Rendering partial view resulting in error

Question

rails 3.2 Ruby 2.1.5

I am trying to have a single form for a ticket, that includes a number of sections.

One of the sectios is called customer_info

In the app/views/tickets/show.html.slim, I have:

= render 'tickets/sections/customer_info', locals: { customer_info: CustomerInfo.new, ticket: @ticket }

and in my app/views/tickets/sections/_customer_info.html.slim, I have:

= form_for customer_info do |f|
  - f.hidden_field :ticket_id, :value => ticket.id
  .form-horizontal-column.customer-info
    .form-group
      = f.label :pre_tax_total
      = f.text_field :pre_tax_total, maxlength: 50
    .form-group
      = f.label :post_tax_total
      = f.text_field :post_tax_total, maxlength: 50
   .actions = f.submit 'Save'
  .clear    

When the app attempts to render the customer_info form, I get the following error message:

undefined method `model_name' for NilClass:Class

When it hits the first line in the form:

= form_for customer_info do |f|

Any idea how to do this?

Answer 1

Try to change the render code from

= render 'tickets/sections/customer_info', locals: { customer_info: CustomerInfo.new, ticket: @ticket }

to

= render partial: 'tickets/sections/customer_info', locals: { customer_info: CustomerInfo.new, ticket: @ticket }

Always remember to add partial if locals is used.