CODEWITHSUNDEEP
ruby-on-rails-4.2ruby-2.1
roarfromror
roarfromror

Reputation: 376

Can't understand reason for syntax error in rails 4.2

I have below piece of code: 

params.require(:posting_status).permit(:email, :craig_password,  :mail_password, :posting_id, post_to:[])

this line doesn't give syntax error, but when i do like: 

params.require(:posting_status).permit(:email, :craig_password, :mail_password,  post_to:[], :posting_id)

this gives syntax error, Can't find the reason.

Upvotes: 0

Views: 50

Answers (1)

Ruslan Kornienko
Ruslan Kornienko

Reputation: 261

In the first case you used symbol at the beginning and (implicit!) hash at the end.

In the second case implicit hash not at the end. Explicit hash solves the problem.

params.require(:posting_status).permit(:email, :craig_password, :mail_password, {post_to:[]}, :posting_id)

P.S. Source code of 'permit' method:

File actionpack/lib/action_controller/metal/strong_parameters.rb, line 325

def permit(*filters)
  params = self.class.new

  filters.flatten.each do |filter|
    case filter
    when Symbol, String
      permitted_scalar_filter(params, filter)
    when Hash then
      hash_filter(params, filter)
    end
  end

  unpermitted_parameters!(params) if self.class.action_on_unpermitted_parameters

  params.permit!
end

Upvotes: 1

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