Recent questions tagged ruby

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ruby - How do I parse an HTML table with Nokogiri?

I installed Ruby and Mechanize. It seems to me that it is posible in Nokogiri to do what I want to do but I do not ... > </tr> </tbody> </table> 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 - Devise Custom Routes and Login Pages

I'm trying to get Custom Routes working in my Rails application (Ruby 1.9.2 with Rails 3). This is my ... on Mac OSX Snow Leopard. 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 - There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError)

Why am i getting this error? shibly@mybox:~/blog$ rails server /home/shibly/.gem/ruby/2.2.4/gems/bundler-1.11.2/ ... from bin/rails:9:in `<main> 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 - Limit number of objects in has_many association

I have an album which has_many photos. A counter_cache setup updates the photos_count column in the album table. How ... of photos for an album? 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 - When do I need to restart server in Rails?

I have noticed that when I change rails project files such as a html.erb or .css, I don't have to restart ... the webpage to see the changes. 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 - Why not use shared ActiveRecord connections for Rspec + Selenium?

It seems the most commonly accepted way to deal with Selenium and tests is to avoid using transactional fixtures and ... this shouldn't be used? 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 - SimpleForm without for (non model form)

Is it possible to use Simple Form (by: Plataformatec) without a model? https://github.com/plataformatec/simple_form 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 - ActiveRecord serialize using JSON instead of YAML

I have a model that uses a serialized column: class Form < ActiveRecord::Base serialize :options, Hash end Is ... use JSON instead of YAML? 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 - To use self. or not.. in Rails

I've been coding in Ruby for sometime now, but I don't understand when to use: def self.METHOD_NAME end or just ... and when not?. Thanks a ton. 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 is spec/rails_helper.rb different from spec/spec_helper.rb? Do I need it?

I am doing the Rails Tutorial for the second time. When I enter this rails generate integration_test ... without messing everything up? 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 - EOFError: end of file reached issue with Net::HTTP

I am using ruby-1.8.7-p302/Rails 2.3.11. I am trying to use FQL (Facebook API) to get stats for a link. ... this could be a bug in Net::HTTP. See Question&Answers more detail:os...

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

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477 views

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ruby - How to make Sinatra work over HTTPS/SSL?

As the title says, Google doesn't give anything useful concerning this. How do I set up and configure ... so I appreciate detailed answers. See Question&Answers more detail:os...

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

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383 views

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ruby on rails - nokogiri gem installation error

I know there are a lot of questions about this gem but no answer has worked for me. When I run in SSH gem ... from extconf.rb:419:in `<main>' 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 Object Relationships and JSON Rendering

Disclaimer, I know very little about Rails. I'll try to be succinct. Given the following model relations in Rails: class ... 1, 2 and 3] } } See Question&Answers more detail:os...

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

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430 views

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ruby - How to use gem to install Rails on Ubuntu

The error message: Building native extensions. This could take a while... ERROR: Error installing rails: ERROR: ... 08) [x86_64-linux-gnu] See Question&Answers more detail:os...

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

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507 views

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ruby - NoMethodError when trying to invoke helper method from Rails controller

I'm getting a NoMethodError when trying to access a method defined in one of my helper modules from one ... then everything works correctly. 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 I use define_method to create class methods?

This is useful if you are trying to create class methods metaprogramatically: def self.create_methods(method_name) # To ... answer to follow... See Question&Answers more detail:os...

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

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522 views

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ruby - Is Sinatra multi threaded?

Is Sinatra multi-threaded? I read else where that "sinatra is multi-threaded by default", what does that ... instance of the application? See Question&Answers more detail:os...

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

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467 views

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ruby on rails - Difference between form_for , form_tag?

What is the difference between form_for and form_tag? Is anything different for form_remote_for and form_remote_tag? See Question&Answers more detail:os...

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

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603 views

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ruby on rails - Can nginx be used as a reverse proxy for a backend websocket server?

We're working on a Ruby on Rails app that needs to take advantage of html5 websockets. At the moment, we ... advice or suggestions. :) -John See Question&Answers more detail:os...

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

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612 views

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ruby on rails - Scope with join on :has_many :through association

class Users < ActiveRecord::Base has_many :meetings, :through => :meeting_participations has_many :meeting_participations ... solution to 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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730 views

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ruby - Convert UTC to local time in Rails 3

I'm having trouble converting a UTC Time or TimeWithZone to local time in Rails 3. Say moment is some Time ... and are (UTC-5) yearlong. See Question&Answers more detail:os...

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

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481 views

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ruby on rails - How Do I Use Factory Girl To Generate A Paperclip Attachment?

I have model Person that has many Images, where images has a Paperclip attachment field called data, an abbreviated ... I am using Rails 3. See Question&Answers more detail:os...

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

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363 views

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ruby - How to do static content in Rails?

Looking at different options: One is to just put the static pages in the public/ folder, but I do want the ... .rhtml. who has done 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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518 views

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ruby - Haml: Append class if condition is true in Haml

If post.published? .post / Post stuff Otherwise .post.gray / Post stuff I've implemented this with rails helper ... ?).to_s} / Post stuff See Question&Answers more detail:os...

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

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521 views

1 answer

ruby on rails - How to use my view helpers in my ActionMailer views?

I want to use the methods I defined in app/helpers/annotations_helper.rb in my ReportMailer views (app/views/ ... This is pretty annoying.) See Question&Answers more detail:os...

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

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438 views

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ruby - Rails Paperclip how to delete attachment?

I am using Paperclip (w/ Amazon s3) on Rails 3. I want to delete an existing attachment without replacing it ... image? I appreciate any help! See Question&Answers more detail:os...

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

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376 views

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ruby on rails - Using angularjs with turbolinks

I am trying to use Angularjs framework in my app with turbolinks. After page change it do not initialize new ... it work? Thanks in advance! See Question&Answers more detail:os...

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

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