Recent questions tagged ruby

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ruby - Use Rack::CommonLogger in Sinatra

I have a small web-server that I wrote with Sinatra. I want to be able to log messages to a log file. I've ... that's part of what's required. See Question&Answers more detail:os...

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

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542 views

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ruby - Rails 3 invalid multibyte char (US-ASCII)

I found a similar post here but I can't solve the problem anyway. I got this /home/fra/siti/Pensiero/db/seeds.rb ... it doesn't work. Any idea? See Question&Answers more detail:os...

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

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282 views

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ruby - How to select nodes by matching text

If I have a bunch of elements like: <p>A paragraph <ul><li>Item 1</li><li>Apple</li><li>Orange</ ... element above would match, for instance). See Question&Answers more detail:os...

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

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396 views

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ruby - Logging in Sinatra?

I'm having trouble figuring out how to log messages with Sinatra. I'm not looking to log requests, but rather ... this one as a duplicate). See Question&Answers more detail:os...

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

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517 views

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ruby on rails - Postgresql adapter (pg): could not connect to server

I get this error every this I run my Rails app (It cannot connect to my local Postgresql) /Users/leonardo/.rvm ... (Console) $ psql leonardo=# l See Question&Answers more detail:os...

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

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704 views

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ruby on rails 3 - How to Implement ajax pagination with will_paginate gem

I am using will_paginate gem in my ROR project to show the records in pages. I want the next page to be loaded ... for me. How to do 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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578 views

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ruby on rails - How to import a Heroku PG dump into local machine

I'm trying to import my production Heroku database into my development machine. My local db is PostgreSQL. First, I' ... and how to solve it? See Question&Answers more detail:os...

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

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484 views

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ruby - Difference between the access modes of the `File` object (ie. w+, r+)

When using files in Ruby, what is the difference between the r+ and w+ modes? What about the a+ mode? See Question&Answers more detail:os...

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

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506 views

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ruby on rails - With Capybara, how do I switch to the new window for links with "_blank" targets?

Perhaps this isn't actually the issue I'm experiencing, but it seems that when I "click_link" a link with ... myself) would be much 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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472 views

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ruby - Unpermitted Parameters adding new fields to Devise in rails 4.0

Very new to working with rails. I have implemented a basic login system using Devise. I am trying to add a ... them and where/how to implement. See Question&Answers more detail:os...

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

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549 views

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ruby - undefined method `visit' when using RSpec and Capybara in rails

I can't get capybara working with rspec. It gives me this error: undefined method `visit' for #<RSpec::Core:: ... ideas what I should try next? See Question&Answers more detail:os...

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

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953 views

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ruby on rails - has_and_belongs_to_many, avoiding dupes in the join table

I have a pretty simple HABTM set of models class Tag < ActiveRecord::Base has_and_belongs_to_many :posts end class Post ... ) in the tags 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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413 views

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ruby - What is the difference between build and new on Rails?

Can anyone tell me what is the difference between build and new command on 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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626 views

1 answer

ruby - Failed to build gem native extension — Rails install

I have been installing Ruby on Rails based on the instruction from edX online class. Here is a list of ... ext/json/ext/generator/gem_make.out See Question&Answers more detail:os...

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

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483 views

1 answer

ruby on rails - Gem::LoadError for mysql2 gem, but it's already in Gemfile

Gem::LoadError Specified 'mysql2' for database adapter, but the gem is not loaded. Add `gem 'mysql2'` to ... server but still get 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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311 views

1 answer

ruby on rails - blueprint/screen.css isn't precompiled

I've been following along Michael Hartl's excellent RoR Tutorial, but I'm using RoR 3.1. I am a newbie to ... manifest.yml. What am I missing? See Question&Answers more detail:os...

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

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352 views

1 answer

ruby - Rails 3 - Speed up Console Loading Time

I am wondering if there is any relatively easy way to speed up my console load time, which is starting to ... ' end Thank you very much! See Question&Answers more detail:os...

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

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291 views

1 answer

ruby on rails - Why can't I install the SQLite gem?

I'm try to install the SQLite gem on a Fedora 9 Linux box with Ruby 1.8.6, Rails 2.2.2, gem 1.3, ... the console. How can I install this gem? See Question&Answers more detail:os...

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

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513 views

1 answer

ruby - "Could not find a valid gem in any repository" (rubygame and others)

I've been trying to install this 'rubygame' gem for some time, but whenever I use the command gem install ... only shows http://rubygems.org See Question&Answers more detail:os...

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

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496 views

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ruby on rails - is not checked out... bundle install does NOT fix help!

https://github.com/intridea/omniauth.git (at master) is not checked out. Please run `bundle install` ( ... install on my production server. See Question&Answers more detail:os...

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

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600 views

1 answer

ruby on rails - Use bundle exec rake or just rake?

I learned Rails using just the rake command like rake db:migrate; however, I read that I should be using ... would be 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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403 views

1 answer

ruby on rails - How to check if a string is a valid date

I have a string: "31-02-2010" and want to check whether or not it is a valid date. What is the best way ... valid date and false if it is not. See Question&Answers more detail:os...

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

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333 views

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ruby - Why does explicit return make a difference in a Proc?

def foo f = Proc.new { return "return from foo from inside proc" } f.call # control leaves foo here return ... anyone know why this is the case? See Question&Answers more detail:os...

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

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511 views

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ruby on rails - accepts_nested_attributes_for child association validation failing

I'm using accepts_nested_attributes_for in one of my Rails models, and I want to save the children after creating ... is invalid? 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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535 views

1 answer

ruby on rails - What does rake db:test:prepare actually do?

I am following the rails tutorial videos and I can't figure out what the db:test:prepare command actually ... someone provide an explanation? See Question&Answers more detail:os...

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

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472 views

1 answer

ruby on rails 3 - How can I specify a gem to pull from a private github repository?

I have a private repository on Github that I want to use. I deploy my app to Heroku. How can I specify a ... ", :git=>"my github address" See Question&Answers more detail:os...

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

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1.3k views

1 answer

ruby on rails - How to set request headers in rspec request spec?

In the controller spec, I can set http accept header like this: request.accept = "application/json" but in the ... this get '/my/path.json' See Question&Answers more detail:os...

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

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275 views

1 answer

ruby - Overriding method by another defined in module

I want to define an instance method Date#next which returns the next day. So I made a DateExtension ... declared in DateExtension module? See Question&Answers more detail:os...

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

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