Recent questions tagged ruby

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ruby on rails 3 - Ignore header line when parsing CSV file

How can the header line of the CSV file be ignored in ruby on rails while doing the CSV parsing!! 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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623 views

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ruby on rails - Keep a table out of schema.rb during migrations

As a follow-on to an earlier question about not reloading a huge, persistent table when I run my tests, I ... specific table out of schema.rb? 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 - rails assets pipeline "Cannot allocate memory - nodejs"

we've just upgraded to Rails 3.2.5 from Rails 3.0.7 and using the assets-pipeline compilation on the fly for ... folder for example ! 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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672 views

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ruby on rails - AWS::S3::S3Object.url_for - How to do this with the new AWS SDK Gem?

I've been using this forever with paperclip and aws-s3: def authenticated_url(style = nil, expires_in = 90.minutes) ... the new AWS-SDK gem? See Question&Answers more detail:os...

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

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610 views

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ruby - Getting typed results from ActiveRecord raw SQL

In Sequel, I can do: irb(main):003:0> DB["select false"].get => false Which returns a false boolean. I' ... a typed result instead of a 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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768 views

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ruby on rails - Render controller action from another controller

I think the code is more explicit option A class RedirectController < ApplicationController def index redirect_to : ... view) How? 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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658 views

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ruby - Bundler and wrong binstubs?

I run rails s or bundle exec rails s and I get this warning: Bundler is using a binstub that was created for ... at the start of this post. 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 on rails - When to use Helpers vs Model

I'm new to Rails and just wondering when I should put code into a Helper as opposed to putting the code into ... thumb' so to speak for this? 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 - Convert an array to hash, where keys are the indices

I am transforming an array into a hash, where the keys are the indices and values are the elements at that index. ... "better") way to do 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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ruby on rails - Get path to ActiveStorage file on disk

I need to get the path to the file on disk which is using ActiveStorage. The file is stored locally. When ... << CombinePDF.load(att_path)} See Question&Answers more detail:os...

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

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865 views

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ruby on rails - How to set the ActionMailer default_url_options's :host dynamically to the request's hostname?

I am trying to set the :host for action mailer default url options. I have the below set in all the environment ... host, not by hardcoding...? See Question&Answers more detail:os...

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

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614 views

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ruby - Is there an equivalent to `Array::sample` for hashes?

I'm looking to extract n random key-value pairs from a hash. 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

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ruby on rails - Is it possible to configure Paperclip to produce HTTPS urls for S3?

I'm using Paperclip to manage user-uploaded images on a site that is served entirely under HTTPS. In order ... com/images/6/large/image123.JPG 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

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ruby - Rails 3. How to add a helper that ActiveAdmin will use?

I'm creating a helper to be used by Formtastic but I get the undefined local variable or method ... app/helpers/active_admin/view_helpers.rb See Question&Answers more detail:os...

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

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881 views

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ruby - Properly converting a CMYK image to RGB with RMagick

I have been using the below to do a color conversion if @image.colorspace == Magick::CMYKColorspace # @image. ... better, but still off. 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 - Why is sudo: bundle command not found?

Why is command "bundle" not found when using sudo: [root@desktop gitlab]# sudo -u git -H bundle exec rake ... is currently not available.". See Question&Answers more detail:os...

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

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589 views

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ruby on rails 3 - factory girl nested factory

I have an account model that belongs_to a role model. factory :role do name "student" end factory :account do ... best way to accomplish this? See Question&Answers more detail:os...

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

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565 views

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ruby - Printing an ASCII spinning "cursor" in the console

I have a Ruby script that does some long taking jobs. It is command-line only and I would like to show that the ... sleep(0.1) print "" } See Question&Answers more detail:os...

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

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791 views

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ruby - Maintaining cookies between Mechanize requests

I'm trying to use the Ruby version of Mechanize to extract my employer's tickets from a ticket management system ... What am I doing wrong? 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 - How can I install an older version of Jekyll?

I'd like to install Jekyll version 1.5.1 (on a Mac). Is it possible to do this? I found something ... to install an older version. 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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543 views

1 answer

ruby on rails - Error while trying to load the gem 'devise. ActiveSupport: Duration can't be coerced into Integer

I've been trying to fix this error for a while now without finding any helpful, help please. I'm trying to ... by running task with --trace) See Question&Answers more detail:os...

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

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524 views

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ruby - Rails Console Not Loading

When trying to start rails console I keep getting the following error Users/rigelstpierre/.rvm/rubies/ruby-1.9.3- ... ? Rails 3.2.2 application See Question&Answers more detail:os...

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

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492 views

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ruby - Rails: Copying attributes from an object to another using the "attributes" method

Let model Quote have attributes [price, description] Let model Invoice have attributes [price, description, priority] ... a quote can accept? See Question&Answers more detail:os...

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

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686 views

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ruby - How to override a column in Rails model?

I have a model for one of my database tables. I want to override the column name for that particular table. ... column name itself. 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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929 views

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ruby on rails - rake db:migrate is not working

I'm working through the rails tutorial and have gotten stuck. Starting at Listing 8.16 I have made the following ... how to force it to run. See Question&Answers more detail:os...

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

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480 views

1 answer

ruby on rails - Failed to build gem native extension

End result is I'm trying to get Ruby on Rails installed on my OS 10.7.3, but having various ... config.status: executing libtool commands See Question&Answers more detail:os...

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

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568 views

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ruby - Differences between Proc and Lambda

Ruby has differences between Procs created via Proc.new and lambda (or the ->() operator in 1.9). It ... the motivations behind this behavior? See Question&Answers more detail:os...

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

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664 views

1 answer

ruby - How to use xmlns declarations with XPath in Nokogiri

I'm using Nokogiri::XML to parse responses from Amazon SimpleDB. The response is something like: <SelectResponse ... horribly like a hack. See Question&Answers more detail:os...

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

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