Multiple saves with one submit - ruby-on-rails

Question

I need a form that includes 1 radio button, 1 submit button and a checkbox for each listed item.
Upon submit, the form should save a separate record for each checked item. Each saved item should include the value of the radio button along with other hidden values.
The form renders but crashes upon submit. The error message is:
undefined method `permit' for #<Array:0x007fb4b3b1a520>
My code is:
<%= form_tag(controller: "handoffs", action: "create", method: "post") %>
<%= radio_button_tag(:attend, "arrive") %>
<%= label(:handoff_arrive, "drop-off") %>
<%= radio_button_tag(:attend, "depart") %>
<%= label(:handoff_depart, "pick-up") %>
<% #parent.children.each do |child| %>
<%= check_box_tag "handoff[][check]" %>
<strong>
<%= child.fname %>
<%= child.mname %>
<%= child.lname %>
</strong><br>
<% group = Group.find(child.group_id) %>
<%= hidden_field_tag "handoff[][attend]" %>
<%= hidden_field_tag "handoff[][group_name]", :value => group.name %>
<%= hidden_field_tag "handoff[][child_id]", :value => child.id %>
<%= hidden_field_tag "handoff[][center_id]", :value => #center.id %>
<%= hidden_field_tag "handoff[][escort_fname]", :value => #parent.fname %>
<%= hidden_field_tag "handoff[][escort_lname]", :value => #parent.lname %>
<%= hidden_field_tag "handoff[][child_fname]", :value => child.fname %>
<%= hidden_field_tag "handoff[][child_mname]", :value => child.mname %>
<%= hidden_field_tag "handoff[][child_lname]", :value => child.lname %>
<% end %>
<%= button_to :submit, :class => 'f_submit' %>
<% end %>
Controller actions:
def new
#handoff = Handoff.new
#parent = current_parent
#center = Center.find(#parent.center_id)
end
def create
params["handoff"].each do |handoff|
if params[:handoff["check"]] != ""
#handoff = Handoff.new(handoff_params)
#handoff.save
end
end
end
def handoff_params
params.require(:handoff).permit(:attend, :group_name, :child_id, :center_id, :escort_fname, :escort_lname, :child_fname, :child_mname, :child_lname)
end
Request parameters (in error report)
{"utf8"=>"✓",
"authenticity_token"=>"snqrS130bXNV4bmMHOMlXeyhX2rWFVpmY/PYIv0jn97MBOLSWWw2jBbeYGPyjt7O9l5pRVNuFiu1qOwkGpELTA==",
"attend"=>"depart", "handoff"=>[{"check"=>"1", "attend"=>"",
"group_name"=>"{:value=>\"Gifted\"}", "child_id"=>"{:value=>60}",
"center_id"=>"{:value=>4}", "escort_fname"=>"{:value=>\"Richard\"}",
"escort_lname"=>"{:value=>\"Messing\"}",
"child_fname"=>"{:value=>\"Aaron\"}",
"child_mname"=>"{:value=>\"Lawrence\"}",
"child_lname"=>"{:value=>\"Schwartz\"}"}, {"check"=>"1", "attend"=>"",
"group_name"=>"{:value=>\"Arts & Crafts\"}",
"child_id"=>"{:value=>61}", "center_id"=>"{:value=>4}",
"escort_fname"=>"{:value=>\"Richard\"}",
"escort_lname"=>"{:value=>\"Messing\"}",
"child_fname"=>"{:value=>\"Joseph\"}",
"child_mname"=>"{:value=>\"Michael\"}",
"child_lname"=>"{:value=>\"Messing\"}"}], "method"=>"post",
"controller"=>"handoffs", "action"=>"create"}

Answer 1

I had similar case. First you need to create array with all values that you would like to export I used helper to do that. I'll show you my example:
def get_table_of_keywords(keywords)
exact_keywords = []
keyword_array.each do |key|
if !key.blank?
exact_keywords << {keyword: key, created_at: DateTime.now.in_time_zone, updated_at: DateTime.now.in_time_zone }
end
end
exact_keywords
end
And the you are using create:
#inserted_keywords = #campaign.keywords.create(get_table_of_keywords(params[:keyword][:keyword])) # add new keywords to the list