5 files changed, 17 insertions, 17 deletions
diff --git a/guides/source/action_view_overview.md b/guides/source/action_view_overview.md
index bd8e5ce4f2..75f2989f5b 100644
--- a/guides/source/action_view_overview.md
+++ b/guides/source/action_view_overview.md
@@ -1492,7 +1492,7 @@ number_to_human_size(1234567)       # => 1.2 MB
 Formats a number as a percentage string.
 
 ```ruby
-number_to_percentage(100, :precision => 0)        # => 100%
+number_to_percentage(100, precision: 0)        # => 100%
 ```
 
 #### number_to_phone
diff --git a/guides/source/active_record_callbacks.md b/guides/source/active_record_callbacks.md
index 01401cc340..2e70e64b39 100644
--- a/guides/source/active_record_callbacks.md
+++ b/guides/source/active_record_callbacks.md
@@ -343,7 +343,7 @@ By using the `after_commit` callback we can account for this case.
 
 ```ruby
 class PictureFile < ActiveRecord::Base
-  after_commit :delete_picture_file_from_disk, :on => [:destroy]
+  after_commit :delete_picture_file_from_disk, on: [:destroy]
 
   def delete_picture_file_from_disk
     if File.exist?(filepath)
diff --git a/guides/source/active_record_querying.md b/guides/source/active_record_querying.md
index 031a203f08..18a5342a2f 100644
--- a/guides/source/active_record_querying.md
+++ b/guides/source/active_record_querying.md
@@ -711,7 +711,7 @@ Post.order('id DESC').limit(20).unscope(:order, :limit) = Post.all
 You can additionally unscope specific where clauses. For example:
 
 ```ruby
-Post.where(:id => 10).limit(1).unscope(where: :id, :limit).order('id DESC') = Post.order('id DESC')
+Post.where(id: 10).limit(1).unscope(:where, :limit).order('id DESC') = Post.order('id DESC')
 ```
 
 ### `only`
diff --git a/guides/source/form_helpers.md b/guides/source/form_helpers.md
index 7f37a298b1..11e8db9e88 100644
--- a/guides/source/form_helpers.md
+++ b/guides/source/form_helpers.md
@@ -553,7 +553,7 @@ outputs (with actual option values omitted for brevity)
 which results in a `params` hash like
 
 ```ruby
-{:person => {'birth_date(1i)' => '2008', 'birth_date(2i)' => '11', 'birth_date(3i)' => '22'}}
+{'person' => {'birth_date(1i)' => '2008', 'birth_date(2i)' => '11', 'birth_date(3i)' => '22'}}
 ```
 
 When this is passed to `Person.new` (or `update`), Active Record spots that these parameters should all be used to construct the `birth_date` attribute and uses the suffixed information to determine in which order it should pass these parameters to functions such as `Date.civil`.
@@ -881,19 +881,19 @@ end
 
 ```ruby
 {
-    :person => {
-        :name => 'John Doe',
-        :addresses_attributes => {
-            '0' => {
-                :kind => 'Home',
-                :street => '221b Baker Street',
-            },
-            '1' => {
-                :kind => 'Office',
-                :street => '31 Spooner Street'
-            }
-        }
+  'person' => {
+    'name' => 'John Doe',
+    'addresses_attributes' => {
+      '0' => {
+        'kind' => 'Home',
+        'street' => '221b Baker Street'
+      },
+      '1' => {
+        'kind' => 'Office',
+        'street' => '31 Spooner Street'
+      }
     }
+  }
 }
 ```
 
diff --git a/guides/source/index.html.erb b/guides/source/index.html.erb
index a8e4525c67..57c224c165 100644
--- a/guides/source/index.html.erb
+++ b/guides/source/index.html.erb
@@ -19,7 +19,7 @@ Ruby on Rails Guides
   <h3><%= section['name'] %></h3>
   <dl>
     <% section['documents'].each do |document| %>
-      <%= guide(document['name'], document['url'], :work_in_progress => document['work_in_progress']) do %>
+      <%= guide(document['name'], document['url'], work_in_progress: document['work_in_progress']) do %>
         <p><%= document['description'] %></p>
       <% end %>
     <% end %>