Edit Account#biography

app/policies/settings/profile_policy.rb

@@ -6,6 +6,6 @@ class Settings::ProfilePolicy < ApplicationPolicy
   end
 
   def permitted_attributes_for_update
-    %i[username]
+    %i[username biography]
   end
 end

app/views/settings/profiles/edit.html.erb

@@ -10,6 +10,7 @@
 
         <div class="form-inputs">
           <%= f.input :username, required: true %>
+          <%= f.input :biography %>
         </div>
 
         <div class="form-actions">

factories/accounts.rb

@@ -1,7 +1,9 @@
 # frozen_string_literal: true
 
 FactoryBot.define do
-  factory :guest_account, class: Account
+  factory :guest_account, class: Account do
+    biography { Faker::Lorem.paragraph }
+  end
 
   factory :usual_account, parent: :guest_account do
     association :user

spec/requests/settings/profile/update_spec.rb

@@ -7,7 +7,8 @@ RSpec.describe 'PATCH/PUT /settings/profile' do
 
   let :account_attributes do
     {
-      username: Faker::Internet.username(3..36, %w[_]),
+      username:  Faker::Internet.username(3..36, %w[_]),
+      biography: Faker::Lorem.paragraph,
     }
   end
 
@@ -35,6 +36,13 @@ RSpec.describe 'PATCH/PUT /settings/profile' do
         .to(account_attributes[:username])
     end
 
+    specify do
+      expect { make_request }.to \
+        change { current_account.reload.biography }
+        .from(current_account.biography)
+        .to(account_attributes[:biography])
+    end
+
     context 'after request' do
       before { make_request }