added count calculation

Author: craigphares

README.md

@@ -101,6 +101,15 @@ foreach ($project->todos as $project_todo)
 }
 ```
 
+Calculations
+------------
+
+See how many records are in your model's table.
+
+```php
+$this->todo_model->count();
+```
+
 Callbacks/Observers
 -------------------
 

core/MY_Model.php

@@ -274,6 +274,12 @@ public function order($criteria, $order_by = 'ASC')
 		return $this;
 	}
 
+	/**
+	 * Limit the number of records to return.
+	 * 
+	 * @param int $limit
+	 * @return MY_Model
+	 */
 	public function limit($limit)
 	{
 		$this->limit_value = $limit;
@@ -284,6 +290,12 @@ public function limit($limit)
 		return $this;	
 	}
 
+	/**
+	 * Skip a number of records.
+	 * 
+	 * @param int $offset
+	 * @return MY_Model
+	 */
 	public function offset($offset)
 	{
 		$this->offset_value = $offset;
@@ -309,6 +321,16 @@ public function includes($relationship)
 		}		
 		return $this;		
 	}
+	
+	/**
+	 * Count the records in a table.
+	 * 
+	 * @return int
+	 */
+	public function count()
+	{
+		return $this->connection->count_all_results($this->table_name);
+	}
 
 	/**
 	 * Trigger a callback and call its observers.