erizye · August 29, 2015 14:06 · Sep 17, 2014
diff --git a/orm.rb b/orm.rb
@@ -0,0 +1,64 @@
+class ORM
+    def save
+        table_name = self.class
+
+        instance_variable_names = self.instance_variables.map do |i|
+            i.slice(1, i.length)
+        end
+
+        instance_variable_values = self.instance_variables.map do |i|
+            self.instance_variable_get("#{i}")
+        end
+
+        if self.id == nil
+            sql_columns = instance_variable_names.join(', ')
+
+            sql_values_arr = []
+            self.instance_variables.each do |i|
+                sql_values_arr << '"' << self.instance_variable_get("#{i}") << '"'
+            end
+            sql_values = sql_values_arr.join(", ")
+
+            sql_command = "INSERT INTO #{table_name}
+                (#{sql_columns})
+                VALUES
+                (#{sql_values})"
+        else
+            components = []
+            instance_variable_names.each do |ivn|
+                value = self.instance_variable_get("@#{ivn}")
+                component = "#{ivn}='#{value}'"
+                components << component
+            end
+            components_string = components.join(', ')
+            query = "UPDATE #{table_name} SET #{components_string}"
+        end
+    end
+end
+
+class User < ORM
+    attr_accessor :id, :name, :email, :phone
+
+    def initialize(name, email, phone, gender, id=nil)
+        @id = id
+        @name = name
+        @email = email
+        @phone = phone
+        @gender = gender
+    end
+
+end
+
+class Dog < ORM
+    attr_accessor :num_legs, :personality_type, :bark_pitch
+end
+
+dog = Dog.new
+dog.num_legs = 3
+dog.personality_type = 'evil'
+dog.bark_pitch = 'high pitched'
+puts dog.save
+
+murat = User.new("murat", "[email protected]", "1234234", "doesnt matter in this day and age")
+puts murat.save
+