rake aborted! ArgumentError: wrong number of arguments (2 for 0..1)
rake aborted! ArgumentError: wrong number of arguments (2 for 0..1)
我的 rails 任务如下所示：
desc 'Delete records older than 7 days'
task :delete_old_records => :environment do
Post.delete_all('created_at < ?', 7.days.ago)
end
我尝试使用以下方法执行任务：
rake delete_old_records --trace
并导致此错误：
** Invoke delete_old_records (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute delete_old_records
rake aborted!
ArgumentError: wrong number of arguments (2 for 0..1)
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activerecord-4.2.0/lib/active_record/relation.rb:453:in `delete_all'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activerecord-4.2.0/lib/active_record/querying.rb:8:in `delete_all'
/home/codio/workspace/lib/tasks/delete_old_records.rake:3:in `block in <top (required)>'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in `call'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in `block in execute'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in `each'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in `execute'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:165:in `invoke'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:150:in `invoke_task'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `each'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `block in top_level'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:115:in `run_with_threads'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:100:in `top_level'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:78:in `block in run'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:176:in `standard_exception_handling'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:75:in `run'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/bin/rake:33:in `<top (required)>'
/home/codio/.rbenv/versions/2.1.5/bin/rake:23:in `load'
/home/codio/.rbenv/versions/2.1.5/bin/rake:23:in `<main>'
有谁知道我在这里做错了什么？我的模型看起来像：
class Post < ActiveRecord::Base
end
和 rake-gem 版本是 rake-10.4.2
你可以这样做：
timestamp = Time.now - 7.days
posts = Post.where('created_at < ?', timestamp)
posts.each { |post| post.destroy }
7.days.ago return 是 ActiveSupport::TimeWithZone 的 class。
Time.now - 7.days 将 return 一个时间对象，这就是你需要的。
或者你可以试一试：
posts = Post.where('created_at < ?', timestamp).destroy_all
不太确定你这边出了什么问题，但他在我的控制台中使用基本 Rails 模型为我工作。
试试这个
Post.delete_all(['created_at < ?', 7.days.ago])
我的 rails 任务如下所示：
desc 'Delete records older than 7 days'
task :delete_old_records => :environment do
Post.delete_all('created_at < ?', 7.days.ago)
end
我尝试使用以下方法执行任务：
rake delete_old_records --trace
并导致此错误：
** Invoke delete_old_records (first_time)
** Invoke environment (first_time)
** Execute environment
** Execute delete_old_records
rake aborted!
ArgumentError: wrong number of arguments (2 for 0..1)
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activerecord-4.2.0/lib/active_record/relation.rb:453:in `delete_all'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/activerecord-4.2.0/lib/active_record/querying.rb:8:in `delete_all'
/home/codio/workspace/lib/tasks/delete_old_records.rake:3:in `block in <top (required)>'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in `call'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:240:in `block in execute'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in `each'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:235:in `execute'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/2.1.0/monitor.rb:211:in `mon_synchronize'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/task.rb:165:in `invoke'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:150:in `invoke_task'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `each'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:106:in `block in top_level'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:115:in `run_with_threads'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:100:in `top_level'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:78:in `block in run'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:176:in `standard_exception_handling'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/lib/rake/application.rb:75:in `run'
/home/codio/.rbenv/versions/2.1.5/lib/ruby/gems/2.1.0/gems/rake-10.4.2/bin/rake:33:in `<top (required)>'
/home/codio/.rbenv/versions/2.1.5/bin/rake:23:in `load'
/home/codio/.rbenv/versions/2.1.5/bin/rake:23:in `<main>'
有谁知道我在这里做错了什么？我的模型看起来像：
class Post < ActiveRecord::Base
end
和 rake-gem 版本是 rake-10.4.2
你可以这样做：
timestamp = Time.now - 7.days
posts = Post.where('created_at < ?', timestamp)
posts.each { |post| post.destroy }
7.days.ago return 是 ActiveSupport::TimeWithZone 的 class。
Time.now - 7.days 将 return 一个时间对象，这就是你需要的。
或者你可以试一试：
posts = Post.where('created_at < ?', timestamp).destroy_all
不太确定你这边出了什么问题，但他在我的控制台中使用基本 Rails 模型为我工作。
试试这个
Post.delete_all(['created_at < ?', 7.days.ago])