区を追加し、テーブルを 1 つに

Gemfile

@@ -11,4 +11,4 @@ gemspec
 # your gem to rubygems.org.
 
 # To use debugger
-# gem 'ruby-debug19', :require => 'ruby-debug'
+gem 'ruby-debug19', :require => 'ruby-debug'

Gemfile.lock

@@ -2,6 +2,7 @@ PATH
   remote: .
   specs:
     japanese_local_goverment (0.0.1)
+      composite_primary_keys
       rails (~> 3.1)
 
 GEM
@@ -34,13 +35,19 @@ GEM
     activesupport (3.2.2)
       i18n (~> 0.6)
       multi_json (~> 1.0)
+    archive-tar-minitar (0.5.2)
     arel (3.0.2)
     builder (3.0.0)
+    columnize (0.3.6)
+    composite_primary_keys (5.0.1)
+      activerecord (~> 3.2.0)
     erubis (2.7.0)
     hike (1.2.1)
     i18n (0.6.0)
     journey (1.0.3)
     json (1.6.5)
+    linecache19 (0.5.12)
+      ruby_core_source (>= 0.1.4)
     mail (2.4.1)
       i18n (>= 0.4.0)
       mime-types (~> 1.16)
@@ -73,6 +80,16 @@ GEM
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
+    ruby-debug-base19 (0.11.25)
+      columnize (>= 0.3.1)
+      linecache19 (>= 0.5.11)
+      ruby_core_source (>= 0.1.4)
+    ruby-debug19 (0.11.6)
+      columnize (>= 0.3.1)
+      linecache19 (>= 0.5.11)
+      ruby-debug-base19 (>= 0.11.19)
+    ruby_core_source (0.1.5)
+      archive-tar-minitar (>= 0.5.2)
     sprockets (2.1.2)
       hike (~> 1.2)
       rack (~> 1.0)
@@ -90,4 +107,5 @@ PLATFORMS
 
 DEPENDENCIES
   japanese_local_goverment!
+  ruby-debug19
   sqlite3