ruby on rails - Unable to change URL path after updating attributes with friendly_id -

i've been following railscast tutorial on how implement friendly_id , reason url's doesn't change after update attributes.

say registered user :fullname 'john doe' creates slug /john-doe successfully. if update name 'test user' url still /john-doe

my current setup this:

users_controller

def show  @user = user.friendly.find(params[:id]) end 

model - user.rb

extend friendlyid  friendly_id :fullname, use: [:slugged, :history] 

i've migrated

class addslugstousers < activerecord::migration  def change   add_column :users, :slug, :string   add_index :users, :slug, unique: true  end end 

so working. installed

rails generate friendly_id 

and done:

user.find_each(&:save) 

in rails c

what doing wrong?

friendly_id

it's common issue friendly_id - it defaults setting slug if slug attribute blank:

---

documentation

as of friendlyid 5.0, slugs generated when slug field nil. if want slug regenerated,set slug field nil:

restaurant.friendly_id # joes-diner restaurant.name = "the plaza diner" restaurant.save! restaurant.friendly_id # joes-diner restaurant.slug = nil restaurant.save! restaurant.friendly_id # the-plaza-diner 

you can override #should_generate_new_friendly_id? method, lets control when new friendly ids set:

class post < activerecord::base   extend friendlyid   friendly_id :title, :use => :slugged    def should_generate_new_friendly_id?     title_changed?   end end 

if want extend default behavior but, adding own conditions, don't forget invoke super implementation:

class category < activerecord::base   extend friendlyid   friendly_id :name, :use => :slugged    def should_generate_new_friendly_id?     name_changed? || super   end end 

---

for you, i'd recommend:

#app/models/user.rb class user < activerecord::base    ...     def should_generate_new_friendly_id?       name_changed? || super    end end