How to access instance variable in partial from another controller

Question

I'm stuck trying to access instance variables from one controller/view to another.

ProductsController

def index
  @searcher = build_searcher(params.merge(include_images: true))
  @products = @searcher.retrieve_products
end

I want to gain access to @products in _header.html.erb partial, which is a part of the main layout page application.html.erb.

Which local variable are you having problem with? I don't see any. — sawa
– sawa, Commented Mar 7, 2019 at 10:10
@pfc And what if you render header for some other action, where @products is not defined? — Vasilisa
– Vasilisa, Commented Mar 7, 2019 at 15:54

Anand · Accepted Answer · 2019-03-07 10:18:16Z

1

It's always a good practice to pass local variable inside a partial, to make it useable at more than one place. so you should pass @products inside a local variable in partial -

Unless i'm missing something variable should be @products instead of @product as index action has @products

= render partial: 'header', locals: {product: @product}

In _header.html.erb product local variable will be accessible which is @product

answered Mar 7, 2019 at 10:18

Anand

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1 Comment

pfc Over a year ago

Let me reformulate question(maybe you haven't seen edit). I want to gain access of INSTANCE variable @products from products controller, index action. I need that in my _header partial view which is part of main layout of page

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