Render a partial that uses helper methods to determine view - ruby-on-rails

Question

What Currently Works:
In my BookingsController#Index method, I have this
def index
#user = current_user
if #user.user_type == 'host'
#bookings = Booking.where(host_id:#user.id, status: "#{params[:status]}")
else #user.user_type == 'cleaner'
#bookings = Booking.where(cleaner_id:#user.id, status: "#{params[:status]}")
end
end
This sets the current user and determines which #bookings to display depending on the user_id and params.
In the views, in my index.html.erb file, I render bookings <%= render #bookings %> which i defined in the booking#index. I have a _booking.html.erb partial that gets rendered... Inside the _booking.html.erb partial, I am able to successfully return booking details , like this for instance,
<div id='booking-time'><b>Unit Name:</b> <%= booking.unit.name %></div>
will return the unit name. it recognizes the local variable booking and the fields that belong to it.
I'd Like to Refactor:
I want to refactor this and render a partial <%= render 'bookings/booking' %> in my index.html.erb file. This partial will render different helper methods that each route to different partials.
Currently my _booking.html.erb file has a bunch of conditional logic that is better suited for a helper... I've tried a bunch of different ways to accomplish this to no avail, usually due to undefined variables..what's an elegant way to accomplish this?
What I've Tried:
Here's a method from my bookings_helper.rb` file:
def incoming_to_cleaner_partial_path(bookings)
return unless booking.status=='pending' && current_user.user_type =='cleaner' && booking.requested_by_id != current_user.id
'bookings/booking_requests/incoming_to_cleaner'
end
I added logic to these methods to determine which partials to render.
in my modified _booking.html.erb file, I call these methods, I pass them a #bookings instance variable param.
<%= render incoming_to_cleaner_partial_path(#bookings) %>
I've also tried this without params.. Neither work..
lastly, I've tried calling a method determine_bookings_to_show inside the helper methods. This method contains the same logic from the controller...
def incoming_to_cleaner_partial_path
determine_bookings_to_show
return unless booking.status=='pending' && current_user.user_type =='cleaner' && booking.requested_by_id != current_user.id
'bookings/booking_requests/incoming_to_cleaner'
end
private
def determine_bookings_to_show
#user = current_user
if #user.user_type == 'host'
#bookings = Booking.where(host_id:#user.id, status: "#{params[:status]}")
else #user.user_type == 'cleaner'
#bookings = Booking.where(cleaner_id:#user.id, status: "#{params[:status]}")
end
end
My main issue is i'm having scope troubles with these partials...

Answer 1

.. in my index [I want to] render different partials [depending on attributes of the booking] ..
I have used render(locals:) for this in the past.
# index.html.erb
#bookings.each do |b|
render_booking(b)
end
# bookings_helper.rb
def render_booking(booking)
if booking.status == 'pending'
render partial: 'path/to/bookings/_pending', locals: { booking: booking }
elsif booking.foobar?
render partial: 'path/to/bookings/_foobar', locals: { booking: booking }
else
# etc.
end
end
Conditionals like this can get complicated, but until then, I think this is an appropriate, practical use of a helper method.
# bookings/_pending.html.erb
<h1>Pending Booking <%= booking.id %></h1>
You will likely need to pass other locals:. I'd avoid using any instance variables in your partials.