See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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564 views

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ruby - Error installing nokogiri 1.6.0 on mac (libxml2)

UPDATE: Fixed I found the answer in another thread. The workaround I used is to tell Nokogiri to use the ... research to no avail. 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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640 views

1 answer

ruby - How do you test if a div has a certain css style in rspec/capybara?

How do you test if a div tag has a certain css style? I'm trying to test if it has display: ... ', /display:s*none/)} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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ruby - Why alias_method fails in Rails model

class Country < ActiveRecord::Base #alias_method :name, :langEN # here fails #alias_method :name=, :langEN= ... What am I missing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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672 views

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ruby on rails - How to add Mac-specific gems to bundle on Mac but not on Linux?

I'm developing a Rails app on a Mac, and I'm new to testing, so I just added these gems to my ... :mingw_19] Any other (elegant) approaches? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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572 views

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ruby on rails - Error pushing to heroku - aborting my rake assets:precompile

Edit: I'm a new ruby on rails student. Following my Git Push Heroku Master, I am running into issues with Heroku. ... .9.3-p286/bin/ruby...] See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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745 views

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ruby on rails 3 - ActiveRecord .select(): Possible to clear old selects?

Is there a way to clear old selects in a .select("table.col1, ...") statement? Background: I have a ... fields or have to use multiple scopes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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724 views

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ruby on rails - how to change class of a label for checkboxes in simple_form

using simple_form we can change class of a label using: label_html => {:class => "myclass"} but how do we ... way to change this default class? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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597 views

1 answer

ruby on rails - deploying rails3 apps with bundler and phusion passenger: .bundle dir not found

i am trying to deploy rails3 apps with the latest phusion passenger 2.2.11 and ruby-enterprise-1.8.7-2010.01. ... to use? any hints? 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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846 views

1 answer

ruby on rails - bootstrap-sass: Undefined variable: "$baseLineHeight"

I've integrated bootstrap into my app using bootstrap-sass. The app works fine on my local machine, but when I ... .rb and production.rb to gist See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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769 views

1 answer

ruby on rails 3 - Auto-load the seed data from db/seeds.rb with rake

I'm using rails-rspec gem and I have several specs (models, controllers, etc). When I run: bundle exec rake ... best way to do so? 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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838 views

1 answer

ruby - Sidekiq not deallocating memory after workers have finished

I have about six Sidekiq worker which perform JSON crawling. Dependent on the endpoint's dataset size they ... streamed reading and writing. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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590 views

1 answer

ruby on rails - Implement autocomplete on MongoDB

Say I have a collection of users and want to implement autocomplete on the usernames of those users. I ... more performant/better practice. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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646 views

1 answer

ruby - How can I cache a calculated column in rails?

I have a tree of active record objects, something like: class Part < ActiveRecord::Base has_many :sub_parts, : ... side the "real" columns. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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661 views

1 answer

ruby - How do I use Watir::Waiter::wait_until to force Chrome to wait?

I'm trying to tell my watir script to wait for an ajax-injected login box to open up. I am using watir-webdriver, and ... mac (OSX v. 10.6.5). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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755 views

1 answer

ruby on rails - SSHKit::Runner::ExecuteError

$ bundle exec cap production deploy (Backtrace restricted to imported tasks) cap aborted! SSHKit::Runner:: ... still makes same error. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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702 views

1 answer

ruby on rails - Render JSON instead of HTML as default?

I try to tell rails 3.2 that it should render JSON by default, and kick HTML completely like this: respond_to : ... URL. How can I achieve it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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523 views

1 answer

ruby on rails - Association for polymorphic belongs_to of a particular type

I'm relatively new to Rails. I would like to add an association to a model that uses the polymorphic association, ... must be a better way? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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533 views

1 answer

ruby on rails - cannot load such file -- readline (LoadError) when running heroku create --stack cedar

I'm trying to deploy my Rails application to Heroku to test it out by following these instructions: http:// ... to publish it to Heroku. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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507 views

1 answer

ruby - Setting up Rails app on Apache with passenger - Rails doesn't seem to load

I am trying to set up Rails on a Ubuntu instance by following along with documentation such as https://help. ... 128 </Directory> </VirtualHost> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

663 views

1 answer

ruby - Is it possible to get the average image color with RMagick?

I need to know the average color from an image when I upload it to my Ruby on Rails application. Is it ... path).first hexVal = img.getHexValue See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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709 views

1 answer

ruby - gem install pg can not bind to libpq

After upgrading to Ruby 1.9.3 (from 1.9.2 using system RVM) on Ubuntu 10.04.3, I removed all of my gems, and ... PQconnectdb' checked program was: /* begin */ 1: #include "ruby.h"...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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596 views

1 answer

ruby - Rails 3 additional session configuration options (key, expires_after, secure)

Can someone point out what the new Rails 3.x session configuration options are? I'm trying to duplicate the ... required? Thanks very much! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

ruby - How to see the dependency tree just from Gemfile?

I am getting the following error when doing bundle install Make sure that `gem install couchbase -v '1.3.3' ... to figure out this dependency. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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728 views

1 answer

ruby on rails - How do I make dynamic ids in Haml?

#item creates a div with id="item" .box#item creates a div with class="box" and id="item" .box#="item "+x ... I get set the id to a variable? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

502 views

1 answer

ruby on rails - How to use jquery-Tokeninput and Acts-as-taggable-on

This is how you use autocomplete with jQuery Tokeninput and ActsAsTaggableOn. In my situation i am using a nested ... can I fix these issues? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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687 views

1 answer

ruby on rails - heroku run console returns 'Error connecting to process'

I have deployed a rails 3.1 app to Heroku Cedar stack, and am trying to perform a: heroku run rake db: ... tasks, I'm stuck moving forward. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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