grape-reload
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AMar4enko
Error: undefined method `last' for nil:NilClass (NoMethodError)
I'm running my app (not on Rails, just config.ru) and getting this:
/gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:352:in `initialize': undefined method `last' for nil:NilClass (NoMethodError)
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:131:in `new'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:131:in `node_for'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:171:in `block in initialize'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:171:in `map'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:171:in `initialize'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:131:in `new'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:131:in `node_for'
from /gems/grape-reload-0.0.4/lib/ripper/extract_constants.rb:393:in `extract_constants'
from /gems/grape-reload-0.0.4/lib/grape/reload/dependency_map.rb:27:in `block in initialize'
from /gems/grape-reload-0.0.4/lib/grape/reload/dependency_map.rb:27:in `map'
from /gems/grape-reload-0.0.4/lib/grape/reload/dependency_map.rb:27:in `initialize'
from /gems/grape-reload-0.0.4/lib/grape/reload/dependency_map.rb:129:in `new'
from /gems/grape-reload-0.0.4/lib/grape/reload/dependency_map.rb:129:in `initialize'
from /gems/grape-reload-0.0.4/lib/grape/reload/rack_builder.rb:73:in `new'
from /gems/grape-reload-0.0.4/lib/grape/reload/rack_builder.rb:73:in `boot!'
Refers to @module_name = args.find{|a| a.first == :const_ref}.last[1]
The args is:
{
:args => [
[0] [
[0] :const_path_ref,
[1] [
[0] :const_path_ref,
[1] [
[0] :var_ref,
[1] [
[0] :@const,
[1] "CarrierWave",
[2] [
[0] 54,
[1] 7
]
]
],
[2] [
[0] :@const,
[1] "Sequel",
[2] [
[0] 54,
[1] 20
]
]
],
[2] [
[0] :@const,
[1] "Validations",
[2] [
[0] 54,
[1] 28
]
]
],
[1] [
[0] :bodystmt,
[1] [
[0] [
[0] :void_stmt
],
[1] [
[0] :def,
[1] [
[0] :@ident,
[1] "validate",
[2] [
[0] 55,
[1] 6
]
],
[2] [
[0] :params,
[1] nil,
[2] nil,
[3] nil,
[4] nil,
[5] nil,
[6] nil,
[7] nil
],
[3] [
[0] :bodystmt,
[1] [
[0] [
[0] :zsuper
],
[1] [
[0] :method_add_block,
[1] [
[0] :call,
[1] [
[0] :call,
[1] [
[0] :call,
[1] [
[0] :var_ref,
[1] [
[0] :@kw,
[1] "self",
[2] [
[0] 57,
[1] 4
]
]
],
[2] :".",
[3] [
[0] :@ident,
[1] "class",
[2] [
[0] 57,
[1] 9
]
]
],
[2] :".",
[3] [
[0] :@ident,
[1] "uploaders",
[2] [
[0] 57,
[1] 15
]
]
],
[2] :".",
[3] [
[0] :@ident,
[1] "each_key",
[2] [
[0] 57,
[1] 25
]
]
],
[2] [
[0] :do_block,
[1] [
[0] :block_var,
[1] [
[0] :params,
[1] [
[0] [
[0] :@ident,
[1] "column",
[2] [
[0] 57,
[1] 38
]
]
],
[2] nil,
[3] nil,
[4] nil,
[5] nil,
[6] nil,
[7] nil
],
[2] false
],
[2] [
[0] [
[0] :if_mod,
[1] [
[0] :method_add_arg,
[1] [
[0] :fcall,
[1] [
[0] :@ident,
[1] "send",
[2] [
[0] 58,
[1] 39
]
]
],
[2] [
[0] :arg_paren,
[1] [
[0] :args_add_block,
[1] [
[0] [
[0] :string_literal,
[1] [
[0] :string_content,
[1] [
[0] :string_embexpr,
[1] [
[0] [
[0] :var_ref,
[1] [
[0] :@ident,
[1] "column",
[2] [
[0] 58,
[1] 47
]
]
]
]
],
[2] [
[0] :@tstring_content,
[1] "_integrity_error",
[2] [
[0] 58,
[1] 54
]
]
]
]
],
[2] false
]
]
],
[2] [
[0] :method_add_arg,
[1] [
[0] :call,
[1] [
[0] :vcall,
[1] [
[0] :@ident,
[1] "errors",
[2] [
[0] 58,
[1] 6
]
]
],
[2] :".",
[3] [
[0] :@ident,
[1] "add",
[2] [
[0] 58,
[1] 13
]
]
],
[2] [
[0] :arg_paren,
[1] [
[0] :args_add_block,
[1] [
[0] [
[0] :var_ref,
[1] [
[0] :@ident,
[1] "column",
[2] [
[0] 58,
[1] 17
]
]
],
[1] [
[0] :string_literal,
[1] [
[0] :string_content,
[1] [
[0] :@tstring_content,
[1] "invalid",
[2] [
[0] 58,
[1] 26
]
]
]
]
],
[2] false
]
]
]
]
]
]
]
],
[2] nil,
[3] nil,
[4] nil
]
]
],
[2] nil,
[3] nil,
[4] nil
]
]
}
It refers to source of gem carrierwave-sequel.
Wow, looks weird. Can you show you config.ru and Gemfile? It's should't even try to parse gems sources.
My bad, it was referring my code, which is
module CarrierWave::Sequel::Validations
def validate
super
self.class.uploaders.each_key do |column|
errors.add(column, 'invalid') if send("#{column}_integrity_error")
end
end
end
Once removed it failed on something else, similar: an already-defiend module with an instance method.
My config.ru is something like:
require_relative './server'
require 'grape/reload'
Grape::RackBuilder.setup do
logger Logger.new(STDOUT)
add_source_path File.expand_path('**/*.rb', __dir__)
reload_threshold 1
force_reloading true
mount 'MyApp::API', to: '/'
end
run Grape::RackBuilder.boot!.application
Can you add test reproducing error? BTW, in readme i describe such potential issue:
# Bad
class AlreadyDefined
# Here is your code to patch class
end
# Good
AlreadyDefined.class_eval do
# Here is your code to patch class
end