Recent questions tagged Ruby

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ruby on rails - "render :nothing => true" returns empty plaintext file?

I'm on Rails 2.3.3, and I need to make a link that sends a post request. I have one that ... file named "resend_confirm_email." What gives? See Question&Answers more detail:os...

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

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431 views

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ruby on rails - Determine if ActiveRecord Object is New

How can I check if an ActiveRecord object is new or is already persisted? See Question&Answers more detail:os...

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

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ruby - How to get Sinatra to auto-reload the file after each change?

I am using # my_app.rb load 'index.rb' and start the sever like this ruby my_app.rb but it never reload any ... page. Did I miss anything 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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ruby on rails - Deploying a Git subdirectory in Capistrano

My master branch layout is like this: / <-- top level /client <-- desktop client source files /server <-- ... to only pull down the Rails app. See Question&Answers more detail:os...

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

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380 views

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ruby - Ubuntu rails install fails on zlib

I've just moved over to Ubuntu 8.10 as my dev box; it's my first serious foray into Linux as a daily- ... gems each and separately, to no avail. See Question&Answers more detail:os...

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

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616 views

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ruby on rails - You have already activated rake 0.9.0, but your Gemfile requires rake 0.8.7

I'm trying to run rails project, I get Your bundle is complete! Use `bundle show [gemname]` to see where a ... .8.7 while doing rake db:migrate See Question&Answers more detail:os...

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

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485 views

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ruby on rails - Do I need to manually create a migration for a HABTM join table?

I'm struggling now to get HATBM working correctly. I have a beaten scanario: articles and tags. I presume, HABTM should ... 'm using Rails 2.2.2 See Question&Answers more detail:os...

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

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ruby on rails - Log to database instead of log files

I'm interested in sending all Rails application logging to a database (MySQL or MongoDB) either in addition to or ... doing in this same light. See Question&Answers more detail:os...

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

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546 views

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ruby on rails - execJs: 'Could not find a JavaScript runtime' but execjs AND therubyracer are in Gemfile

I'm getting this error: rake aborted! Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs, ... 9 How can I 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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663 views

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ruby on rails - Case statement with multiple values in each 'when' block

The best way I can describe what I'm looking for is to show you the failed code I've tried thus far: case ... should I try a massive if block? 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

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ruby on rails - How to use RSpec's should_raise with any kind of exception?

I'd like to do something like this: some_method.should_raise <any kind of exception, I don't care> How should I ... exception ... doesn't 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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475 views

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ruby on rails - Add a CSS class to <%= f.submit %>

My question is easy: <%= f.submit %> Where does the class declaration go? I'm getting errors on multiple attempts. See Question&Answers more detail:os...

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

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446 views

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ruby - File.expand_path("../../Gemfile", __FILE__) How does this work? Where is the file?

ENV["BUNDLE_GEMFILE"] = File.expand_path("../../Gemfile", __FILE__) I'm just trying to access a .rb file from ... it is finding the gem file. See Question&Answers more detail:os...

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

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552 views

1 answer

ruby on rails - Role does not exist and unable to create database when using PostgreSQL

I am using Heroku for my application and it requires PostgreSQL but you can still use SQLite3 for development. ... ://gist.github.com/1522188 See Question&Answers more detail:os...

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

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412 views

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ruby on rails - Override ActiveRecord attribute methods

An example of what I'm talking about: class Person < ActiveRecord::Base def name=(name) super(name. ... something wrong with this example? See Question&Answers more detail:os...

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

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628 views

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ruby on rails - How to return an empty ActiveRecord relation?

If I have a scope with a lambda and it takes an argument, depending on the value of the argument, I ... in the query being short-circuited. 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 - TCPServer Error: Address already in use - bind(2)

Jekyll was working fine for me few weeks back but now all of a sudden it gives me the following error: ... ve tried re-installing as well. See Question&Answers more detail:os...

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

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795 views

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ruby on rails 3 - How do I remove the Devise route to sign up?

I'm using Devise in a Rails 3 app, but in this case, a user must be created by an existing user, who ... users, path_names: { sign_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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637 views

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ruby on rails - How do I clear stuck/stale Resque workers?

As you can see from the attached image, I've got a couple of workers that seem to be stuck. Those ... HireFire to automatically scale workers. See Question&Answers more detail:os...

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

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590 views

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ruby - Update just one gem with bundler

I use bundler to manage dependencies in my rails app, and I have a gem hosted in a git repository included ... to update just one specific gem? See Question&Answers more detail:os...

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

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373 views

1 answer

ruby on rails - How do you delete an ActiveRecord object?

How do you delete an ActiveRecord object? I looked at Active Record Querying and it does not have anything on ... based on a where clause? See Question&Answers more detail:os...

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

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379 views

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ruby - How to reverse a 'rails generate'

I want to delete all the files it created and roll back any changes made, but not necessarily to the database ... changes might have been made? See Question&Answers more detail:os...

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

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1.1k views

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ruby on rails 4 - strftime error while switching my database from sqlite3 to mysql in Rails4

Recently i changed my database from sqlite3 to mysql.When i ran my project i am getting this error in one of the ... , date_of_birth) = '28/03') See Question&Answers more detail:os...

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

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525 views

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ruby - Bundle command not found. Bad Interpreter

I am having some issues with the bundler gem. When I run "gem list" I can see that bundler is installed. ... gitin; C:Program Files (x86)gitcmd See Question&Answers more detail:os...

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

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278 views

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ruby - Can the java cookbook be used to install a local copy of oracle java?

I have been trying to learn chef recently because I was planning on using it for deploying server config and ... recipes/java_dev_server.rb ==== See Question&Answers more detail:os...

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

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479 views

1 answer

ruby - How to skip the first line of a CSV file and make the second line the header

Is there a way to skip the first line of a CSV file and make the second line act as the header? I have ... so I can take advantage of headers. See Question&Answers more detail:os...

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

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414 views

1 answer

ruby on rails - Rake Cron job error

0/5 * * * * /bin/bash -l -c 'cd /home/mss/ruby/example && RAILS_ENV=development /usr/local/bin/ ... command line Any help will be appreciated. See Question&Answers more detail:os...

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

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346 views

1 answer

ruby on rails 3 - How do I match an entire day to a datetime field?

I have a table for matches. The table has a column named matchdate, which is a datetime field. If I have ... where datetime in date" function? See Question&Answers more detail:os...

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

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