Render Hashtag Error Rails 4

[RailsCod3rFuture]

Getting Missing partial posts/_post with {:locale=>[:en], :formats=>[:html], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :slim, :haml, :jbuilder]}. Searched in: When I click on hashtag

def render_hashtaggable(hashtaggable)
klass = hashtaggable.class.to_s.underscore
view_dirname = klass.pluralize
partial = klass
render "#{view_dirname}/#{partial}", {klass.to_sym => hashtaggable}
end
end

render "#{view_dirname}/#{partial}", {klass.to_sym => hashtaggable} is the line that's searching for the missing partial _post.

Maybe, you can look into this error to see why redirecting to the hashtags show views aren't working properly.

[RailsCod3rFuture]

I created a makeshift _post view that was empty to bypass the error.

[RailsCod3rFuture]

It's looking inside of the partial, only to find the user object, but it's not rendering without the ID of the user. Fix?
ActionView::Template::Error (undefined method `user' for nil:NilClass):