From 4893170da20eee28c016408a0f72f1996343a048 Mon Sep 17 00:00:00 2001
From: Aaron Patterson <aaron.patterson@gmail.com>
Date: Wed, 13 Apr 2011 14:03:35 -0700
Subject: adding a type cast method for prepared statements

---
 .../connection_adapters/abstract/quoting.rb        | 36 ++++++++++++++++++++++
 .../connection_adapters/sqlite_adapter.rb          |  2 +-
 2 files changed, 37 insertions(+), 1 deletion(-)

(limited to 'activerecord/lib')

diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 325665dd87..5634e53e80 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -39,6 +39,42 @@ module ActiveRecord
         end
       end
 
+      # Cast a +value+ to a type that the database understands. For example,
+      # SQLite does not understand dates, so this method will convert a Date
+      # to a String.
+      def type_cast(value, column)
+        return value.id if value.respond_to?(:quoted_id)
+
+        case value
+        when String, ActiveSupport::Multibyte::Chars
+          value = value.to_s
+          return value unless column
+
+          case column.type
+          when :binary then value
+          when :integer then value.to_i
+          when :float then value.to_f
+          else
+            value
+          end
+
+        when true, false
+          if column && column.type == :integer
+            value ? 1 : 0
+          else
+            value ? 't' : 'f'
+          end
+          # BigDecimals need to be put in a non-normalized form and quoted.
+        when nil        then nil
+        when BigDecimal then value.to_f
+        when Numeric    then value
+        when Date, Time then quoted_date(value)
+        when Symbol     then value.to_s
+        else
+          YAML.dump(value)
+        end
+      end
+
       # Quotes a string, escaping any ' (single quote) and \ (backslash)
       # characters.
       def quote_string(s)
diff --git a/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
index 8ef286b473..14c4fd689b 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
@@ -165,7 +165,7 @@ module ActiveRecord
             cols = cache[:cols] ||= stmt.columns
             stmt.reset!
             stmt.bind_params binds.map { |col, val|
-              col ? col.type_cast(val) : val
+              type_cast(val, col)
             }
           end
 
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