Recent questions tagged ruby

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ruby on rails - delete_all vs destroy_all?

I am looking for the best approach to delete records from a table. For instance, I have a user whose user ... to confirm the correct approach. See Question&Answers more detail:os...

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

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448 views

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ruby - How to install therubyracer gem on 10.10 Yosemite?

I don't manage to install therubyracer gem on Yosemite 10.10. Here is the log: 11:53 $ gem install libv8 ... /therubyracer-0.12.1/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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387 views

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ruby on rails - How do I use gems with Ubuntu?

I recently upgraded to Ubuntu 9.04 and I have issues using gems. I installed Ruby, Rubygems and Rails using apt ... that the gem commands 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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443 views

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ruby - What is the difference between print and puts?

For example in this line of code I wrote, print and puts produce different results. 1.upto(1000).each { |i| print i if i % 2 == 0 } See Question&Answers more detail:os...

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

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277 views

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ruby on rails - How to implement an achievement system in RoR

I'm attempting, poorly, to implement an achievement system into my Ruby on Rails application. I have a long list ... than plan a. thanks! Oren 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 - Testing modules in RSpec

What are the best practices on testing modules in RSpec? I have some modules that get included in few models and for ... a way to DRY it 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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368 views

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ruby - Rails: How to change the title of a page?

What is the best way to create a custom title for pages in a Rails app without using a plug-in? See Question&Answers more detail:os...

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

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554 views

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ruby on rails - Haml: Control whitespace around text

In my Rails template, I'd like to accomplish final HTML to this effect using HAML: I will first <a href= ... of extra markup to accomplish 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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534 views

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ruby - How do I remove blank elements from an array?

I have the following array cities = ["Kathmandu", "Pokhara", "", "Dharan", "Butwal"] I want to remove ... that will do it without loops? See Question&Answers more detail:os...

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

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786 views

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ruby - Iterate through every file in one directory

How do I write a loop in ruby so that I can execute a block of code on each file? I'm new to ruby, and I ... and I couldn't get it to 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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442 views

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ruby - Best practices to handle routes for STI subclasses in rails

My Rails views and controllers are littered with redirect_to, link_to, and form_for method calls. Sometimes link_to and ... finding on the web? See Question&Answers more detail:os...

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

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459 views

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ruby - Should I use alias or alias_method?

I found a blog post on alias vs. alias_method. As shown in the example given in that blog post, I simply ... >Johnnie Walker Blog post link here See Question&Answers more detail:os...

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

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385 views

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ruby - Rails I18n validation deprecation warning

I just updated to rails 4.0.2 and I'm getting this warning: [deprecated] I18n.enforce_available_locales will default ... in setting it to false? See Question&Answers more detail:os...

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

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377 views

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ruby on rails - Run a single migration file

Is there an easy way to run a single migration? I don't want to migrate to a certain version I just want to run a specific one. See Question&Answers more detail:os...

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

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441 views

1 answer

ruby - Rails Model, View, Controller, and Helper: what goes where?

In Ruby on Rails Development (or MVC in general), what quick rule should I follow as to where to put logic. ... than Don't put that there. See Question&Answers more detail:os...

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

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665 views

1 answer

ruby on rails - Why does adding "sleep 1" in an after hook cause this Rspec/Capybara test to pass?

I'm using rails 4.0.5, rspec 2.14.1, capybara 2.2.1, capybara-webkit 1.1.0 and database_cleaner 1.2.0. ... a second after all the work is done? See Question&Answers more detail:os...

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

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364 views

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ruby on rails - Heroku not sending email with Gmail SMTP

The app works everything, I'm trying to use Confirmable with Devise, on my Rails app it says that the email was sent ... " dyno=web.1 connect=0ms service=4ms status=304 bytes=133...

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

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490 views

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ruby - Installing Jekyll without root

I want to set up a jekyll blog on a shared server. When I try to install Jekyll I get "You don't have ... I just making some rookie PATH 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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375 views

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ruby on rails 3 - using Liquid variables inside of a liquid tag call

I made a custom link tag in Liquid and I am trying to be able to pass liquid variables into the call for ... to pass variables into tag calls? See Question&Answers more detail:os...

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

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350 views

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ruby - Rails Browser Detection Methods

Hey Everyone, I was wondering what methods are standard within the industry to do browser detection in Rails? ... end return @users_browser 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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790 views

1 answer

ruby on rails - Bulk Insert records into Active Record table

I found that my Model.create! statements were taking a very long time to run when I added a large number ... How can I improve the performance? See Question&Answers more detail:os...

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

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597 views

1 answer

ruby - Library not loaded: /opt/local/lib/libssl.1.0.0.dylib (LoadError)

I just discovered I can no longer gem push any more and some digging led me to a need to update my RVM SSL ... ] Any ideas how to 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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932 views

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ruby on rails - GroupingError: ERROR: column must appear in the GROUP BY clause or be used in an aggregate function

I have code in my controller that is ranking albums by the highest average review rating (used code ... development and production environments. See Question&Answers more detail:os...

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

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423 views

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ruby on rails - Why use HTTP PUT and DELETE methods instead of POST?

new_story GET /story/new(.:format) {:action=>"new", :controller=>"stories"} edit_story GET /story/edit(.: ... why not just stick with 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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469 views

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ruby on rails - Make bundler use different gems for different platforms

I'm working on upgrading one of our Rails 2.3.8 apps to Rails 3, and have run into an annoying problem ... bundler team is aware of this issue. See Question&Answers more detail:os...

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

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561 views

1 answer

ruby on rails - Cannot add a NOT NULL column with default value NULL in Sqlite3

I am getting the following error while trying to add a NOT NULL column to an existing table. Why is it ... ADD "division_id" integer NOT NULL See Question&Answers more detail:os...

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

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324 views

1 answer

ruby - What is the easiest way to remove the first character from a string?

Example: [12,23,987,43 What is the fastest, most efficient way to remove the "[", using maybe a chop() but for the first character? See Question&Answers more detail:os...

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

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1.2k views

1 answer

ruby - How to solve "/usr/bin/env: ruby_executable_hooks: No such file or directory"?

I just deploy jekyll in a vps, and config git post-receive hook on it. When I push blog update to vps from my ... , could anyone give me a hint? See Question&Answers more detail:os...

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

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