While working on belt-tracker I had an issue with nested routes and using the
tag provided by Rails. Every time I tried loading the form I was getting an error:
no method found `lessons_path`
I had :lessons as a nested route in my gym routes and that was causing a pathing error but I was struggling with getting the lesson to assign to the gym using the correct ID. I ended up using a hidden field to store the gym_id while sending the form and moving the :lessons resources to be both nested and not nested, which fixed the pathing errors.
New Lesson Form:
<%= form_for(@gym.lessons.new) do |f| %> <%= f.label "Name" %> <%= f.text_field :name %> <%= f.label "Length", "Length in hours (eg: 1, 0.5, 1.5)" %> <%= f.text_field :length %> <%= f.hidden_field :gym_id, value: params[:gym_id] %> <%= f.submit %> <% end %>