Remove nil param

app/models/user/role.rb

@@ -18,7 +18,7 @@ module User::Role
     admin? || other == self
   end
 
-  def can_administer?(other = nil)
+  def can_administer?
     admin? && other != self
   end
 

app/views/account/join_codes/show.html.erb

@@ -21,7 +21,7 @@
   <div class="flex align-center gap-half">
     <input type="text" class="input flex-item-grow" value="<%= url %>" readonly>
 
-    <% if Current.user.can_administer? %>
+    <% if Current.user.admin? %>
       <%= button_to account_join_code_path, method: :delete, class: "btn btn--circle txt-small", data: {
             turbo_confirm: "Are you sure you want to generate a new link? The previous code will stop working." } do %>
         <%= icon_tag "refresh" %>
@@ -65,7 +65,7 @@
       This code has been used <%= @join_code.usage_count %>/<%= @join_code.usage_limit %> times
       (<%= @join_code.active? ? @join_code.usage_limit - @join_code.usage_count : "none" %> remaining)
 
-      <% if Current.user.can_administer? %>
+      <% if Current.user.admin? %>
         <%= link_to edit_account_join_code_path, class: @join_code.active? ? "txt-link" : "txt-negative txt-underline" do %>
           <span>Change limit</span>
         <% end %>

app/views/account/settings/_entropy.html.erb

@@ -4,5 +4,5 @@
     <p class="margin-none-block-start">Fizzy doesn’t let stale cards stick around forever. Cards automatically close as “Not Now” without activity for specific period of time. <em>This is the default, global setting — you can override it on each board.</em></p>
   </header>
 
-  <%= render "entropy/auto_close", model: account.entropy, url: account_entropy_path, disabled: !Current.user.can_administer? %>
+  <%= render "entropy/auto_close", model: account.entropy, url: account_entropy_path, disabled: !Current.user.admin? %>
 </div>

app/views/account/settings/_name.html.erb

@@ -1,7 +1,7 @@
 <%= form_with model: account, url: account_settings_path, method: :put, scope: :account, data: { controller: "form" }, class: "flex gap-half" do |form| %>
-  <strong class="full-width"><%= form.text_field :name, required: true, class: "input input--transparent full-width txt-medium", placeholder: "Account name…", data: { action: "input->form#disableSubmitWhenInvalid" }, readonly: !Current.user.can_administer? %></strong>
+  <strong class="full-width"><%= form.text_field :name, required: true, class: "input input--transparent full-width txt-medium", placeholder: "Account name…", data: { action: "input->form#disableSubmitWhenInvalid" }, readonly: !Current.user.admin? %></strong>
 
-  <% if Current.user.can_administer? %>
+  <% if Current.user.admin? %>
     <%= form.button class: "btn btn--circle btn--link txt-medium", data: { form_target: "submit" }, disabled: form.object do %>
       <%= icon_tag "arrow-right" %>
       <span class="for-screen-reader">Save changes</span>