Paul A Jungwirth

Paul A Jungwirth has asked 25 questions and find answers to 70 problems.

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Freelance web developer specializing in Rails, Postgres, and DevOps.

Paul A Jungwirth questions

Rspec: Show a model's errors when it's not valid
Perl: Check to see if your file was loaded as a module or run directly
Paperclip: Assign an image programmatically and set its name
ActiveRecord converts symbol keys to strings when serializing my hash
Add a Reference from a C# App to a DLL compiled without /clr?
What is vim's @@ variable?
"cannot move out of borrowed content" with operator overloading
Detect in Rails after_filter whether we're rendering or redirecting
C# Lambdas: How *Not* to Defer "Dereference"?
Is there a way to match two enum variants and also bind the matched variant to a variable?

Paul A Jungwirth answers

In Rails Routes redirect controller action to root?
rails validations allow_blank and presence
Rails 5 with DelayedJob resulting in an error
Style placeholder differently from value with best_in_place
Rails: Self referential parent/child hierarchy without through table
Rails 2: Model.find(1) gives ActiveRecord error when id 1 does not exist
pg_config shows 9.4 instead of 9.3
Paperclip + Rails with load balanced machines
Vector (array) addition in Postgres
Mysql won't start anymore [closed]