Recent questions tagged Ruby

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ruby on rails - Invalid date format specification in gemspec

I am getting the following error when I try to use gems in windows, and I also referred to this stackoverflow post ... : - 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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330 views

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ruby - Change the name of the :id parameter in Routing resources for Rails

I looked around on how to change the dynamic params slot and found this post that does the exact thing. The ... friendly cannot be used afaik. See Question&Answers more detail:os...

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

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424 views

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ruby - Rails Object to hash

I have the following object that has been created @post = Post.create(:name => 'test', :post_number => ... is this possible from within 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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669 views

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ruby on rails - How to do integration testing with RSpec and Devise/CanCan?

If I have a Devise model User, of which only those users with role :admin are allowed to view a certain url ... /wiki/How-To:-Test-with-Capybara See Question&Answers more detail:os...

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

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430 views

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ruby on rails - Using Devise tokens to log in, is this built in?

So, I'm trying to use tokens with Devise (version 1.0.3 with Rails 2.3.8) to let a user log in, but I'm ... it doesn't, how do I roll my own? See Question&Answers more detail:os...

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

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712 views

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ruby on rails - What is the order of ActiveRecord callbacks and validations?

I was wondering in what order are callbacks and validations called when an ActiveRecord object is created. Let's ... the validation may fail. See Question&Answers more detail:os...

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

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399 views

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ruby - Why is sum so much faster than inject(:+)?

So I was running some benchmarks in Ruby 2.4.0 and realized that (1...1000000000000000000000000000000).sum ... anything along those lines. See Question&Answers more detail:os...

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

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402 views

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ruby on rails - Remote mysql database on Heroku app

Can I use mysql database from my personal web server instead of heroku's database? I configured my production ... heroku's shared database. See Question&Answers more detail:os...

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

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354 views

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ruby on rails - Elegant way to structure models into subfolders without creating submodules

I have numerous models in my app/models folder. I'd like to clean this folder up a little bit. Move ... class Blog::Post < ActiveRecord 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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285 views

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ruby on rails - Diagnosing the cause of slow view rendering

I'm not sure when this started, but something unusual is happening in my app (run locally on a development ... 304 Not Modified (2ms) Started GET "/assets/jqueryplugins/addres...

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

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324 views

1 answer

ruby - Interpolating a string into a regex

I need to substitute the value of a string into my regular expression in Ruby. Is there an easy way to do ... dynamically/ puts "success!" 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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482 views

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ruby on rails - How do I vendorize gems for Rails3/Bundler

In Rails 2.X, I could simply copy gems into vendor/gems/gem_name, or use the rake command rake gems: ... my workflow inherently broken somehow? See Question&Answers more detail:os...

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

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502 views

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ruby on rails - How to set a file upload programmatically using Paperclip

I have a rake task to seed an application with random data using the faker gem. However, we also have images ( ... in a rake task. 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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506 views

1 answer

ruby on rails - Docker Containers can not be stopped or removed - permission denied Error

Issue: Can not stop docker containers, whenever I try to stop containers I get the following Error message, ... }/tmp/sockets EXPOSE 3000 See Question&Answers more detail:os...

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

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464 views

1 answer

ruby on rails - How do i write a cleaner date picker input for SimpleForm

I love the simple_form gem for rails but i dont like this line of code: <%= f.input :deadline, :as => ... must be possible... Please help 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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610 views

1 answer

ruby - `gem install therubyracer` fails on Mac OS X Lion

I would appreciate some help in getting gem install therubyracer to work. Here is the error: $ gem install therubyracer ... .9.24 (via homebrew) See Question&Answers more detail:os...

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

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482 views

1 answer

ruby on rails - How to replace a hash key with another key

I have a condition where, I get a hash hash = {"_id"=>"4de7140772f8be03da000018", .....} and I want ... every key and I want no underscores See Question&Answers more detail:os...

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

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388 views

1 answer

ruby - What is the purpose of "!" and "?" at the end of method names?

Sometimes I see methods in Ruby that have "?" and "!" at the end of them, e.g: name = "sample_string ... is? Are they just syntax sugarcoating? See Question&Answers more detail:os...

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

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400 views

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ruby - Get index of array element faster than O(n)

Given I have a HUGE array, and a value from it. I want to get index of the value in array. Is there ... that will boost up 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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605 views

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ruby on rails 3 - Remove duplicate records based on multiple columns?

I'm using Heroku to host my Ruby on Rails application and for one reason or another, I may have some ... record queries easily. Any suggestions? See Question&Answers more detail:os...

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

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633 views

1 answer

ruby - Block comments in html.erb templates in rails

How do you comment out html mixed with ruby code? some text <% ... %> more text <%= ... %> something ... ' of doing this in rails? 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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384 views

1 answer

ruby - What is the difference between pluck and collect in Rails?

Here are two sample codes. First one with collect: User.first.gifts.collect(&:id) Second one with pluck: ... in performance or something else? See Question&Answers more detail:os...

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

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455 views

1 answer

ruby on rails - Best way to add comments in erb

How do we add comments in erb files, if we do not want them to be generated into the html content? See Question&Answers more detail:os...

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

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408 views

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ruby on rails - Bundler: Command not found

I am hosting on a vps, ubuntu 10.04, rails 3, ruby and mysql installed correctly by following some tutorials. If I ... .02/lib/ruby/gems/1.8/ See Question&Answers more detail:os...

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

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343 views

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ruby - Rails: Is there a rails trick to adding commas to large numbers?

Is there a way to have rails print out a number with commas in it? For example, if I have a number 54000000.34, ... out "54,000,000.34" 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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381 views

1 answer

ruby - gem install fails with openssl failure

I tried to install cocoapods (http://cocoapods.org/) on my OSX Mountain Lion. moshe-mbp:~ moshem$ gem install ... (>= 0) in any repository See Question&Answers more detail:os...

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

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314 views

1 answer

ruby - Installing in Homebrew errors

Attempting to install rvm and ruby 1.9.2 I already installed homebrew and git, but couldn't get complete updates ... write to /usr/local/Cellar See Question&Answers more detail:os...

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

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725 views

1 answer

ruby on rails - undefined method `source_index' for Gem:Module (NoMethodError)

I'm running a Rails 2.3.5 application and upon running script/server I am shown the following: ./script/../ ... can get some quick help. 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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