deletes

app/models/communication/website/category.rb

@@ -79,7 +79,11 @@ class Communication::Website::Category < ApplicationRecord
   end
 
   def git_dependencies_static
-    posts
+    descendents + posts
+  end
+
+  def git_destroy_dependencies_static
+    descendents
   end
 
   def update_children_paths

app/models/communication/website/home.rb

@@ -42,4 +42,7 @@ class Communication::Website::Home < ApplicationRecord
     active_storage_blobs
   end
 
+  def git_destroy_dependencies_static
+    active_storage_blobs
+  end
 end

app/models/communication/website/page.rb

@@ -76,7 +76,11 @@ class Communication::Website::Page < ApplicationRecord
   end
 
   def git_dependencies_static
-    descendents + siblings + active_storage_blobs
+    descendents + active_storage_blobs + siblings
+  end
+
+  def git_destroy_dependencies_static
+    descendents + active_storage_blobs
   end
 
   def to_s

app/models/communication/website/post.rb

@@ -75,6 +75,10 @@ class Communication::Website::Post < ApplicationRecord
     [author] + categories + active_storage_blobs
   end
 
+  def git_destroy_dependencies_static
+    explicit_active_storage_blobs
+  end
+
   def to_s
     "#{title}"
   end

app/models/concerns/with_git.rb

@@ -41,6 +41,10 @@ module WithGit
     websites_with_fallback.each do |website|
       identifiers.each do |identifier|
         Communication::Website::GitFile.sync website, self, identifier, destroy: true
+        dependencies = send "git_destroy_dependencies_#{identifier}"
+        dependencies.each do |object|
+          Communication::Website::GitFile.sync website, object, identifier, destroy: true
+        end
       end
       website.git_repository.sync!
     end
@@ -82,4 +86,8 @@ module WithGit
   def git_dependencies_static
     []
   end
+
+  def git_destroy_dependencies_static
+    []
+  end
 end

app/models/concerns/with_media.rb

@@ -2,8 +2,15 @@ module WithMedia
   extend ActiveSupport::Concern
 
   def active_storage_blobs
-    blob_ids = [best_featured_image&.blob_id, rich_text_blob_ids].flatten.compact
-    university.active_storage_blobs.where(id: blob_ids)
+    explicit_active_storage_blobs.or inherited_active_storage_blobs
+  end
+
+  def explicit_active_storage_blobs
+    blobs_with_ids [featured_image&.blob_id, rich_text_blob_ids]
+  end
+
+  def inherited_active_storage_blobs
+    blobs_with_ids [best_featured_image]
   end
 
   def rich_text_reflection_names
@@ -20,4 +27,10 @@ module WithMedia
   def best_featured_image(fallback: true)
     featured_image
   end
+
+  protected
+
+  def blobs_with_ids(ids)
+    university.active_storage_blobs.where(id: ids.flatten.compact)
+  end
 end

app/models/research/journal.rb

@@ -25,8 +25,8 @@ class Research::Journal < ApplicationRecord
 
   belongs_to :university
   has_many :websites, class_name: 'Communication::Website', as: :about
-  has_many :volumes, foreign_key: :research_journal_id
-  has_many :articles, foreign_key: :research_journal_id
+  has_many :volumes, foreign_key: :research_journal_id, dependent: :destroy
+  has_many :articles, foreign_key: :research_journal_id, dependent: :destroy
   has_many :researchers, through: :articles
 
   scope :ordered, -> { order(:title) }
@@ -42,4 +42,8 @@ class Research::Journal < ApplicationRecord
   def git_dependencies_static
     articles + volumes + researchers
   end
+
+  def git_destroy_dependencies_static
+    articles + volumes
+  end
 end

app/models/research/journal/volume.rb

@@ -32,7 +32,7 @@ class Research::Journal::Volume < ApplicationRecord
 
   belongs_to :university
   belongs_to :journal, foreign_key: :research_journal_id
-  has_many :articles, foreign_key: :research_journal_volume_id
+  has_many :articles, foreign_key: :research_journal_volume_id, dependent: :nullify
   has_many :websites, -> { distinct }, through: :journal
   has_many :researchers, through: :articles