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<?php
/**
* PHP grocery CRUD
*
* LICENSE
*
* Grocery CRUD is released with dual licensing, using the GPL v3 (license-gpl3.txt) and the MIT license (license-mit.txt).
* You don't have to do anything special to choose one license or the other and you don't have to notify anyone which license you are using.
* Please see the corresponding license file for details of these licenses.
* You are free to use, modify and distribute this software, but all copyright information must remain.
*
* @package grocery CRUD
* @copyright Copyright (c) 2010 through 2012, John Skoumbourdis
* @license https://github.com/scoumbourdis/grocery-crud/blob/master/license-grocery-crud.txt
* @version 1.2
* @author John Skoumbourdis <scoumbourdisj@gmail.com>
*/
// ------------------------------------------------------------------------
/**
* Grocery CRUD Model
*
*
* @package grocery CRUD
* @author John Skoumbourdis <scoumbourdisj@gmail.com>
* @version 1.2
* @link http://www.grocerycrud.com/documentation
*/
class grocery_CRUD_Model extends CI_Model {
protected $primary_key = null;
protected $table_name = null;
protected $relation = array();
protected $relation_n_n = array();
protected $primary_keys = array();
function __construct()
{
parent::__construct();
}
function db_table_exists($table_name = null)
{
return $this->db->table_exists($table_name);
}
function get_list()
{
if($this->table_name === null)
return false;
$select = "`{$this->table_name}`.*";
//set_relation special queries
if(!empty($this->relation))
{
foreach($this->relation as $relation)
{
list($field_name , $related_table , $related_field_title) = $relation;
$unique_join_name = $this->_unique_join_name($field_name);
$unique_field_name = $this->_unique_field_name($field_name);
if(strstr($related_field_title,'{'))
{
$related_field_title = str_replace(" "," ",$related_field_title);
$select .= ", CONCAT('".str_replace(array('{','}'),array("',COALESCE({$unique_join_name}.",", ''),'"),str_replace("'","\\'",$related_field_title))."') as $unique_field_name";
}
else
{
$select .= ", $unique_join_name.$related_field_title AS $unique_field_name";
}
if($this->field_exists($related_field_title))
$select .= ", `{$this->table_name}`.$related_field_title AS '{$this->table_name}.$related_field_title'";
}
}
//set_relation_n_n special queries. We prefer sub queries from a simple join for the relation_n_n as it is faster and more stable on big tables.
if(!empty($this->relation_n_n))
{
$select = $this->relation_n_n_queries($select);
}
$this->db->select($select, false);
if(CI_VERSION == '2.1.0' || CI_VERSION == '2.1.1')//This hack is only for the release 2.1.1 that it seems that it has lot of bugs. They didn't even change the CI_VERSION to 2.1.1!
{
$results = $this->_hack_for_CI_2_1_1()->data;
}
else
{
$results = $this->db->get($this->table_name)->result();
}
return $results;
}
public function set_primary_key($field_name, $table_name = null)
{
$table_name = $table_name === null ? $this->table_name : $table_name;
$this->primary_keys[$table_name] = $field_name;
}
protected function _hack_for_CI_2_1_1()
{
//Quietly check if the query will be executed or not
$temp_debug_value = $this->db->db_debug;
$this->db->db_debug = false;
$db_result = $this->db->get($this->table_name);
//back to normal
$this->db->db_debug = $temp_debug_value;
/* Don't worry ONLY if the query doesn't execute correctly we will try for a second chance. */
if($db_result === false)
{
/* I got you! Now we will try to execute the query with the normal way and without the bug of the CI */
$query = str_replace("`","",$this->db->last_query());
$results = array();
/**
* Second chance let's execute again the query with the old way as codeigniter add always AUTOMATICALLY grave_accent. There is not another way to deal with this. I know this is an ugly solution but
* I couldn't figure out another solution without changing the core of CI. If anyone has another idea about this it will be appreciated.
*/
$db_query = mysql_query($query) or show_error("<b>Query failed:</b> ".mysql_error()."<br/><b>Actual query:</b> ".$query);
while($result = mysql_fetch_object($db_query) ) {
$results[] = $result;
}
$results = (object)array('data' => $results, 'num_rows' => mysql_num_rows($db_query));
return $results;
}
else
{
return (object)array('data' => $db_result->result(), 'num_rows' => $db_result->num_rows());
}
}
protected function relation_n_n_queries($select)
{
$this_table_primary_key = $this->get_primary_key();
foreach($this->relation_n_n as $relation_n_n)
{
list($field_name, $relation_table, $selection_table, $primary_key_alias_to_this_table,
$primary_key_alias_to_selection_table, $title_field_selection_table, $priority_field_relation_table) = array_values((array)$relation_n_n);
$primary_key_selection_table = $this->get_primary_key($selection_table);
$field = "";
$use_template = strpos($title_field_selection_table,'{') !== false;
$field_name_hash = $this->_unique_field_name($title_field_selection_table);
if($use_template)
{
$title_field_selection_table = str_replace(" ", " ", $title_field_selection_table);
$field .= "CONCAT('".str_replace(array('{','}'),array("',COALESCE(",", ''),'"),str_replace("'","\\'",$title_field_selection_table))."')";
}
else
{
$field .= "$selection_table.$title_field_selection_table";
}
//Sorry Codeigniter but you cannot help me with the subquery!
$select .= ", (SELECT GROUP_CONCAT(DISTINCT $field) FROM $selection_table "
."LEFT JOIN $relation_table ON $relation_table.$primary_key_alias_to_selection_table = $selection_table.$primary_key_selection_table "
."WHERE $relation_table.$primary_key_alias_to_this_table = `{$this->table_name}`.$this_table_primary_key GROUP BY $relation_table.$primary_key_alias_to_this_table) AS $field_name";
}
return $select;
}
function order_by($order_by , $direction)
{
$this->db->order_by( $order_by , $direction );
}
function where($key, $value = NULL, $escape = TRUE)
{
$this->db->where( $key, $value, $escape);
}
function or_where($key, $value = NULL, $escape = TRUE)
{
$this->db->or_where( $key, $value, $escape);
}
function having($key, $value = NULL, $escape = TRUE)
{
$this->db->having( $key, $value, $escape);
}
function or_having($key, $value = NULL, $escape = TRUE)
{
$this->db->or_having( $key, $value, $escape);
}
function like($field, $match = '', $side = 'both')
{
$this->db->like($field, $match, $side);
}
function or_like($field, $match = '', $side = 'both')
{
$this->db->or_like($field, $match, $side);
}
function limit($value, $offset = '')
{
$this->db->limit( $value , $offset );
}
function get_total_results()
{
//set_relation_n_n special queries. We prefer sub queries from a simple join for the relation_n_n as it is faster and more stable on big tables.
if(!empty($this->relation_n_n))
{
$select = "{$this->table_name}.*";
$select = $this->relation_n_n_queries($select);
$this->db->select($select,false);
if(CI_VERSION == '2.1.0' || CI_VERSION == '2.1.1')//This hack is only for the release 2.1.1 that it seems that it has lot of bugs. They didn't even change the CI_VERSION to 2.1.1!
{
return $this->_hack_for_CI_2_1_1()->num_rows;
}
else
{
return $this->db->get($this->table_name)->num_rows();
}
}
else
{
if(CI_VERSION == '2.1.0' || CI_VERSION == '2.1.1')//This hack is only for the release 2.1.1 that it seems that it has lot of bugs. They didn't even change the CI_VERSION to 2.1.1!
{
return $this->_hack_for_CI_2_1_1()->num_rows;
}
else
{
return $this->db->get($this->table_name)->num_rows();
}
}
}
function set_basic_table($table_name = null)
{
if( !($this->db->table_exists($table_name)) )
return false;
$this->table_name = $table_name;
return true;
}
function get_edit_values($primary_key_value)
{
$primary_key_field = $this->get_primary_key();
$this->db->where($primary_key_field,$primary_key_value);
$result = $this->db->get($this->table_name)->row();
return $result;
}
function join_relation($field_name , $related_table , $related_field_title)
{
$related_primary_key = $this->get_primary_key($related_table);
if($related_primary_key !== false)
{
$unique_name = $this->_unique_join_name($field_name);
$this->db->join( $related_table.' as '.$unique_name , "$unique_name.$related_primary_key = {$this->table_name}.$field_name",'left');
$this->relation[$field_name] = array($field_name , $related_table , $related_field_title);
return true;
}
return false;
}
function set_relation_n_n_field($field_info)
{
$this->relation_n_n[$field_info->field_name] = $field_info;
}
protected function _unique_join_name($field_name)
{
return 'j'.substr(md5($field_name),0,8); //This j is because is better for a string to begin with a letter and not with a number
}
protected function _unique_field_name($field_name)
{
return 's'.substr(md5($field_name),0,8); //This s is because is better for a string to begin with a letter and not with a number
}
function get_relation_array($field_name , $related_table , $related_field_title, $where_clause, $order_by, $limit = null, $search_like = null)
{
$relation_array = array();
$field_name_hash = $this->_unique_field_name($field_name);
$related_primary_key = $this->get_primary_key($related_table);
$select = "$related_table.$related_primary_key, ";
if(strstr($related_field_title,'{'))
{
$related_field_title = str_replace(" ", " ", $related_field_title);
$select .= "CONCAT('".str_replace(array('{','}'),array("',COALESCE(",", ''),'"),str_replace("'","\\'",$related_field_title))."') as $field_name_hash";
}
else
{
$select .= "$related_table.$related_field_title as $field_name_hash";
}
$this->db->select($select,false);
if($where_clause !== null)
$this->db->where($where_clause);
if($where_clause !== null)
$this->db->where($where_clause);
if($limit !== null)
$this->db->limit($limit);
if($search_like !== null)
$this->db->having("$field_name_hash LIKE '%".$this->db->escape_like_str($search_like)."%'");
$order_by !== null
? $this->db->order_by($order_by)
: $this->db->order_by($field_name_hash);
$results = $this->db->get($related_table)->result();
foreach($results as $row)
{
$relation_array[$row->$related_primary_key] = $row->$field_name_hash;
}
return $relation_array;
}
function get_ajax_relation_array($search, $field_name , $related_table , $related_field_title, $where_clause, $order_by)
{
return $this->get_relation_array($field_name , $related_table , $related_field_title, $where_clause, $order_by, 10 , $search);
}
function get_relation_total_rows($field_name , $related_table , $related_field_title, $where_clause)
{
if($where_clause !== null)
$this->db->where($where_clause);
return $this->db->get($related_table)->num_rows();
}
function get_relation_n_n_selection_array($primary_key_value, $field_info)
{
$select = "";
$related_field_title = $field_info->title_field_selection_table;
$use_template = strpos($related_field_title,'{') !== false;;
$field_name_hash = $this->_unique_field_name($related_field_title);
if($use_template)
{
$related_field_title = str_replace(" ", " ", $related_field_title);
$select .= "CONCAT('".str_replace(array('{','}'),array("',COALESCE(",", ''),'"),str_replace("'","\\'",$related_field_title))."') as $field_name_hash";
}
else
{
$select .= "$related_field_title as $field_name_hash";
}
$this->db->select('*, '.$select,false);
$selection_primary_key = $this->get_primary_key($field_info->selection_table);
if(empty($field_info->priority_field_relation_table))
{
if(!$use_template){
$this->db->order_by("{$field_info->selection_table}.{$field_info->title_field_selection_table}");
}
}
else
{
$this->db->order_by("{$field_info->relation_table}.{$field_info->priority_field_relation_table}");
}
$this->db->where($field_info->primary_key_alias_to_this_table, $primary_key_value);
$this->db->join(
$field_info->selection_table,
"{$field_info->relation_table}.{$field_info->primary_key_alias_to_selection_table} = {$field_info->selection_table}.{$selection_primary_key}"
);
$results = $this->db->get($field_info->relation_table)->result();
$results_array = array();
foreach($results as $row)
{
$results_array[$row->{$field_info->primary_key_alias_to_selection_table}] = $row->{$field_name_hash};
}
return $results_array;
}
function get_relation_n_n_unselected_array($field_info, $selected_values)
{
$use_where_clause = !empty($field_info->where_clause);
$select = "";
$related_field_title = $field_info->title_field_selection_table;
$use_template = strpos($related_field_title,'{') !== false;
$field_name_hash = $this->_unique_field_name($related_field_title);
if($use_template)
{
$related_field_title = str_replace(" ", " ", $related_field_title);
$select .= "CONCAT('".str_replace(array('{','}'),array("',COALESCE(",", ''),'"),str_replace("'","\\'",$related_field_title))."') as $field_name_hash";
}
else
{
$select .= "$related_field_title as $field_name_hash";
}
$this->db->select('*, '.$select,false);
if($use_where_clause){
$this->db->where($field_info->where_clause);
}
$selection_primary_key = $this->get_primary_key($field_info->selection_table);
if(!$use_template)
$this->db->order_by("{$field_info->selection_table}.{$field_info->title_field_selection_table}");
$results = $this->db->get($field_info->selection_table)->result();
$results_array = array();
foreach($results as $row)
{
if(!isset($selected_values[$row->$selection_primary_key]))
$results_array[$row->$selection_primary_key] = $row->{$field_name_hash};
}
return $results_array;
}
function db_relation_n_n_update($field_info, $post_data ,$main_primary_key)
{
$this->db->where($field_info->primary_key_alias_to_this_table, $main_primary_key);
if(!empty($post_data))
$this->db->where_not_in($field_info->primary_key_alias_to_selection_table , $post_data);
$this->db->delete($field_info->relation_table);
$counter = 0;
if(!empty($post_data))
{
foreach($post_data as $primary_key_value)
{
$where_array = array(
$field_info->primary_key_alias_to_this_table => $main_primary_key,
$field_info->primary_key_alias_to_selection_table => $primary_key_value,
);
$this->db->where($where_array);
$count = $this->db->from($field_info->relation_table)->count_all_results();
if($count == 0)
{
if(!empty($field_info->priority_field_relation_table))
$where_array[$field_info->priority_field_relation_table] = $counter;
$this->db->insert($field_info->relation_table, $where_array);
}elseif($count >= 1 && !empty($field_info->priority_field_relation_table))
{
$this->db->update( $field_info->relation_table, array($field_info->priority_field_relation_table => $counter) , $where_array);
}
$counter++;
}
}
}
function db_relation_n_n_delete($field_info, $main_primary_key)
{
$this->db->where($field_info->primary_key_alias_to_this_table, $main_primary_key);
$this->db->delete($field_info->relation_table);
}
function get_field_types_basic_table()
{
$db_field_types = array();
foreach($this->db->query("SHOW COLUMNS FROM `{$this->table_name}`")->result() as $db_field_type)
{
$type = explode("(",$db_field_type->Type);
$db_type = $type[0];
if(isset($type[1]))
{
$length = substr($type[1],0,-1);
}
else
{
$length = '';
}
$db_field_types[$db_field_type->Field]['db_max_length'] = $length;
$db_field_types[$db_field_type->Field]['db_type'] = $db_type;
$db_field_types[$db_field_type->Field]['db_null'] = $db_field_type->Null == 'YES' ? true : false;
$db_field_types[$db_field_type->Field]['db_extra'] = $db_field_type->Extra;
}
$results = $this->db->field_data($this->table_name);
foreach($results as $num => $row)
{
$row = (array)$row;
$results[$num] = (object)( array_merge($row, $db_field_types[$row['name']]) );
}
return $results;
}
function get_field_types($table_name)
{
$results = $this->db->field_data($table_name);
return $results;
}
function db_update($post_array, $primary_key_value)
{
$primary_key_field = $this->get_primary_key();
return $this->db->update($this->table_name,$post_array, array( $primary_key_field => $primary_key_value));
}
function db_insert($post_array)
{
$insert = $this->db->insert($this->table_name,$post_array);
if($insert)
{
return $this->db->insert_id();
}
return false;
}
function db_delete($primary_key_value)
{
$primary_key_field = $this->get_primary_key();
if($primary_key_field === false)
return false;
$this->db->limit(1);
$this->db->delete($this->table_name,array( $primary_key_field => $primary_key_value));
if( $this->db->affected_rows() != 1)
return false;
else
return true;
}
function db_file_delete($field_name, $filename)
{
if( $this->db->update($this->table_name,array($field_name => ''),array($field_name => $filename)) )
{
return true;
}
else
{
return false;
}
}
function field_exists($field,$table_name = null)
{
if(empty($table_name))
{
$table_name = $this->table_name;
}
return $this->db->field_exists($field,$table_name);
}
function get_primary_key($table_name = null)
{
if($table_name == null)
{
if(isset($this->primary_keys[$this->table_name]))
{
return $this->primary_keys[$this->table_name];
}
if(empty($this->primary_key))
{
$fields = $this->get_field_types_basic_table();
foreach($fields as $field)
{
if($field->primary_key == 1)
{
return $field->name;
}
}
return false;
}
else
{
return $this->primary_key;
}
}
else
{
if(isset($this->primary_keys[$table_name]))
{
return $this->primary_keys[$table_name];
}
$fields = $this->get_field_types($table_name);
foreach($fields as $field)
{
if($field->primary_key == 1)
{
return $field->name;
}
}
return false;
}
}
function escape_str($value)
{
return $this->db->escape_str($value);
}
}
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