Fix user edit/registration

- Don't require password to edit
- Fix errors on registration form

app/controllers/users_controller.rb

@@ -14,6 +14,7 @@ class UsersController < ApplicationController
       session[:user_id] = @user.id
       redirect_to root_path, notice: t(".account_created")
     else
+      flash.now.alert = t(".create_failed")
       render :new
     end
   end

app/models/user.rb

@@ -16,7 +16,15 @@ class User < ApplicationRecord
   validates :email,
             format: { with: /\A.*@.*\..*\z/ } # Only very basic regex
 
-  validates :password, confirmation: true
+  validates :password,
+            confirmation: true,
+            length: { in: 12..300 },
+            presence: true,
+            if: :validate_password?
+
+  validates :password_confirmation,
+            presence: true,
+            if: :validate_password?
 
   def to_param
     username
@@ -25,4 +33,10 @@ class User < ApplicationRecord
   def full_name
     "#{first_name} #{last_names}"
   end
+
+  private
+
+  def validate_password?
+    new_record? || password_digest_changed?
+  end
 end

app/views/users/new.turbo_stream.erb

@@ -0,0 +1,12 @@
+<%= turbo_stream.replace "flash_wrapper" do %>
+  <%= render "shared/flash" %>
+<% end %>
+
+<%= turbo_stream.replace "user_form" do %>
+  <%= render partial: "form",
+             locals: {
+               user: @user,
+               button_text: t(".register"),
+               title: t(".register"),
+             } %>
+<% end %>

config/locales/controllers/users/en.yml

@@ -1,5 +1,6 @@
 en:
   users:
+    create_failed: Could not create user account, please correct the errors below.
     account_created: Account created!
     account_updated: Your details have been updated.
     update_failed: Could not update your details.