我的应用程序中的每个 UITextfield 都有问题。每当UITextfield实例成为第一响应者时,我的应用都会崩溃,并显示以下错误消息。
有关该应用程序的一些详细信息:
user defined runtime attributes
了我想摆脱的应用(使用PixateFreestyle SDK来为UI设置样式的遗留物),但故事板中仍然有一些属性。[NSTaggedPointerString objectAtIndex:]
其上设置了符号断点,但在应用本身崩溃之前,它似乎并未捕获到该错误来自Xcode的日志:
2015-10-26 12:49:16.034 MY_APP[1477:641273] -[NSTaggedPointerString objectAtIndex:]:
unrecognized selector sent to instance 0xa00000000006c6e2
2015-10-26 12:49:16.034 MY_APP[1477:641273] *** Terminating app due to uncaught
exception 'NSInvalidArgumentException',
reason: '-[NSTaggedPointerString objectAtIndex:]: unrecognised selector
sent to instance 0xa00000000006c6e2'
*** First throw call stack:
(0x18334cf48 0x1987f7f80 0x183353c5c 0x183350c00 0x183254cac
0x1832f8c4c 0x183292f84 0x18923ecbc 0x194b8c6f0 0x188924e8c 0x188924bb0
0x1889247b0 0x188924560 0x1889244cc 0x188cf00c8 …
Run Code Online (Sandbox Code Playgroud) 我设置我的Rails 3.2.x应用程序以使用PostgreSQL HStore,但我收到一个错误.看起来环境没有拾取hstore扩展.我已经重新启动了我的机器,检查了数据库扩展等.
当我尝试执行时:
User.where("settings @> (:key => :value)", :key => "setting_x", :value => "test")
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我收到一个错误:( @>
无法识别,即hstore
没有安装扩展程序?)
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
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我的Rails应用程序设置是:
Gemfile.rb:
gem 'activerecord-postgres-hstore'
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移民:
add_column :users, :settings, :hstore
execute "CREATE INDEX CONCURRENTLY users_gin_settings ON users USING GIN(settings)"
# can see the extenstion installed on my local dev psql database after this
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User
模型:
serialize :settings, ActiveRecord::Coders::Hstore
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动态User
方法:
# metaprogramming: …
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