ruby on rails - Setting hidden field value from path parametrs -


i'm stacked. i'm creating application user can create blog, can put posts. associatins are:

blog :has many posts , posts :belongs blog. blog associated user same way. (blogs nested users). show page of post has link:

= link_to 'edit', edit_post_path(blog_id: blog.id)

where send blog_id in hidden form in post. works fine(http address:)

http://localhost:3000/posts/1/edit?blog_id=1

but when press show button of post(after creating) rails trying find blog post id. adress:

http://localhost:3000/posts/2

and error: couldn't find blog 'id'=2 in line: 

= link_to 'edit', edit_post_path(blog_id: blog.id)

the problem if delete parameters of path can not set in hidden form(blog_id) in edit. how should solve it?

upd: routes:

rails.application.routes.draw   root to: "pages#index"   "users/profile" => "user_blogs#index", :as => "user_root"   devise_for :users, controllers: { registrations: "users/registrations" }   resources :users     resources :blogs   end   resources :posts     resources :comments   end end

post controller:

class postscontroller < applicationcontroller   respond_to :html    before_action :authenticate_user!    expose :blog   expose :post    def show   end    def new   end    def edit   end    def create     post.user = current_user     post.save     respond_with post, location: user_blog_path(post.blog.user, post.blog)   end    def update     post.update(post_params)     respond_with post, location: user_blog_path(post.blog.user, post.blog)   end    def destroy     post.destroy     respond_with post, location: user_blog_path(post.blog.user, post.blog)   end    private    def post_params     params.require(:post).permit(:title, :content, :user_id, :blog_id)   end end


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