CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4
emersonthis
emersonthis

Reputation: 33348

Rails 4 strong parameters syntax error

I'm getting this error:

/Applications/MAMP/htdocs/clippo2/app/controllers/projects_controller.rb:31: syntax error, unexpected ',', expecting => ...:user_id => [1], :instructions, :max_duration, :active, :max... ... ^

From this method while trying to implement the Rails 4 strong parameters:

  private
    def project_params
      params.require(:project).permit(:user_id => [1], :instructions, :max_duration, :active, :max_videos, :hashed_id)
    end

What am I doing wrong?

Upvotes: 2

Views: 1213

Answers (1)

MrYoshiji
MrYoshiji

Reputation: 54882

Try to remove the "=> [1]" after the :user_id symbol:

params.require(:project).permit(:user_id => [1], :instructions, :etc)                                              ^^^^^^^
params.require(:project).permit(:user_id, :instructions, :etc)

Or if you want to keep it, use { }:

params.require(:project).permit({:user_id => [1]}, :instructions, :etc)

Or use ruby syntax parser to your advantage (see more info below):

params.require(:project).permit(:instructions, :etc, :user_id => [1])

This is actually a ruby feature. The latest arg given to a method is implicitly a Hash, therefore you don't need the curly braces { and } on the latest arg object.

For example, calling a method like this:

permit(1,2,3, :some => :var, :of => :a, :ruby => :hash)

Is the exact same thing as doing:

permit(1,2,3, { :some => :var, :of => :a, :ruby => :hash })

But passing the args in a different order would break the parser if the hash is first without the curly braces { and }.

Upvotes: 4

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