Recent questions tagged ruby

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ruby on rails - pdfkit does not style pdfs

I have a rails 3.1 app that creates pdf documents using pdfkit, and everything works as specified, except for the fact ... :media => "all" %> See Question&Answers more detail:os...

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

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855 views

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ruby - Get absolute (base) url in sinatra

Right now, I do a get '/' do set :base_url, "#{request.env['rack.url_scheme']}://#{request.env['HTTP_HOST']} ... . How do you get your base url? See Question&Answers more detail:os...

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

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592 views

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ruby on rails - Reload rubygem in IRB

Is there a way to "reload" or "refresh" a rubygem in memory? As i'm playing in irb, occasionally I like to ... a better way...what is 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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553 views

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ruby - Sorting an array based on an attribute that may be nil in some elements

I have an array of objects [<#a star=1 val=1>, <#a star=nil val=3> , <#a star=2 val=2>] i ... |a| a.starred }.reverse @answers=starred+@answers See Question&Answers more detail:os...

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

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602 views

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ruby on rails 3 - SASS global variables not being passed to partials

Basically I have a structure that used to work perfectly in 3.0.x and now it breaks with undefined variable ... , I'd love suggestions. See Question&Answers more detail:os...

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

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707 views

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ruby on rails - ActiveModel::MassAssignmentSecurity::Error: Can't mass-assign protected attributes

If I try to execute the following code: hassle = rota.hassles.create(:sender => user1, :receiver => user2, :type = ... it, I get an sql error. See Question&Answers more detail:os...

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

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1.2k views

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ruby on rails - ArgumentError: Factory not registered

I am trying to get factory girl to run with rspec in my rails 4.1.1 app. Problem is when I run ... are supposed to get loaded automatically. See Question&Answers more detail:os...

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

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644 views

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ruby on rails - zsh: command not found: mysql

Trying to use MySQL for rails app and downloaded it from dev.mysql.com. After successfully installing the package ... get Mysql up and running. 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 - Bundler could not find compatible versions for gem "bundler":

Complete new person to Ruby and Rails here... Have tried some tutorials in the past, but that's about it. I'm ... . Thank you all for your 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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811 views

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ruby - rails erb form helper options_for_select :selected

I have an edit form in erb. <%= form_for @animal do |f| %> Within the code I have a select with options ... course that is not a viable option. See Question&Answers more detail:os...

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

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494 views

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ruby on rails - Print in ERB without <%=?

Sometimes it's more convenient to print in <%%>. How to do it in Rails? See Question&Answers more detail:os...

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

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513 views

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ruby on rails - How do I get a Date from a week number?

I want to find all items created in a given week, and pass in a week number param. (created_at is a ... and end_of_week in the scope.) 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 - How to catch Errno::ECONNRESET class in "case when"?

My application (Ruby 1.9.2) may raise different exceptions, including net-connection breaks. I rescue Exception ... Prints: Errno::ECONNRESET 3 See Question&Answers more detail:os...

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

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779 views

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ruby - Install Bundler gem using Ansible

I am trying to install Bundler on my VPS using Ansible. I already have rbenv set up and the global ruby is 2. ... Why can't bundle be located? 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 - What is the best way to use Redis in a Multi-threaded Rails environment? (Puma / Sidekiq)

I'm using Redis in my application, both for Sidekiq queues, and for model caching. What is the best way ... are greatly appreciated. Thank you! See Question&Answers more detail:os...

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

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512 views

1 answer

ruby - Hot deploy on Heroku with no downtime

A bad side of pushing to Heroku is that I must push the code (and the server restarts automatically) before running ... .and I have no downtime! See Question&Answers more detail:os...

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

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470 views

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ruby - Array to Hash : words count

I have array of words and I want to get a hash, where keys are words and values are word count. Is there any ... [word] += 1 } return result See Question&Answers more detail:os...

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

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545 views

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ruby on rails - What's the difference between find, where and find_by_id?

What's the difference between find, where and find_by_id? They all work when you try to find a user given an ID. See Question&Answers more detail:os...

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

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461 views

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ruby - Get class location from class object

I have a bunch of code to look at, and now it is debugging time. Since I have never been a fan of Ruby's debugger ... : I'm using Ruby 1.8.7. See Question&Answers more detail:os...

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

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421 views

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ruby on rails - Why does false invalidate validates_presence_of?

Ok steps to reproduce this: prompt> rails test_app prompt> cd test_app prompt> script/generate model event_service ... I doing something 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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1.1k views

1 answer

ruby on rails - Validate Before Destroy

I have three classes: School, Account, and Administratorship. School has_many :administatorships has_many :administrators ... elegant 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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438 views

1 answer

ruby on rails - Thinking Sphinx and acts_as_taggable_on plugin

I installed Sphinx and Thinking Sphinx for ruby on rails 2.3.2. When I search without conditions search works ok. ... 's going on? Thanks, Brian See Question&Answers more detail:os...

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

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491 views

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ruby - Logging all method calls in a Rails app

Is there an easy way to log all method calls in a Rails app? My main use for this would be in testing (and in ... rspec with the '-b' option). See Question&Answers more detail:os...

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

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411 views

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ruby - Making multiple HTTP requests asynchronously

require 'net/http' urls = [ {'link' => 'http://www.google.com/'}, {'link' => 'http://www.yandex.ru/' ... way to do it? Is Fiber suited for that? See Question&Answers more detail:os...

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

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576 views

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ruby on rails - validates_associated not checking existence of associations

Can anyone figure out what's going on here? I was able to get my code to work the way I want ... how validates_associated is supposed to work? See Question&Answers more detail:os...

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

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445 views

1 answer

ruby on rails - heroku mongohq and mongoid Mongo::ConnectionFailure

UPDATE 9th june 2012: Setup with mongoid 3.0.0.rc at heroku, see this gist: https://gist.github.com/2900804 ... mind create the tag 'mongohq'? See Question&Answers more detail:os...

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

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447 views

1 answer

ruby on rails 3 - Insert a non-input row into a Formtasic form

I am using Formtastic 2.1.1 in Rails 3.2 (with Active Admin) and I want to insert a row into my ... Has anyone done this with Formtastic before? See Question&Answers more detail:os...

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

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550 views

1 answer

ruby - Multiple Sinatra apps using rack-mount

I have a question regarding using rack-mount with Sinatra. I've got two classic-style Sinatra apps. Let's call ... a better solution than that? See Question&Answers more detail:os...

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

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