Serialize array with strong_parameters

Question

I am trying to save a array using the strong_parameters gem. But I am having issues with how the form is sending my array. The params look like this:

> params[:circuit] 
=> {"title"=>"Some title", ..., "viewable_tasks"=>{"0"=>"woop", "1"=>"dee", ...}}

And my circuit_params function looks like:

def circuit_params
  params.require(:circuit).permit(:title, :id, viewable_tasks: { }, ... )
end

I can't seem to get the syntax to allow my params to work. What I get in my console is:

> circuit_params
=> {"title"=>"implement plug-and-play mindshare",
 "viewable_tasks"=>{"0"=>nil, "1"=>nil, "2"=>nil}, ...

In my model I have:

class Circuit < ActiveRecord::Base
   serialize :viewable_tasks, Array
   ...
end

I noticed that I can get it to work properly with attributes I call accepts_nested_attributes_for on, so this may have something to do with it.

Thanks for any help

Tom Rossi · Accepted Answer · 2013-09-04 02:29:38Z

16

I just had the same issue and this was the correct syntax:

def circuit_params
  params.require(:circuit).permit(:title, :id, {:viewable_tasks => []}, ... )
end

answered Sep 4, 2013 at 2:29

Tom Rossi

12.2k8 gold badges74 silver badges101 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Hamdan · Accepted Answer · 2014-03-02 22:23:15Z

0

the serialized items must be in the end of the permit parameters. In my experience (and i dont know exactly why), you cannot input another unserialized item after a serialized one... try and let us know.

answered Mar 2, 2014 at 22:23

Hamdan

19315 bronze badges

2 Comments

Brian Morearty Over a year ago

It's because of Ruby syntax. It's not a Rails restriction. Ruby allows a hash to be at the end of a parameter list without enclosing it in {braces}. If a hash is not at the end, it must be in braces.

Brian Morearty Over a year ago

I'm not sure why, @Hamdan. The ability to leave the braces off a hash at the end is probably for convenience and readability and to encourage a convention of a hash being the last param. In the Rails permit method, BTW, you totally can put a hash in the beginning or middle of the list if you use the braces.

jmabry · Accepted Answer · 2013-04-17 16:49:44Z

-1

Try using this:

def circuit_params
  params.require(:circuit).permit(:title, :id, viewable_tasks:[], ... )
end

answered Apr 17, 2013 at 16:49

jmabry

335 bronze badges

1 Comment

Hamdan Over a year ago

As I said, the hashes need to necessarily be at the end of the permit parameters

Collectives™ on Stack Overflow

Serialize array with strong_parameters

3 Answers 3

Comments

2 Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related