Question

我正在切换到Heroku托管。我在我的本地机器上有当前生产数据库的副本（> 100 M），我无法将其推送到heroku。

我一遍又一遍地得到同样的错误：

Taps Server Error: undefined method `symbolize_keys' for nil:NilClass

这似乎与数据库中的某些NULL值有关（并非所有）。有想法该怎么解决这个吗？谢谢！

以下是完整输出：

!!! Caught Server Exception
HTTP CODE: 500
Taps Server Error: undefined method `symbolize_keys' for nil:NilClass
/app/lib/taps/data_stream.rb:183:in `parse_json'/app/lib/taps/server.rb:69:in 
POST /sessions/:key/push/verify_stream /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:863:in
call/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:863:in 
route /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:521:in
instance_eval /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:521:in
route_eval /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:500:in 
route!/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:497:in 
catch/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:497:in 
route!/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:476:in 
each/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:476:in 
route!/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:601:in 
dispatch! /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:411:in
call! /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:566:in 
instance_eval /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:566:in
invoke/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:566:in 
catch /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:566:in
invoke /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:411:in
call!/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:399:in 
call/app/.bundle/gems/ruby/1.8/gems/rack-1.2.1/lib/rack/auth/basic.rb:25:in 
call /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:979:in 
call /app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in 
synchronize/app/.bundle/gems/ruby/1.8/gems/sinatra-1.0/lib/sinatra/base.rb:979:in
call/home/heroku_rack/lib/static_assets.rb:9:in 
call'/home/heroku_rack /lib/last_access.rb:15:in 
call'/app/.bundle/gems/ruby/1.8/gems/rack-1.2.1/lib/rack/urlmap.rb:47:in 
call'/app/.bundle/gems/ruby/1.8/gems/rack-1.2.1/lib/rack/urlmap.rb:41:in 
each'/app/.bundle/gems/ruby/1.8/gems/rack-1.2.1/lib/rack/urlmap.rb:41:in 
call'/home/heroku_rack/lib/date_header.rb:14:in 
call'/app/.bundle/gems/ruby/1.8/gems/rack-1.2.1/lib/rack/builder.rb:77:in 
call'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/connection.rb:76:in         
pre_process'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/connection.rb:74:in 
catch'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/connection.rb:74:in       
pre_process'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/connection.rb:57:in
process'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/connection.rb:42:in     
receive_data'/app/.bundle/gems/ruby/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in 
run_machine'/app/.bundle/gems/ruby/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in 
run'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/backends/base.rb:57:in 
start'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/server.rb:156:in 
start'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/controllers/controller.rb:80:in 
start'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/runner.rb:177:in 
send'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/runner.rb:177:in 
run_command'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/lib/thin/runner.rb:143:in 
run!'/app/.bundle/gems/ruby/1.8/gems/thin-1.2.7/bin/thin:6/usr/ruby1.8./bin/thin:19:in  
load'/usr/ruby1.8.7/bin/thin:19

Answer 1

Heroku博客对使用水龙头将大数据推送到heroku的策略进行了很好的讨论

要分解作业，请仅按特定表格 heroku db：pull --tables日志，标签
使用崩溃日志文件恢复传输 heroku db：pull --resume-filename session_file.dat

有关详细信息，请参阅：http://blog.heroku.com/archives/2010/4/21/supporting_big_data_part_1/

Answer 2

当我拼错了表格列的名称时，我遇到了这个错误。例如：

create_table "tags", :force => true do |t|
   t.stinrg    "name"
 end

名称t.stinrg不正确且应为t.string。检查所有整数字段。特别是因为你有add_column因为rails 通常会生成错误的表名，当我add_column时，我会将其拼错为add_column :tags, :post_count, :integer

heroku db：push throws“点击服务器错误：未定义的方法`symbolize_keys'为nil：NilClass”

2 个答案: