Trying to do a bundle fails with "There was a SyntaxError while loading arel.gemspec"

Question

This is the error I get when I do a bundle in the rails repo in the master branch.

There was a SyntaxError while loading arel.gemspec: 
/home/apnabhzu/ruby/gems/bundler/gems/arel-3c429c5d86e9/lib/arel/table.rb:14: syntax
error, unexpected tLABEL
    def initialize(name, as: nil, type_caster: nil)
                            ^
/home/apnabhzu/ruby/gems/bundler/gems/arel-3c429c5d86e9/lib/arel/table.rb:14: Can't
assign to nil
    def initialize(name, as: nil, type_caster: nil)
                                 ^
/home/apnabhzu/ruby/gems/bundler/gems/arel-3c429c5d86e9/lib/arel/table.rb:125: syntax
error, unexpected keyword_end, expecting $end from
  /home/apnabhzu/ruby/gems/bundler/gems/arel-3c429c5d86e9/arel.gemspec:3:in `<main>'

I have listed the environment details below :

Ruby Version - 1.9.3p429
Rails Version - 5.0.0.alpha
Bundler version 1.10.6

I have no idea why I am getting this, what could be a possible fix?

it may be that named params only appear in ruby 2. This version of arel will not work with ruby 1.9 — charlysisto, Nov 17 '15 at 11:33

score 0 · Answer 1 · answered Nov 17 '15 at 11:08

Why you are trying to assign nil value to parameter?

The default parameter is used when the parameter isn't provided.

If you provide it as nil, then it will be nil.

If you want to set a default value, even if nil is passed, and still allow calling the method without an argument you need to set the default value to nil and use the "or equals" operator:

def initialize(name,as=nil)
 as ||= "Your value"
 puts as
end

Trying to do a bundle fails with "There was a SyntaxError while loading arel.gemspec"

1 Answers1