Fix bug when Column is trying to type cast boolean values to integer.

This can occur if the user is using :integer columns to store boolean
values. Now we are handling the boolean values but it still raises if
the value can't type cast to integer and is not a boolean. See #7509.

Fixes #8067.

Conflicts:
	activerecord/CHANGELOG.md

1 files changed, 13 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/column.rb b/activerecord/lib/active_record/connection_adapters/column.rb
index 6dcab2e0bd..76f8e899ed 100644
--- a/activerecord/lib/active_record/connection_adapters/column.rb
+++ b/activerecord/lib/active_record/connection_adapters/column.rb
@@ -94,7 +94,7 @@ module ActiveRecord
 
         case type
         when :string, :text        then value
-        when :integer              then value.to_i
+        when :integer              then klass.value_to_integer(value)
         when :float                then value.to_f
         when :decimal              then klass.value_to_decimal(value)
         when :datetime, :timestamp then klass.string_to_time(value)
@@ -115,7 +115,7 @@ module ActiveRecord
 
         case type
         when :string, :text        then var_name
-        when :integer              then "(#{var_name}.to_i)"
+        when :integer              then "#{klass}.value_to_integer(#{var_name})"
         when :float                then "#{var_name}.to_f"
         when :decimal              then "#{klass}.value_to_decimal(#{var_name})"
         when :datetime, :timestamp then "#{klass}.string_to_time(#{var_name})"
@@ -198,6 +198,17 @@ module ActiveRecord
           end
         end
 
+        # Used to convert values to integer.
+        # handle the case when an integer column is used to store boolean values
+        def value_to_integer(value)
+          case value
+          when TrueClass, FalseClass
+            value ? 1 : 0
+          else
+            value.to_i
+          end
+        end
+
         # convert something to a BigDecimal
         def value_to_decimal(value)
           # Using .class is faster than .is_a? and