#99

backend/app/controllers/materials_controller.rb

@@ -18,7 +18,7 @@ class MaterialsController < ApplicationController
     count = q.count
     materials = q.order(created_at: :desc, id: :desc).limit(limit).offset(offset)
 
-    render json: { materials: MaterialRepr.many(materials), count: count }
+    render json: { materials: MaterialRepr.many(materials, host: request.base_url), count: count }
   end
 
   def show
@@ -29,7 +29,9 @@ class MaterialsController < ApplicationController
         .find_by(id: params[:id])
     return head :not_found unless material
 
-    render json: MaterialRepr.base(material)
+    wiki_page_body = material.tag.tag_name.wiki_page&.current_revision&.body
+
+    render json: MaterialRepr.base(material, host: request.base_url).merge(wiki_page_body:)
   end
 
   def create
@@ -50,7 +52,7 @@ class MaterialsController < ApplicationController
     material.file.attach(file)
 
     if material.save
-      render json: MaterialRepr.base(material), status: :created
+      render json: MaterialRepr.base(material, host: request.base_url), status: :created
     else
       render json: { errors: material.errors.full_messages }, status: :unprocessable_entity
     end
@@ -80,7 +82,7 @@ class MaterialsController < ApplicationController
     end
 
     if material.save
-      render json: MaterialRepr.base(material)
+      render json: MaterialRepr.base(material, host: request.base_url)
     else
       render json: { errors: material.errors.full_messages }, status: :unprocessable_entity
     end

backend/app/controllers/tags_controller.rb

@@ -33,7 +33,7 @@ class TagsController < ApplicationController
         else
           Tag.joins(:tag_name)
         end
-        .includes(:tag_name, tag_name: :wiki_page)
+        .includes(:tag_name, tag_name: :wiki_page, :materials)
     q = q.where(posts: { id: post_id }) if post_id.present?
 
     q = q.where('tag_names.name LIKE ?', "%#{ name }%") if name
@@ -83,7 +83,7 @@ class TagsController < ApplicationController
     tags =
         Tag
         .joins(:tag_name)
-        .includes(:tag_name, tag_name: :wiki_page)
+        .includes(:tag_name, tag_name: :wiki_page, :materials)
         .where(category: [:meme, :character, :material])
         .where(id: tag_ids)
         .order('tag_names.name')
@@ -128,7 +128,7 @@ class TagsController < ApplicationController
     end
 
     base = Tag.joins(:tag_name)
-              .includes(:tag_name, tag_name: :wiki_page)
+              .includes(:tag_name, tag_name: :wiki_page, :materials)
     base = base.where('tags.post_count > 0') if present_only
 
     canonical_hit =
@@ -153,7 +153,7 @@ class TagsController < ApplicationController
 
   def show
     tag = Tag.joins(:tag_name)
-             .includes(:tag_name, tag_name: :wiki_page)
+             .includes(:tag_name, tag_name: :wiki_page, :materials)
              .find_by(id: params[:id])
     if tag
       render json: TagRepr.base(tag)
@@ -167,7 +167,7 @@ class TagsController < ApplicationController
     return head :bad_request if name.blank?
 
     tag = Tag.joins(:tag_name)
-             .includes(:tag_name, tag_name: :wiki_page)
+             .includes(:tag_name, tag_name: :wiki_page, :materials)
              .find_by(tag_names: { name: })
     if tag
       render json: TagRepr.base(tag)

backend/app/models/tag.rb

@@ -73,6 +73,8 @@ class Tag < ApplicationRecord
 
   def has_wiki = wiki_page.present?
 
+  def material_id = materials.first&.id
+
   def self.tagme
     @tagme ||= find_or_create_by_tag_name!('タグ希望', category: :meta)
   end

backend/app/representations/material_repr.rb

@@ -2,22 +2,23 @@
 
 
 module MaterialRepr
-  BASE = { methods: [:content_type],
-           include: { created_by_user: UserRepr::BASE,
+  BASE = { only: [:id, :url, :created_at, :updated_at],
+           methods: [:content_type],
+           include: { tag: TagRepr::BASE,
+                      created_by_user: UserRepr::BASE,
                       updated_by_user: UserRepr::BASE } }.freeze
 
   module_function
 
-  def base(material)
+  def base material, host:
     material.as_json(BASE).merge(
         file: if material.file.attached?
                 Rails.application.routes.url_helpers.rails_storage_proxy_url(
-                    material.file, only_path: false)
-              end,
-        tag: TagRepr.base(material.tag))
+                    material.file, host:)
+              end)
   end
 
-  def many(materials)
-    materials.map { |m| base(m) }
+  def many materials, host:
+    materials.map { |m| base(m, host) }
   end
 end

backend/app/representations/tag_repr.rb

@@ -3,7 +3,7 @@
 
 module TagRepr
   BASE = { only: [:id, :category, :post_count, :created_at, :updated_at],
-           methods: [:name, :has_wiki] }.freeze
+           methods: [:name, :has_wiki, :material_id] }.freeze
 
   module_function