I've got this line of code:
if request.user_agent.include?("iPhone") then
But I'm occasionally getting this error:
"undefined method `include?' for nil:NilClass"
When checking logs on the error, there isn't a "HTTP_USER_AGENT" for the user that is getting the error.
So how can I fix that line so it doesn't throw an error if there isn't an HTTP_USER_AGENT?
For Rails 2.3.xx you can also use Object#try
request.user_agent.try(:include?, 'iphone')
Check here for more info.
Check it for nil or rescue the exception yourself.
NSD is right.
You could also use try as a short cut:
request.user_agent.try(:include?, "iPhone")
try will not error when its receiver is nil, so you can chain them together, like this:
foo.try(:bar).try(:baz)
Related
I am really confused about this Psych BadAlias error.
I have tried everything but not able to debug this error.
When i am executing my test case i am getting this error
Failure/Error: #st.fetch(o.anchor) { raise BadAlias, "Unknown alias: #{o.anchor}" }
Psych::BadAlias:
Unknown alias: 2
But before it was working perfectly fine.
This is my fixtures file
workers.yml
Worker_1:
name: Hello
preferred_first_name: First
preferred_last_name: Last
assignment: Assignemnt_1
talent: Ruby_development
Any kind of Help is appreciated!
Thanks
A Psych::BadAlias exception will be raised if the yaml contains aliases but the aliases keyword argument is set to false.
Please check your yaml files. The error got raised from here. For more details please refer here
I solved it, as there was just a syntax error in yaaml file.
we canot use "p-r-a-t-i-k" we have to use "p_r_a_t_i_k"
Trying to follow the setup here to create a simple SAML application (full project I got here).
I went through and did the setup
bundle install
rails s
This went fine, but when I navigate to
http://localhost:3000/
I get hit with
NoMethodError in SamlController#init
undefined method `+' for nil:NilClass
Extracted source (around line #9):
def init
request = OneLogin::RubySaml::Authrequest.new
direct_to(request.create(saml_settings))
end
def consume
I added some logging to check nil status of request and saml_settings but that seems to return false for both of them
puts request.nil?
puts saml_settings.nil?
Error trace:
Processing by SamlController#init as HTML
false
false
Created AuthnRequest: <samlp:AuthnRequest AssertionConsumerServiceURL='http://localhost:3000/saml/consume' ID='_394fa0a0-f313-0135-85a4-6a0001e18280' IssueInstant='2018-02-13T17:42:45Z' Version='2.0' xmlns:saml='urn:oasis:names:tc:SAML:2.0:assertion' xmlns:samlp='urn:oasis:names:tc:SAML:2.0:protocol'><saml:Issuer>http://localhost:3000/saml/consume</saml:Issuer></samlp:AuthnRequest>
Completed 500 Internal Server Error in 15ms (ActiveRecord: 0.0ms)
NoMethodError (undefined method `+' for nil:NilClass):
app/controllers/saml_controller.rb:9:in `init'
(Note: the error is line 5, it says line 9 for me because of debug logging I added)
I'm not too sure what else it could be, not sure what method it can't find and what is nil?
I have never messed with ruby stuff, but from my initial looks I'm not sure where the nil is coming from, the logs show the request being created so not sure. Any help would be appreciated, thanks!
Firstly I think you're using a pretty old ruby-saml gem version. That might be the problem.
I haven't tested your code, but it seems to me that you forgot to set idp_sso_target_url in your settings, and apparently that's the only place it can throw the exception you got. https://github.com/onelogin/ruby-saml/blob/v1.1.2/lib/onelogin/ruby-saml/authrequest.rb#L39
Posting the answer here, turns out that i was using a metadata url for the OKTA_METADATA environment variable.
Had to modify
settings = idp_metadata_parser.parse(ENV['OKTA_METADATA'])
to
settings = idp_metadata_parser.parse_remote(ENV['OKTA_METADATA'])
where
OKTA_METADATA=http://blahblahblah.com/metadata
I am integrating Block chain with my Rails App , so I am using Ethereum gem
to host the data to the blockchain.
I am getting the below error when i am trying to implement Ethereum to my Rails App.
I am using the following gem enter link description here
While i am trying the following command
init = Ethereum::Initializer.new("#{ENV['PWD']}/SimpleNameRegistry.sol", client)
I am getting the below error
NoMethodError: undefined method `keys' for nil:NilClass
when I try to debug inside the gem I received the following error code in the below line.
Error Line:
sol_output = #client.compile_solidity(#file)
Error Code:
{"jsonrpc"=>"2.0", "error"=>{"code"=>-32600, "message"=>"EOF"}}
Please help me to get out of this error as I am stuck with this.
Please also suggest me with an easy implementation of block chain with rails.
The command line is returning an error with the method name as soon as enter is pressed after typing 'end'
Error
This is not an error, but simply the name of the method which was defined.
Just continue :)
This is no error, you can call now:
MyAdd(5, 5)
and it will work, this shows only that it was defined.
I try to use angular-ui-bootstrap datepicker and it upset me for a while with an error on firebug console (Firefox 21) saying
Error: array is undefined
indexOf#http://localhost:9000/components/angular/angular.js:526
arrayRemove#http://localhost:9000/components/angular/angular.js:535
JQLiteUnbind#http://localhost:9000/components/angular/angular.js:1630
JQLite.prototype[name]#http://localhost:9000/components/angular/angular.js:2203
.link/<#http://localhost:9000/components/angular-ui-bootstrap-bower/ui-bootstrap-tpls.min.js:1
Scope.prototype.$digest#http://localhost:9000/components/angular/angular.js:7942
Scope.prototype.$apply#http://localhost:9000/components/angular/angular.js:8143
done#http://localhost:9000/components/angular/angular.js:9170
completeRequest#http://localhost:9000/components/angular/angular.js:9333
createHttpBackend/</xhr.onreadystatechange#http://localhost:9000/components/angular/angular.js:9304
http://localhost:9000/components/angular/angular.js
Line 5754
After I check every datepicker settings I check the given example in documentation, followed the link "edit it on plunker" and I got a similar error.
Error: array is undefined
indexOf#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:510
arrayRemove#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:519
JQLiteUnbind#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:1596
JQLite.prototype[name]#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:2149
.link/<#http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.5.0.js:1229
Scope.prototype.$digest#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:7878
Scope.prototype.$apply#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:8079
bootstrap/<#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:962
invoke#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:2843
bootstrap#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:961
angularInit#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:936
#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:14729
trigger#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:1723
createEventHandler/eventHandler/<#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:1958
forEach#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:133
createEventHandler/eventHandler#http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:1957
http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js
Line 5687
Then I try Chrome Version 26.0.1410.63 and I got a different error
TypeError: Cannot read property 'indexOf' of undefined
at indexOf (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:510:12)
at arrayRemove (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:519:15)
at JQLiteUnbind (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:1596:7)
at Object.JQLite.(anonymous function) [as unbind] (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:2149:17)
at Object.fn (http://angular-ui.github.io/bootstrap/ui-bootstrap-tpls-0.5.0.js:1229:21)
at Object.Scope.$digest (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:7878:27)
at Object.Scope.$apply (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:8079:24)
at http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:962:13
at Object.invoke (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:2843:25)
at bootstrap (http://ajax.googleapis.com/ajax/libs/angularjs/1.0.5/angular.js:960:12)
It works but the error message upset me a lot and I thought that was something wrong with my code.
Can I assume this is not related with example given but with some internals or is the example missing something?
ui-bootstrap 0.5.0 has a bug,
(it tries to unbind 'focus' event handler, but handler doesn't exist)
https://github.com/angular-ui/bootstrap/blob/gh-pages/ui-bootstrap-tpls-0.5.0.js#L1226
you can apply this changes
https://github.com/angular-ui/bootstrap/commit/bf30898da27272df75f6c7ff26545ed16ebf1978
or build it directly from github
or wait for 0.6.0