rake

问题 I'm using Sinatra, and I wanted to set up some of the convenience rake tasks that Rails has, specifically rake db:seed . My first pass was this: namespace :db do desc 'Load the seed data from db/seeds.rb' task :seed do seed_file = File.join(File.dirname(__FILE__), 'db', 'seeds.rb') system("racksh < #{seed_file}") end end racksh is a gem that mimics Rails' console. So I was just feeding the code in the seed file directly into it. It works, but it's obviously not ideal. What I'd like to do is

问题 Getting the following error after running rake db:migrate rake aborted! LoadError: dlopen(/Users/scott/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/mysql2-0.4.10/lib/mysql2/mysql2.bundle, 9): Library not loaded: libssl.1.0.0.dylib Referenced from: /Users/scott/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/mysql2-0.4.10/lib/mysql2/mysql2.bundle Reason: image not found - /Users/scott/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/mysql2-0.4.10/lib/mysql2/mysql2.bundle /Users/scott/Google

问题 I get an error while trying to install the ffi gem: ~ - 16:54>gem i ffi Building native extensions. This could take a while... ERROR: Error installing ffi: ERROR: Failed to build gem native extension. rake RUBYARCHDIR=/home/mdemare/.rvm/gems/ruby-1.9.2-p136/gems/ffi-1.0.6/lib RUBYLIBDIR=/home/mdemare/.rvm/gems/ruby-1.9.2-p136/gems/ffi-1.0.6/lib /home/mdemare/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/site_ruby/1.9.1/rubygems.rb:370:in `bin_path': can't find gem rake ([">= 0"]) with executable rake

问题 When I run rake db:seed in my Rails app, I'm getting this error: invalid byte sequence in US-ASCII (Argument Error) I just added science_majors and down to my seed file, and now when I run rake db:seed it gives me this error: invalid byte sequence error Why is this, and how can I fix it? part of seeds.rb @college = College.find_or_create_by_name!('University of Pittsburgh') if @college.update_attributes( url: 'university-of-pittsburgh', public: 'Public', years: '4-year', category: 'National

问题 When trying to rake db:migrate on Heroku. I'm getting the following error. rake aborted! uninitialized constant Rake::DSL From what I've gathered this seems to be a bug with Rake 0.9.2. If I do "gem list" locally only Rake (0.8.7) appears to be installed. I've tried adding "gem 'rake', '0.8.7'" to my gem file and running bundle install but then I get the following error. You have requested: rake = 0.8.7 The bundle currently has rake locked at 0.9.2. Try running `bundle update rake` If I do

问题 I have a rake task which runs mailman under the rails environment. I'd like to ensure that rake task is always running via a daemon. My rake task is rake incoming_mail How would I go about daemonising that? 回答1: If you are on linux you could consider using start-stop-daemon. start-stop-daemon -S --pidfile /var/run/incoming_mail.pid -u rails_user -d /path/to/your/rails/app -b -a "rake incoming_mail" To later gracefully kill the process you can use most of the arguments but replace -S with -K.

问题 I have Rake version 0.9.1 but I need to use 0.8.7 for a project, and I'm fairly certain I have both version installed but it always uses 0.9.1 by default. Is there a way to specify which version of Rake to use? I'm trying to run this: rake db:drop db:create db:migrate db:seed and I get this error: You have already activated rake 0.9.1, but your Gemfile requires rake 0.8.7. Consider using bundle exec. 回答1: You can specify the version of Rake to use, in your Gemfile: gem 'rake', '0.8.7' Though

问题 Every time I want to run Rake test the task db:test:prepare is being called and it rebuilds my test environment database from schema.rb and migrations. What I would like to achive is to disable the call of db:test:prepare when I want to test make Rails application. Is it possible without modifying Rails gem? 回答1: Here's a solution I've seen around: In your Rakefile: Rake::TaskManager.class_eval do def remove_task(task_name) @tasks.delete(task_name.to_s) end end In lib/tasks/db/test.rake :

问题 I have a database set up for my Rails installation and some migrations set up. I would like to be able to reset my database back down to having no tables/constraints/etc., but can't find a reasonable way to do this without knowing the number of migrations or the timestamp of the first migration. Here are my options as I see them: rake db:migrate:reset rake db:migrate:down VERSION=20090701154839 where 20090701154839 is the timestamp associated with the first migration rake db:rollback STEP=15

问题 When I write debugger it does not start: NoMethodError: undefined method `run_init_script' for Debugger:Module from /usr/local/lib/ruby/gems/1.8/gems/ruby-debug-base-0.10.3/lib/ruby-debug-base.rb:239:in `debugger' from (irb):4 If I run rake my:task --debugger ,it returns me to console immediately. How is it possible to debug rake tasks? 回答1: Andrey Kouznetsov's answer didn't work for me using Ruby 1.9.3. The ruby-debug gem doesn't seem to support Ruby 1.9. I had to use the debugger gem: https