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Ruby User Authentication with Rails Password Resets and Testing Updating a User's Forgotten Password

doubts about some lines of code I do not understand

  1. in the update method of password_resets_controller.rb this line
@user = User.find_by(password_reset_token: params[:id])

I know that that line finds the user using the rest token, what I do not understand is the params[:id] I mean in the rspec I could notice that you send the param like this

get :edit, id: user.password_reset_token

but I do not know where do you pass id: for make it available in the controller.

  1. I do not understand the way Jason creates the reset password form
form_for @user, url: password_reset_path(@user.password_reset_token), html: {  method: :path}

the I do not understand the "method: :path what is it for and what does it mean?