Rails get url_for working inside model

Question

Title says it all. It's pretty easy from controllers - just using "view_context". But it doesn't work with models.

E.g ApplicationController.new.view_context.url_for yields in: "undefined method 'host' for nil:NilClass"

ActionView::Base.new(Rails.configuration.paths["app/views"].first).url_for doesn't work as well.

Can this be done without so much pain ?

P.S I need it for my Prawn gem! I wanted to generate the PDF from the model. And apart from generating the links inside of it - it is very successful!

Hope for your help! Thanks in advance!

Take a look at http://stackoverflow.com/questions/4713571/view-helper-link-to-in-model-class — hyperrjas, Jan 23 '13 at 13:47

score 4 · Answer 1 · answered Oct 30 '18 at 11:24

4

Rails 5

include Rails.application.routes.url_helpers

url_for(myModelObject)

answered Oct 30 '18 at 11:24

Confused Vorlon

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score 2 · Accepted Answer · answered Jan 23 '13 at 13:47

2

It might depend on Rails version, but generally this method is now defined in Rails.application.routes. It expects you to provide hash with url_options, with :host key among others.

answered Jan 23 '13 at 13:47

samuil

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Thank you! But can I somehow skip the :host part ? It should be determined automatically, right ? – Dmitri Jan 23 '13 at 13:51
@samuli, please take a look ;) – Dmitri Jan 23 '13 at 14:08
I'd really like to help, but I don't know the answer :) I was struggling with similar problem, not so long ago, but without success. – samuil Jan 23 '13 at 14:10

Rails get url_for working inside model

2 Answers2