Turn classic_pagination plugin into a library

[rails.git] / lib / migrate.rb

diff --git a/lib/migrate.rb b/lib/migrate.rb
index 737ff57ece8f767efaf3310dba0d3065b07ccc71..7549add2abfb7e5623a23dbd26f8981c0e4ab6a2 100644 (file)
--- a/lib/migrate.rb
+++ b/lib/migrate.rb
@@ -1,38 +1,130 @@
 module ActiveRecord
   module ConnectionAdapters
     module SchemaStatements
+      def quote_column_names(column_name)
+        Array(column_name).map { |e| quote_column_name(e) }.join(", ")
+      end
+
       def add_primary_key(table_name, column_name, options = {})
-        index_name = options[:name]
         column_names = Array(column_name)
         quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
-        execute "ALTER TABLE #{table_name} ADD PRIMARY KEY #{quote_column_name(index_name)} (#{quoted_column_names})"
+        execute "ALTER TABLE #{table_name} ADD PRIMARY KEY (#{quoted_column_names})"
       end
 
-      alias_method :old_add_column_options!, :add_column_options!
+      def remove_primary_key(table_name)
+        execute "ALTER TABLE #{table_name} DROP PRIMARY KEY"
+      end
 
-      def add_column_options!(sql, options)
-        old_add_column_options!(sql, options)
-        sql << " #{options[:options]}"
+      def add_foreign_key(table_name, column_name, reftbl, refcol = nil)
+        execute "ALTER TABLE #{table_name} ADD " +
+          "FOREIGN KEY (#{quote_column_names(column_name)}) " +
+          "REFERENCES #{reftbl} (#{quote_column_names(refcol || column_name)})"
+      end
+
+      def remove_foreign_key(table_name, column_name, reftbl, refcol = nil)
+        execute "ALTER TABLE #{table_name} DROP " +
+          "CONSTRAINT #{table_name}_#{column_name[0]}_fkey"
       end
 
       alias_method :old_options_include_default?, :options_include_default?
 
       def options_include_default?(options)
-        old_options_include_default?(options) && !(options[:options] =~ /AUTO_INCREMENT/i)
+        return false if options[:options] =~ /AUTO_INCREMENT/i
+        return old_options_include_default?(options)
+      end
+
+      alias_method :old_add_column_options!, :add_column_options!
+
+      def add_column_options!(sql, options)
+        sql << " UNSIGNED" if options[:unsigned]
+        old_add_column_options!(sql, options)
+        sql << " #{options[:options]}"
       end
     end
 
-    class MysqlAdapter
+    class PostgreSQLAdapter
       alias_method :old_native_database_types, :native_database_types
 
       def native_database_types
         types = old_native_database_types
-        types[:bigint] = { :name => "bigint", :limit => 20 }
+        types[:double] = { :name => "double precision" }
+        types[:integer_pk] = { :name => "serial PRIMARY KEY" }
+        types[:bigint_pk] = { :name => "bigserial PRIMARY KEY" }
+        types[:bigint_pk_64] = { :name => "bigserial PRIMARY KEY" }
+        types[:bigint_auto_64] = { :name => "bigint" } #fixme: need autoincrement?
+        types[:bigint_auto_11] = { :name => "bigint" } #fixme: need autoincrement?
+        types[:bigint_auto_20] = { :name => "bigint" } #fixme: need autoincrement?
+        types[:four_byte_unsigned] = { :name => "bigint" } # meh
+        types[:inet] = { :name=> "inet" }
+
+        enumerations.each_key do |e|
+          types[e.to_sym]= { :name => e }
+        end
+
         types
       end
+
+      def myisam_table
+        return { :id => false, :force => true, :options => ""}
+      end
+
+      def innodb_table
+        return { :id => false, :force => true, :options => ""}
+      end
+
+      def innodb_option
+        return ""
+      end
+
+      def change_engine (table_name, engine)
+      end
+
+      def add_fulltext_index (table_name, column)
+        execute "CREATE INDEX #{table_name}_#{column}_idx on #{table_name} (#{column})"
+      end
+
+      def enumerations
+        @enumerations ||= Hash.new
+      end
+
+      def create_enumeration (enumeration_name, values)
+        enumerations[enumeration_name] = values
+        execute "create type #{enumeration_name} as enum ('#{values.join '\',\''}')"
+      end
+
+      def drop_enumeration (enumeration_name)
+        execute "drop type #{enumeration_name}"
+        enumerations.delete(enumeration_name)
+      end
+
+      def alter_primary_key(table_name, new_columns)
+        execute "alter table #{table_name} drop constraint #{table_name}_pkey; alter table #{table_name} add primary key (#{new_columns.join(',')})"
+      end
+
+      def interval_constant(interval)
+        "'#{interval}'::interval"
+      end
+
+      def add_index(table_name, column_name, options = {})
+        column_names = Array(column_name)
+        index_name   = index_name(table_name, :column => column_names)
+
+        if Hash === options # legacy support, since this param was a string
+          index_type = options[:unique] ? "UNIQUE" : ""
+          index_name = options[:name] || index_name
+          index_method = options[:method] || "BTREE"
+        else
+          index_type = options
+        end
+
+        quoted_column_names = column_names.map { |e| quote_column_name(e) }
+        if Hash === options and options[:lowercase]
+          quoted_column_names = quoted_column_names.map { |e| "LOWER(#{e})" }
+        end
+        quoted_column_names = quoted_column_names.join(", ")
+
+        execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} ON #{quote_table_name(table_name)} USING #{index_method} (#{quoted_column_names})"
+      end
     end
   end
 end
-
-myisam_table = { :id => false, :force => true, :options => "ENGINE=MyIsam" }
-innodb_table = { :id => false, :force => true, :options => "ENGINE=InnoDB" }