Fix File.exists? to File.exist? for compatibility with Ruby 3.2

Author: kimihito

app/controllers/docs_controller.rb

@@ -32,9 +32,9 @@ def show
     if @meta_image.end_with? '.webp'
       # .webp -> .jpg
       # .webp -> .png
-      @meta_image.gsub!('.webp', '.jpg')  if File.exists? "public/#{@meta_image[0..-6]}.jpg"
-      @meta_image.gsub!('.webp', '.jpeg') if File.exists? "public/#{@meta_image[0..-6]}.jpeg"
-      @meta_image.gsub!('.webp', '.png')  if File.exists? "public/#{@meta_image[0..-6]}.png"
+      @meta_image.gsub!('.webp', '.jpg')  if File.exist? "public/#{@meta_image[0..-6]}.jpg"
+      @meta_image.gsub!('.webp', '.jpeg') if File.exist? "public/#{@meta_image[0..-6]}.jpeg"
+      @meta_image.gsub!('.webp', '.png')  if File.exist? "public/#{@meta_image[0..-6]}.png"
     end
 
     # Add here if you want to optimize meta description.

app/models/podcast.rb

@@ -21,7 +21,7 @@ def path
   def exists?(offset: 0)
     return false if self.path.include?("\u0000")
     return false if (self.id + offset).zero?
-    File.exists?("#{DIR_PATH}/#{id + offset}.md")
+    File.exist?("#{DIR_PATH}/#{id + offset}.md")
   end
 
   def cover

spec/models/podcast_spec.rb

@@ -19,11 +19,11 @@
 
     context 'offset 省略' do
       before :each do
-        allow(File).to receive(:exists?) { false }
+        allow(File).to receive(:exist?) { false }
       end
 
       it 'ファイルあり ⇒ true' do
-        allow(File).to receive(:exists?).with("public/podcasts/#{@podcast.id}.md") { true }
+        allow(File).to receive(:exist?).with("public/podcasts/#{@podcast.id}.md") { true }
 
         expect(@podcast.exists?).to eq(true)
       end
@@ -35,11 +35,11 @@
 
     context 'offset 指定' do
       before :each do
-        allow(File).to receive(:exists?) { false }
+        allow(File).to receive(:exist?) { false }
       end
 
       it 'ファイルあり ⇒ true' do
-        allow(File).to receive(:exists?).with("public/podcasts/#{@podcast.id + 1}.md") { true }
+        allow(File).to receive(:exist?).with("public/podcasts/#{@podcast.id + 1}.md") { true }
 
         expect(@podcast.exists?(offset: 1)).to eq(true)
       end