I have routes.rb:
#that have default
# path verb
# user_index get "user#index''
# post "user#create"
#new_user get "user#new"
for moment i using method "new" as new.htmk(form login)&"create" as process get data from db.
<%=form_for :blog,url: user_index_path do lbl%>
@blog = Box.new
if i try make routes like this
get '/user/login',to: "user#login"
that only for view html verb get,how make process it that verb post like deafult routes? thank you.
Start here: http://guides.rubyonrails.org/routing.html
Read that entire page, and try what it suggests. If you have questions after that, post what you tried and what happened when you did so here, and someone can help you.
As a starting hint, the resources helper creates routes for all 7 of the REST actions. It's tightly coupled with a "normal" Rails controller that does CRUD for a table in the database. If your controller is custom, does something other than the usual, then you may need to get out and push, as you have noticed. But actually, if you are finding that to be the case, it may be that you have another path you could follow. user#login might actually be session#new in disguise. There's no particular reason for you to couple login with user, since the user is not modified by being logged in.