Problem shoveling a new section into form_data

[eliduke]

This one is a bit of a doozy. I'm not sure if this is a problem on my end or simply a limitation of XLForm, but hopefully you can shed some light on this for me. I'll try to break it down as best I can.

I have a collection of settings with the following json structure:

"key": "hide_connections_on_profile",
"name": "Users – Hide User’s Connections list",
"description": "Profile",
"setting": true,
"category": "Privacy",
"label": "Hide my Connections list from my profile"

I go through the list and grab all the uniq categories, then map through those as the the different sections of the form. That is all working flawlessly right now.

def settings
  @categories = @settings.map{ |setting| setting.category}.uniq.sort
  @categories.map do |category|
    @category_of_settings = @settings.select{ |user| user.category == category }
    {
      title: category.upcase,
      cells:
      @category_of_settings.map do |setting|
        {
          name: setting.key,
          title: setting.label,
          type: :check,
          value: setting.setting
        }
      end
    }
  end
end

The problem is that I don't have a save button. Since I am dealing exclusively with loops here, I need to inject the save button at the end. And that's where things are not going well. First, I tried switching the first block to an each, wrapping the whole thing in [ ], with the possibility of conditionally adding a save button.

def settings
  @categories = @settings.map{ |setting| setting.category}.uniq.sort
  [
  @categories.each do |category|
    @category_of_settings = @settings.select{ |user| user.category == category }
    {
      title: category.upcase,
      cells:
      @category_of_settings.map do |setting|
        {
          name: setting.key,
          title: setting.label,
          type: :check,
          value: setting.setting
        }
      end
    }
  end
  ]
end

It compiles just fine, but when I load that screen, I get the following error:

xl_form_patch.rb:76:in `section:': can't convert Symbol into Integer (TypeError)

I tried going back to map and then creating 2 separate methods, settings and save_button and then shoveling them together in a form_data method:

def form_data
  settings << save_button
end  

def settings
  @categories = @settings.map{ |setting| setting.category}.uniq.sort
  @categories.map do |category|
    @category_of_settings = @settings.select{ |user| user.category == category }
    {
      title: category.upcase,
      cells:
      @category_of_settings.map do |setting|
        {
          name: setting.key,
          title: setting.label,
          type: :check,
          value: setting.setting
        }
      end
    }
  end
end

def save_button
  [{
    title: nil,
    cells: [{
      name: :save,
      title: "Save",
      type: :button,
      on_click: -> { save_settings }
    }]
  }]
end

Again, it compiles just fine, but then I get the same error:

xl_form_patch.rb:76:in `section:': can't convert Symbol into Integer (TypeError)

And at this point, I'm at a loss. Not sure if what I'm after is just not possible or if I'm missing some subtly in there somewhere.