init project

app/views/libraries/index.json.jbuilder

@@ -0,0 +1,21 @@
+json.count @count
+json.libraries do
+  json.array! @libraries.each do |library|
+    json.extract! library, :id, :title, :content, :author_name, :author_school_name, :status, :visited_count
+
+    json.cover_url library.cover_id.present? ? download_url(library.cover) : nil
+
+    json.praise_count library.praises_count
+    json.download_count @download_count_map.fetch(library.id, 0)
+
+    json.published_at library.display_published_at
+    json.created_at library.display_created_at
+
+    # 标签
+    json.tags do
+      json.array! library.library_tags.each do |tag|
+        json.extract! tag, :id, :name
+      end
+    end
+  end
+end