Rails Form_for Local Variable

Question

I'm trying to define a form_for with a local variable, like section 3.4.4

I can get it to work using an instance variable, but not with a local one.

This works:

Controller.rb

@new_instance = @instance_creation.get_instance  #gives a proper object

view:

= render :partial => '/shared/instances_new'

partial view:

<%= form_for (@new_instance) do |f| %> 

This does not:

Controller.rb

@new_instance = @instance_creation.get_instance  #gives a proper object

view:

= render :partial => '/shared/instances_new',
                        :new_instance => @new_instance

partial view:

<%= form_for (new_instance) do |f| %> 

error:

undefined local variable or method `new_instance' for #<#<Class:0x007f8e27dd7b30>:0x007f8e27b0f100>

What I am doing wrong?

Answer 1

Try passing object as local

= render :partial => '/shared/instances_new', :locals=>{:new_instance => @new_instance}