Recent questions tagged ruby

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ruby on rails - Scaffolding ActiveRecord: two columns of the same data type

Another basic Rails question: I have a database table that needs to contain references to exactly two different ... anywhere on the Internet. See Question&Answers more detail:os...

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

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836 views

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ruby on rails 3 - Params hash keys as symbols vs strings

<%= params[:action] %> and <%= params['action'] %> display index but what is the difference between this syntax? See Question&Answers more detail:os...

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

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683 views

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ruby - Why does .all? return true on an empty array?

Using Ruby I want to evaluate all items in an array, and return true if they all pass a conditional test. I ... how should I modify the method? See Question&Answers more detail:os...

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

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663 views

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ruby - Command for displaying a gem's dependencies?

Is there a command that tells you the other gems that a gem depends on? Also, is there a way to auto install the gem's dependencies? See Question&Answers more detail:os...

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

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ruby - Is it possible to give a sub-module the same name as a top-level class?

Background: ruby thinks I'm referencing a top-level constant even when I specify the full namespace How do I ... `require' from runner.rb:2 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

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ruby on rails - How can I reset a factory_girl sequence?

Provided that I have a project factory Factory.define :project do |p| p.sequence(:title) { |n| "project # ... ) Thanks in advance, Best regards. See Question&Answers more detail:os...

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

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813 views

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ruby - What is difference between "p" and "pp"?

I did do some searching, but can't find an answer to simple question. What is difference between p and pp ... that what are the differences? See Question&Answers more detail:os...

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

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758 views

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ruby on rails - first_or_create vs find_or_create_by

first_or_create seems much less documented, so I wondered if it was just because the two methods are synonymous. See Question&Answers more detail:os...

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

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736 views

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ruby - Rspec: Should be (this or that)

What would be the best way to write the rspec in a situation where either of two (or more) outcomes are ... was hoping for a better solution. See Question&Answers more detail:os...

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

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ruby - How do you mark a Cucumber Scenario as Pending

How do I mark a cucumber scenario as pending so it doesn't get counted as a passed? Scenario: Guest should not ... able to mark is as pending? See Question&Answers more detail:os...

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

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820 views

1 answer

ruby on rails - Could not find thread_safe-0.3.0 in any of the sources

I get this error while running bundle install in a rails app, I thought the latest version is 0.2.0...could ... .3.0 in any of the sources 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

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ruby - Upload images in database

I want save uploaded images in a bytea column in my PostgreSQL database. I'm looking for advice on how to ... driver to connect to PostgreSQL. See Question&Answers more detail:os...

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

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763 views

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ruby - rails server cannot start; getaddrinfo: nodename nor servname provided, or not known (SocketError)

I have not found a solution to the problem, however someone did already ask about the same problem a few days ago ... :in `<main>' Please help. See Question&Answers more detail:os...

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

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684 views

1 answer

ruby on rails - How to make ActiveRecord ThreadSafe

How can I make the following controller threadsafe in rails 4 with postgresql: def controller_action if Model.exists( ... I only want 1. See Question&Answers more detail:os...

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

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955 views

1 answer

ruby - Make Rails ignore daylight saving time when displaying a date

I have a date stored in UTC in my Rails app and am trying to display it to a user who has "Eastern Time ... Eastern Time (US & Canada)").no_dst See Question&Answers more detail:os...

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

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938 views

1 answer

ruby on rails - Errno::EACCES: Permission denied @ unlink_internal when running rake test:models

I'm playing with rails 4. I just created very simple test for my model but when I try to execute "rake ... could be source of this problem? See Question&Answers more detail:os...

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

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758 views

1 answer

ruby on rails 3 - How can I make carrierwave not save the original file after versions are processed?

I'm using CarrierWave for my file uploads in Rails 3.1, and I'm looking for a way to save server space. ... the uploader class? Thanks, --Mark See Question&Answers more detail:os...

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

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719 views

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ruby on rails - Why am I getting this Passenger error Could not find rake-0.9.2.2 in any of the sources?

I just created a new empty Rails app, it's almost empty. I created it just to try to pinpoint the problem, ... bundler gem and the other ones. See Question&Answers more detail:os...

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

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508 views

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ruby on rails 3 - ActiveRecord query changing when a dot/period is in condition value

See the updates at the bottom. I've narrowed this down significantly. I've also created a barebones app ... value of a WHERE condition. See Question&Answers more detail:os...

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

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629 views

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ruby - How do I summarize array of integers as an array of ranges?

I'd like to take input such as: [1,2,4,5,6,7,9,13] and turn it into something like the following: ... sub-array represents a range of integers. See Question&Answers more detail:os...

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

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759 views

1 answer

ruby on rails - How to make LIKE clause case-insensitive?

I'm using a LIKE clause in Ruby On Rails. When I try to search for records by typing "more" it doesn't return ... %", "%#{params[:search]}%") See Question&Answers more detail:os...

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

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731 views

1 answer

ruby - Rails 3 Order By Count on has_many :through

I have an application where I can list Items and add tags to each Item. The models Items and Tags are associated ... can I do that? Regards. See Question&Answers more detail:os...

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

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691 views

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ruby on rails - Escaping </script> tag inside javascript

I'm using backbone, and the general way for passing the collections when the page load is window.router = new Routers. ... ); //]]> </script> See Question&Answers more detail:os...

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

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638 views

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ruby - How do I find .index of a multidimensional array

Tried web resources and didnt have any luck and my visual quick start guide. If I have my 2d/ ... solving my little maze problem See Question&Answers more detail:os...

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

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666 views

1 answer

ruby and accdb (ms access)

If I have a base windows xp system, ruby and an ms access 2007 file (say c:/foo/bar.accdb) file, ... . What is the specific connection string. See Question&Answers more detail:os...

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

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833 views

1 answer

ruby on rails - Devise ignoring custom strategy

This is just plain weird. I've got Rails 3 RC running with Devise installed. I've defined a custom strategy ... good way to debug Devise/Warden? See Question&Answers more detail:os...

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

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899 views

1 answer

ruby on rails - turbolinks issues with bootstrap modal

I doing a modal like this: Link that shows the modal: <%= link_to "vers?o resumida", resumed_rep_life_animal_path( ... ... Thanks in advance. See Question&Answers more detail:os...

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

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764 views

1 answer

ruby - How can I fix an accidental 'sudo bundle install dir_name'?

I accidentally ran sudo bundle install smtp_mail and now all my gems are in this directory called smtp_mail inside my ... way I can revert back? See Question&Answers more detail:os...

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

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