diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index c83b2894..ba92f626 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -2,7 +2,7 @@
 
 # Helpers
 module ApplicationHelper
-  BRACKETS = /[\[\]]/
+  BRACKETS = /[\[\]]/.freeze
 
   # Devuelve el atributo name de un campo anidado en el formato que
   # esperan los helpers *_field
diff --git a/app/models/metadata_belongs_to.rb b/app/models/metadata_belongs_to.rb
index 7dec4f94..16b0e2ed 100644
--- a/app/models/metadata_belongs_to.rb
+++ b/app/models/metadata_belongs_to.rb
@@ -101,6 +101,6 @@ class MetadataBelongsTo < MetadataRelatedPosts
   end
 
   def sanitize(uuid)
-    uuid.to_s.gsub(/[^a-f0-9\-]/i, '')
+    uuid.to_s.gsub(/[^a-f0-9-]/i, '')
   end
 end
diff --git a/app/models/metadata_related_posts.rb b/app/models/metadata_related_posts.rb
index 9e84c446..6ca09f7d 100644
--- a/app/models/metadata_related_posts.rb
+++ b/app/models/metadata_related_posts.rb
@@ -45,12 +45,12 @@ class MetadataRelatedPosts < MetadataArray
   end
 
   def title(post)
-    "#{post&.title&.value || post&.slug&.value} #{post&.date&.value.strftime('%F')} (#{post.layout.humanized_name})"
+    "#{post&.title&.value || post&.slug&.value} #{post&.date&.value&.strftime('%F')} (#{post.layout.humanized_name})"
   end
 
   def sanitize(uuid)
     super(uuid.map do |u|
-      u.to_s.gsub(/[^a-f0-9\-]/i, '')
+      u.to_s.gsub(/[^a-f0-9-]/i, '')
     end)
   end
 end
diff --git a/app/models/post.rb b/app/models/post.rb
index 64669524..a1758464 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -24,8 +24,8 @@ class Post
     'created_at' => { 'type' => 'created_at', 'required' => true },
     'slug' => { 'type' => 'slug', 'required' => true },
     'path' => { 'type' => 'path', 'required' => true },
-    'locale' => { 'alias' => 'lang' },
-  }
+    'locale' => { 'alias' => 'lang' }
+  }.freeze
 
   class PostError < StandardError; end
   class UnknownAttributeError < PostError; end
@@ -141,6 +141,7 @@ class Post
         src = element.attributes['src']
 
         next unless src&.value&.start_with? 'public/'
+
         file = MetadataFile.new(site: site, post: self, document: document, layout: layout)
         file.value['path'] = src.value
 
@@ -202,16 +203,12 @@ class Post
   def method_missing(name, *_args)
     # Limpiar el nombre del atributo, para que todos los ayudantes
     # reciban el método en limpio
-    unless attribute? name
-      raise NoMethodError, I18n.t('exceptions.post.no_method', method: name)
-    end
+    raise NoMethodError, I18n.t('exceptions.post.no_method', method: name) unless attribute? name
 
     define_singleton_method(name) do
       template = layout.metadata[name.to_s]
 
-      if template.key?('alias')
-        return public_send(template['alias'].to_sym)
-      end
+      return public_send(template['alias'].to_sym) if template.key?('alias')
 
       @metadata[name] ||=
         MetadataFactory.build(document: document,
diff --git a/app/services/post_service.rb b/app/services/post_service.rb
index 628d1b63..4d32cba9 100644
--- a/app/services/post_service.rb
+++ b/app/services/post_service.rb
@@ -180,24 +180,24 @@ PostService = Struct.new(:site, :usuarie, :post, :params, keyword_init: true) do
   # Si les usuaries modifican o crean una licencia, considerarla
   # personalizada en el panel.
   def update_site_license!
-    if site.usuarie?(usuarie) && post.layout.name == :license && !site.licencia.custom?
-      site.update licencia: Licencia.find_by_icons('custom')
-    end
+    return unless site.usuarie?(usuarie) && post.layout.name == :license && !site.licencia.custom?
+
+    site.update licencia: Licencia.find_by_icons('custom')
   end
 
   # Encuentra todos los posts anidados y los crea o modifica
   def create_nested_posts!(post, params)
     post.nested_attributes.each do |nested_attribute|
-     nested_metadata = post[nested_attribute]
-     # @todo find_or_initialize
-     nested_post = nested_metadata.has_one || site.posts(lang: post.lang.value).build(layout: nested_metadata.nested)
-     nested_params = params.require(nested_attribute).permit(nested_post.params).to_hash
+      nested_metadata = post[nested_attribute]
+      # @todo find_or_initialize
+      nested_post = nested_metadata.has_one || site.posts(lang: post.lang.value).build(layout: nested_metadata.nested)
+      nested_params = params.require(nested_attribute).permit(nested_post.params).to_hash
 
-     # Completa la relación 1:1
-     nested_params[nested_metadata.inverse.to_s] = post.uuid.value
-     post[nested_attribute].value = nested_post.uuid.value
+      # Completa la relación 1:1
+      nested_params[nested_metadata.inverse.to_s] = post.uuid.value
+      post[nested_attribute].value = nested_post.uuid.value
 
-     files << nested_post.path.absolute if nested_post.update(nested_params)
+      files << nested_post.path.absolute if nested_post.update(nested_params)
     end
   end
 end
diff --git a/config/initializers/core_extensions.rb b/config/initializers/core_extensions.rb
index 6861da45..024a26ab 100644
--- a/config/initializers/core_extensions.rb
+++ b/config/initializers/core_extensions.rb
@@ -126,7 +126,8 @@ module Jekyll
 
         unless spec
           I18n.with_locale(locale) do
-            raise Jekyll::Errors::InvalidThemeName, I18n.t('activerecord.errors.models.site.attributes.design_id.missing_gem', theme: name)
+            raise Jekyll::Errors::InvalidThemeName,
+                  I18n.t('activerecord.errors.models.site.attributes.design_id.missing_gem', theme: name)
           rescue Jekyll::Errors::InvalidThemeName => e
             ExceptionNotifier.notify_exception(e, data: { theme: name, site: File.basename(site.source) })
             raise