rails logger error

error:in ' require ': Cannot load such file--sqlite3/sqlite3_native (Loaderror)Remove the D:\Ruby22-x64\lib\ruby\gems\2.2under Ruby first. 0 \cache Directory, then enter in cmd: Gem install Sqlite3, and finally into D:\Ruby22-x64\lib\ruby\gems\2.2. 0\specifications directory, find sqlite3-1.3. -x64-mingw32.gemspec file, change s.require_paths=["lib"to s.require_paths= [ " lib/sqlite3_native "]Error:d:/ruby21-x64/lib/ruby/gems/2.1.0/gems/execjs-2.6.0/lib/execjs/runtimes ' AutoDetect ': Could not

reverting migration" Provides a solution: Change the Self.change to Self.up and Self.down methods.Modified migration:Class Changevmtempcolumns Execute rake db:rollback, Success!Reason: I originally thought that in rails, Self.change method directly to the Self.up and Self.down two together, execution and rollback only with a change method can be, but after this example, I think the Self.change method execution rollback, can only be executed by defaul

Tag:bloghttpiofor Issues ctinewsql rails new demo--database=mysql last error Gem files would remain installed in d:/billfiles/rails_dev/ruby193/lib/ruby/gems/1.9.1/gems/mysql2-0.3.15 for Inspection. Results logged to D:/BILLFILES/RAILS_DEV/RUBY193/LIB/RUBY/GEMS/1.9.1/EXTENSIONS/X86-MINGW32/1.9.1/ Mysql2-0.3.15/gem_make.out An error occurred while installing

1. The 403 error is reported because the user who initiates Nginx is nobody by default and does not have access to the project directory.user myName; Worker_processes 2;2. reported 404 error Because passenger is not configured in nginx.confserver { listen ; server_name localhost; passenger_enabled on; 3. Missing ' Secret_token ' and ' secret_key_base ' for ' production ' enviro

Context DescriptionOriginally the system is 15.10, helpless only support 1 years, so today upgrade 16.04, the environment after a good run rake migratte error 1 task:d efault =>: Migrate 2 3 desc " run migrations 4 task:migrate do 5 6 ActiveRecord :: Migrator.migrate ( db/migrate ' , Env[ " version ' ]? Env[ version ].to_i:nil) 7 end nameerror:uninitialized constant Activerecord::migrator::zlibWhen a face was forced, the original