Kohana ORM: Array to string conversion Error - php

Question

I tried using Kohana/ORM on my localhost xampp and i get the following error
ErrorException [ Notice ]: Array to string conversion
MODPATH\orm\classes\kohana\orm.php [ 980 ]
975 }
976 else
977 {
978 // List columns and mirror for performance
979 $this->_table_columns = $this->list_columns();
980 $this->_table_columns = array_combine($this->_table_columns, $this->_table_columns);
981
982 // Load column cache
983 ORM::$_column_cache[$this->_object_name] = $this->_table_columns;
984 }
985 }
It seems to be a common error appearing in different Frameworks/PHP Applications, but I have not found any clue to fix it.
The Model is just the basic ORM
class Model_Product extends ORM {
}
The Mysql Table (InnoDB - UTF-8) has two fields
id - primary int
name - varchar 50
no voodoo anywhere, help is very appreciated
thanks in advance!
edit: the requested vardump
array(2) {
["id"]=>
array(13) {
["type"]=>
string(3) "int"
["min"]=>
string(11) "-2147483648"
["max"]=>
string(10) "2147483647"
["column_name"]=>
string(2) "id"
["column_default"]=>
NULL
["data_type"]=>
string(3) "int"
["is_nullable"]=>
bool(false)
["ordinal_position"]=>
int(1)
["display"]=>
string(2) "11"
["comment"]=>
string(0) ""
["extra"]=>
string(14) "auto_increment"
["key"]=>
string(3) "PRI"
["privileges"]=>
string(31) "select,insert,update,references"
}
["name"]=>
array(12) {
["type"]=>
string(6) "string"
["column_name"]=>
string(4) "name"
["column_default"]=>
NULL
["data_type"]=>
string(7) "varchar"
["is_nullable"]=>
bool(false)
["ordinal_position"]=>
int(2)
["character_maximum_length"]=>
string(2) "50"
["collation_name"]=>
string(15) "utf8_general_ci"
["comment"]=>
string(0) ""
["extra"]=>
string(0) ""
["key"]=>
string(0) ""
["privileges"]=>
string(31) "select,insert,update,references"
}
}

Answer 1

Line 980:
980 $this->_table_columns = array_combine($this->_table_columns, $this->_table_columns);
looks superfluous taken the previous line 979 into account:
979 $this->_table_columns = $this->list_columns();
Merging two times the same array is useless, especially as the array is this:
array(2) {
["id"]=>
array(13) {
["type"]=>
string(3) "int"
["min"]=>
string(11) "-2147483648"
["max"]=>
string(10) "2147483647"
["column_name"]=>
string(2) "id"
["column_default"]=>
NULL
["data_type"]=>
string(3) "int"
["is_nullable"]=>
bool(false)
["ordinal_position"]=>
int(1)
["display"]=>
string(2) "11"
["comment"]=>
string(0) ""
["extra"]=>
string(14) "auto_increment"
["key"]=>
string(3) "PRI"
["privileges"]=>
string(31) "select,insert,update,references"
}
["name"]=>
array(12) {
["type"]=>
string(6) "string"
["column_name"]=>
string(4) "name"
["column_default"]=>
NULL
["data_type"]=>
string(7) "varchar"
["is_nullable"]=>
bool(false)
["ordinal_position"]=>
int(2)
["character_maximum_length"]=>
string(2) "50"
["collation_name"]=>
string(15) "utf8_general_ci"
["comment"]=>
string(0) ""
["extra"]=>
string(0) ""
["key"]=>
string(0) ""
["privileges"]=>
string(31) "select,insert,update,references"
}
}
It only contains string keys. You should open a bug report with the kohana framework.
Comment line 980 until this get's fixed.

Answer 2

I found a way to resolve this error, just declare the table colums in the model.
protected $_table_columns = array(
'column' => NULL,
'names' => NULL,
'go' => NULL,
'here' => NULL,
......
);
this will ged rid of the problem and increase performance as well.