我将项目更新为Rails 4.0，在更新了其他一些过时和冲突的gem之后（例如postgres_ext），我遇到了另一个问题。我单击链接来编辑用户并收到此错误：
ActionView::Template::Error (undefined method `[]' for nil:NilClass):
3: = hidden_field_tag :tab, 'personal'
4: %fieldset
5: .row-fluid
6: .span2= f.select :title, options_for_select(employee_title_options, employee.title), {:include_blank => true}, {:class => "span12", :autocomplete => 'off'}
7: .span4= f.text_field :first_name, :class => 'span12'
8: .span4= f.text_field :last_name, :class => 'span12'
9:
lib/bootstrap_form_builder.rb:6:in `label'
lib/bootstrap_form_builder.rb:19:in `select'
app/views/employees/tabs/_personal_edit.html.haml:6:in `block in _app_views_employees_tabs__personal_edit_html_haml__887033957300686763_70211507783580'
app/views/employees/tabs/_personal_edit.html.haml:1:in `_app_views_employees_tabs__personal_edit_html_haml__887033957300686763_70211507783580'
app/views/employees/edit.html.haml:46:in `_app_views_employees_edit_html_haml__2805730884185404262_70211428948540'
这是第6行的方法：
def #{selector}(name, options = {})
options[:autocomplete] ||= 'off'
@template.content_tag(:div,
label(name, options.delete(:label), :class => 'control-label') +
@template.content_tag(:div,
super(name, options_with_errors(name, options)),
:class => 'controls'),
:class => class_with_errors(name, 'control-group'))
end
和第19行方法：
def select(name, choices, options = {}, html_options = {})
html_options[:autocomplete] ||= 'off'
@template.content_tag(:div,
label(name, options.delete(:label)) +
@template.content_tag(:div,
super(name, choices, options, html_options),
:class => 'controls'),
:class => 'control-group')
end
end
使用“撬”时，我得到了：
[1] pry(#<BootstrapFormBuilder>)> options[:autocomplete] ||= 'off'
NoMethodError: undefined method `[]' for nil:NilClass
from (pry):1:in `label'
到目前为止，我对每个已更新的宝石都运行了“ bundle update“ gem””。我不确定应该更新哪些其他宝石。这是我的捆绑包：
$ bundle show
Gems included by the bundle:
* actionmailer (4.0.0)
* actionpack (4.0.0)
* activemodel (4.0.0)
* activerecord (4.0.0)
* activerecord-deprecated_finders (1.0.4)
* activesupport (4.0.0)
* addressable (2.3.6)
* annotate (2.6.3)
* arel (4.0.2)
* authlogic (3.4.1)
* autoparse (0.3.3)
* awesome_print (1.2.0)
* aws-eventstream (1.0.2)
* aws-partitions (1.149.0)
* aws-sdk (1.38.0)
* aws-sdk-core (3.48.3)
* aws-sdk-kms (1.16.0)
* aws-sdk-s3 (1.36.0)
* aws-sigv4 (1.1.0)
* bcrypt (3.1.7)
* bcrypt-ruby (3.1.5)
* builder (3.1.4)
* bundler (1.17.3)
* capybara (2.2.1)
* celluloid (0.15.2)
* celluloid-io (0.15.0)
* ckeditor (4.0.6 f0d175a)
* climate_control (0.0.3)
* cocaine (0.5.4)
* coderay (1.1.0)
* coffee-rails (4.2.2)
* coffee-script (2.4.1)
* coffee-script-source (1.12.2)
* concurrent-ruby (1.1.5)
* daemons (1.1.9)
* dalli (2.7.0)
* database_cleaner (1.2.0)
* delayed_job (4.0.1)
* delayed_job_active_record (4.0.1)
* diff-lcs (1.2.5)
* dotenv (0.7.0)
* erubis (2.7.0)
* eventmachine (1.0.3)
* exception_notification (4.0.1)
* execjs (2.7.0)
* extlib (0.9.16)
* factory_girl (4.4.0)
* factory_girl_rails (4.4.1)
* faraday (0.9.0)
* ffi (1.9.0)
* ffi-compiler (0.1.3)
* font_assets (0.1.11)
* foreigner (1.6.1)
* foreman (0.64.0)
* formatador (0.2.4)
* google-api-client (0.7.1)
* grocer (0.5.0)
* guard (2.6.0)
* guard-rspec (4.2.8)
* haml (4.0.5)
* haml-rails (0.4)
* heroku-rglpk (0.2.1 760859c)
* hike (1.2.3)
* i18n (0.9.5)
* jmespath (1.4.0)
* jquery-rails (3.1.0)
* jquery-ui-rails (4.2.1)
* json (1.8.6)
* jwt (0.1.11)
* launchy (2.4.2)
* listen (2.7.1)
* lumberjack (1.0.5)
* mail (2.5.5)
* memcachier (0.0.2)
* method_source (0.8.2)
* mime-types (1.25.1)
* mini_portile (0.5.3)
* minitest (4.7.5)
* multi_json (1.13.1)
* multipart-post (2.0.0)
* newrelic_rpm (3.7.3.204)
* nio4r (1.2.1)
* nokogiri (1.6.1)
* oauth (0.5.3)
* orm_adapter (0.5.0)
* paperclip (3.5.4)
* pg (0.17.1)
* pg_array_parser (0.0.9)
* polyglot (0.3.5)
* postgres_ext (3.0.1)
* protected_attributes (1.0.3)
* pry (0.9.12.6)
* quiet_assets (1.0.2)
* rack (1.5.5)
* rack-cors (0.2.9)
* rack-test (0.6.3)
* rails (4.0.0)
* rails_12factor (0.0.2)
* rails_serve_static_assets (0.0.2)
* rails_stdout_logging (0.0.3)
* railties (4.0.0)
* rake (12.3.2)
* rb-fsevent (0.9.4)
* rb-inotify (0.9.3)
* request_store (1.0.5)
* retriable (1.4.1)
* rspec (2.14.1)
* rspec-core (2.14.8)
* rspec-expectations (2.14.5)
* rspec-mocks (2.14.6)
* rspec-rails (2.14.2)
* rubyzip (1.1.7)
* sass (3.4.25)
* sass-rails (5.0.7)
* scrypt (1.2.1)
* shortener (0.3.0)
* signet (0.5.0)
* slop (3.5.0)
* spork (0.9.2)
* sprockets (2.12.5)
* sprockets-rails (2.0.1)
* strip_attributes (1.5.1)
* thin (1.6.2)
* thor (0.20.3)
* thread_safe (0.3.6)
* tilt (1.4.1)
* timers (1.1.0)
* treetop (1.4.15)
* trim_blobs (0.0.1)
* twilio-ruby (3.11.5)
* tzinfo (0.3.55)
* uglifier (2.5.0)
* uuidtools (2.1.4)
* xeroizer (2.16.5)
* xpath (2.0.0)
* yui-compressor (0.12.0)
任何有关罪魁祸首的帮助将不胜感激。
到目前为止，这是我尝试使用的方法，我将binding.pry放在第19行上方，即'html_options [：autocomplete] || ='off'：
[1] pry(#<BootstrapFormBuilder>)> @template.content_tag(:div, label(name, options.delete(:label)) + @template.content_tag(:div, super(name, choices, options, html_options), :class => 'controls'), :class => 'control-group')
NoMethodError: undefined method `[]' for nil:NilClass
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `label'
[2] pry(#<BootstrapFormBuilder>)>
[3] pry(#<BootstrapFormBuilder>)>
[4] pry(#<BootstrapFormBuilder>)> html_options[:autocomplete]
=> "off"
[5] pry(#<BootstrapFormBuilder>)> html_options[:autocomplete] ||= 'off'
=> "off"
[6] pry(#<BootstrapFormBuilder>)> @template.content_tag(:div, label(name, options.delete(:label)) + @template.content_tag(:div, super(name, choices, options, html_options), :class => 'controls'), :class => 'control-group')
NoMethodError: undefined method `[]' for nil:NilClass
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `label'
[7] pry(#<BootstrapFormBuilder>)> options[:autocomplete] ||= 'off'
=> "off"
[8] pry(#<BootstrapFormBuilder>)> label(name, options.delete(:label))
NoMethodError: undefined method `[]' for nil:NilClass
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `label'
[9] pry(#<BootstrapFormBuilder>)> super(name, choices, options, html_options)
=> "<select autocomplete=\"off\" class=\"span12\" id=\"employee_title\" name=\"employee[title]\"><option value=\"\"></option>\n<option value=\"Mr\">Mr</option>\n<option value=\"Mrs\">Mrs</option>\n<option selected=\"selected\" value=\"Ms\">Ms</option>\n<option value=\"Miss\">Miss</option></select>"
[10] pry(#<BootstrapFormBuilder>)> options
=> {:include_blank=>true, :autocomplete=>"off"}
[11] pry(#<BootstrapFormBuilder>)> label(name, options.delete(:label))
NoMethodError: undefined method `[]' for nil:NilClass
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `label'
[12] pry(#<BootstrapFormBuilder>)> label
ArgumentError: wrong number of arguments (0 for 1..2)
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:4:in `label'
[13] pry(#<BootstrapFormBuilder>)> label(1)
ArgumentError: wrong number of arguments (3 for 1..2)
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:4:in `label'
[14] pry(#<BootstrapFormBuilder>)> label(1,1,1)
ArgumentError: wrong number of arguments (3 for 1..2)
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:4:in `label'
[15] pry(#<BootstrapFormBuilder>)> label(1,1)
TypeError: no implicit conversion of Symbol into Integer
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `[]'
[16] pry(#<BootstrapFormBuilder>)> label(:class, :class)
TypeError: no implicit conversion of Symbol into Integer
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `[]'
[17] pry(#<BootstrapFormBuilder>)> label(name, class)
SyntaxError: unexpected ')'
[17] pry(#<BootstrapFormBuilder>)> label(name, name)
TypeError: no implicit conversion of Symbol into Integer
from /Users/justinhung/projects/testDir/silk-hospitality/lib/bootstrap_form_builder.rb:5:in `[]'
[18] pry(#<BootstrapFormBuilder>)>
ActionView::Template::Error (wrong number of arguments (3 for 1..2)):
3: = hidden_field_tag :tab, 'personal'
4: %fieldset
5: .row-fluid
6: .span2= f.select :title, options_for_select(employee_title_options, employee.title), {:include_blank => true}, {:class => "span12", :autocomplete => 'off'}
7: .span4= f.text_field :first_name, :class => 'span12'
8: .span4= f.text_field :last_name, :class => 'span12'
9:
lib/bootstrap_form_builder.rb:13:in `label'
lib/bootstrap_form_builder.rb:18:in `label'
lib/bootstrap_form_builder.rb:44:in `select'
app/views/employees/tabs/_personal_edit.html.haml:6:in `block in _app_views_employees_tabs__personal_edit_html_haml___2427532747449540069_70152554531760'
app/views/employees/tabs/_personal_edit.html.haml:1:in `_app_views_employees_tabs__personal_edit_html_haml___2427532747449540069_70152554531760'
app/views/employees/edit.html.haml:46:in `_app_views_employees_edit_html_haml__3872729914300479182_70152556676880'
“标签”在这里：
def #{selector}(name, options = {})
options[:autocomplete] ||= 'off'
@template.content_tag(:div,
label(name, options.fetch(:label, {}), :class => 'control-label') +
@template.content_tag(:div,
super(name, options_with_errors(name, options)),
:class => 'controls'),
:class => class_with_errors(name, 'control-group'))
end
答案 0 :(得分：1)
似乎label(name, options.delete(:label))的委派是nil。
您在haml中的选择是{:include_blank => true}。哈希中没有label键。
您应该使用options.fetch(:label, {})。
将您的方法更改为：
def select(name, choices, options = {}, html_options = {})
html_options[:autocomplete] ||= 'off'
@template.content_tag(
:div,
label(
name,
options.fetch(:label, {})
) +
@template.content_tag(
:div,
super(name, choices, options, html_options),
:class => 'controls'
),
:class => 'control-group'
)
end
和：
def #{selector}(name, options = {})
options[:autocomplete] ||= 'off'
@template.content_tag(
:div,
label(name, options.fetch(:label, {}), :class => 'control-label') +
@template.content_tag(
:div,
super(name, options_with_errors(name, options)),
:class => 'controls'
),
:class => class_with_errors(name, 'control-group')
)
end
通知：options.fetch(:label, {})