Rails 5 - accepts_nested_attributes_for when building multiple objects - ruby-on-rails-5

Question

EDIT 2:
More progress. I can now save the data properly. Now to see if I can update it.
EDIT 1:
I've made some progress and can render the fields in the view with the following code, though I am having trouble saving the data. It also doesn't feel like "the rails way" as they say. Is there a better approach to doing this?
Original Question:
In my application, I have a Daily model which holds a store ID and
timestamps. Each day, for each Store, a form is to be created to
display a field for each service in the Service model. This data
will be saved to a DailyDatum model. One record for each service
which references the daily_id.
So my question is, in the form for creating a new form for the daily
object, how do I render a field for each service in the Service
model?
The Idea:
The user can create a Service.
Each Store has one Daily record for any given date.
Each Daily has many DailyDatum.
Each DailyDatum holds a record of each Service in the services table for that day along with a value.
Updated code:
Daily Controller:
def new
#daily = Daily.new
#services = []
Service.all.each do |s|
service = #daily.daily_data.build
service.service_id = s.id
#services << service
end
end
def create
#daily = Daily.new(daily_params)
if #daily.save
params["services"].each do |service|
data = DailyDatum.new(service_params(service))
data.daily_id = #daily.id
data.save
end
redirect_to dailies_url
else
render 'new'
end
end
private
def service_params(my_params)
my_params.permit(:daily_id, :service_id, :value)
end
Model - DailyDatum.rb
class DailyDatum < ApplicationRecord
belongs_to :daily
belongs_to :service
end
Model - Daily.rb
class Daily < ApplicationRecord
has_many :daily_data
belongs_to :store
accepts_nested_attributes_for :daily_data
end
Model - Service.rb
class Service < ApplicationRecord
belongs_to :service_group, optional: true
has_many :daily_data
end
Model - Store.rb
class Store < ApplicationRecord
has_many :store_users, inverse_of: :store
has_many :users, through: :store_user
has_many :dailies
accepts_nested_attributes_for :store_users, allow_destroy: true
end
View:
<% #services.each do |service| %>
<tr>
<%= fields_for 'services[]', service do |s| %>
<%= s.hidden_field :service_id, value: service.service_id %>
<td><%= s.label :value, service_name(service.service_id) %></td>
<td><%= s.text_field :value %></td>
<% end %>
</tr>
<% end %>