ruby - How to setup javascript files as :defaults in rails 4? -

my current ror application using rails 3.2.10 , want upgrade on rails 4.0.0.

i solve gem dependence when run rails server give error :-

undefined method `[]=' nil:nilclass config/application.rb:39:in `<class:application>'

my config/application.rb file has code @ line 39.

#javascript files want :defaults (application.js included). config.action_view.javascript_expansions[:defaults] = %w(jquery rails)

for should do- change code or remove, dependence or other option.

rails 4 support assets precompile comment line:-

#config.assets.enabled = true   in rails 4 assets pipline enable default

if switch on using asset pipeline should not use javascript_include_tag :defaults more in templates, , don't have set configuration option more.

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