Fix deprecation warnings for rails 6.1

app/models/block.rb

@@ -11,9 +11,9 @@ class Block < ApplicationRecord
   validate :not_blocking_yourself
 
   def not_blocking_yourself
-    if self.user.person.id == self.person_id
-      errors[:person_id] << "stop blocking yourself!"
-    end
+    return unless user.person.id == person_id
+
+    errors.add(:person_id, "stop blocking yourself!")
   end
 
   # @return [Array<Person>] The recipient of the block

app/models/message.rb

@@ -37,10 +37,8 @@ class Message < ApplicationRecord
   private
 
   def participant_of_parent_conversation
-    if conversation && !conversation.participants.include?(author)
-      errors[:base] << "Author is not participating in the conversation"
-    else
-      true
-    end
+    return unless conversation&.participants&.exclude?(author)
+
+    errors.add(:base, "Author is not participating in the conversation")
   end
 end

app/models/report.rb

@@ -22,15 +22,15 @@ class Report < ApplicationRecord
   end
 
   def entry_does_not_exist
-    if Report.where(item_id: item_id, item_type: item_type).exists?(user_id: user_id)
-      errors[:base] << 'You cannot report the same post twice.'
-    end
+    return unless Report.where(item_id: item_id, item_type: item_type).exists?(user_id: user_id)
+
+    errors.add(:base, "You cannot report the same post twice.")
   end
 
   def post_or_comment_does_exist
-    if Post.find_by_id(item_id).nil? && Comment.find_by_id(item_id).nil?
-      errors[:base] << 'Post or comment was already deleted or doesn\'t exists.'
-    end
+    return unless Post.find_by(id: item_id).nil? && Comment.find_by(id: item_id).nil?
+
+    errors.add(:base, "Post or comment was already deleted or doesn't exists.")
   end
 
   def destroy_reported_item

app/models/reshare.rb

@@ -86,9 +86,6 @@ class Reshare < Post
   private
 
   def root_must_be_public
-    if self.root && !self.root.public
-      errors[:base] << "Only posts which are public may be reshared."
-      return false
-    end
+    errors.add(:base, "Only posts which are public may be reshared.") if root && !root.public
   end
 end

app/models/status_message.rb

@@ -130,7 +130,7 @@ class StatusMessage < Post
   private
 
   def presence_of_content
-    errors[:base] << "Cannot create a StatusMessage without content" if text_and_photos_blank?
+    errors.add(:base, "Cannot create a StatusMessage without content") if text_and_photos_blank?
   end
 end
 

app/models/user.rb

@@ -535,10 +535,10 @@ class User < ApplicationRecord
   end
 
   def no_person_with_same_username
-    diaspora_id = "#{self.username}#{User.diaspora_id_host}"
-    if self.username_changed? && Person.exists?(:diaspora_handle => diaspora_id)
-      errors[:base] << 'That username has already been taken'
-    end
+    diaspora_id = "#{username}#{User.diaspora_id_host}"
+    return unless username_changed? && Person.exists?(diaspora_handle: diaspora_id)
+
+    errors.add(:base, "That username has already been taken")
   end
 
   def close_account!

app/views/users/_edit.haml

@@ -34,7 +34,7 @@
       .col-md-12
         %h3= t(".change_password")
         = form_for @user, url: edit_user_path, html: {method: :put, class: "form-horizontal"} do |f|
-          - if (@user.errors.keys & %i(password password_confirmation current_password)).present?
+          - if (@user.errors.attribute_names & %i[password password_confirmation current_password]).present?
             = f.error_messages
           .form-group
             = f.label :current_password, t(".current_password"), class: "col-sm-6 control-label"

lib/diaspora/taggable.rb

@@ -15,8 +15,8 @@ module Diaspora
 
         # tag's name is limited to 255 charchters according to ActsAsTaggableOn gem, so we check the length of the name for each tag
         def tag_name_max_length
-          self.tag_list.each do |tag|
-            errors[:tags] << I18n.t('tags.name_too_long', :count => 255, :current_length => tag.length) if tag.length > 255
+          tag_list.each do |tag|
+            errors.add(:tags, I18n.t("tags.name_too_long", count: 255, current_length: tag.length)) if tag.length > 255
           end
         end
         protected :tag_name_max_length

spec/views/status_messages/_status_message.mobile.haml_spec.rb

@@ -10,8 +10,9 @@ describe "status_messages/_status_message.mobile.haml" do
     )
     post = FactoryGirl.create(:status_message, public: true, open_graph_cache: open_graph_cache)
 
-    render template: "status_messages/_status_message.mobile.haml", locals: {post: post, photos: post.photos}
+    render template: "status_messages/_status_message", locals: {post: post, photos: post.photos}
 
     expect(rendered).to_not include("<script>")
+    expect(rendered).to include("&lt;script&gt;alert(0);&lt;/script&gt;")
   end
 end