CakePHP GroupBy displaying all rows in a structured format - php

Question

Following is the Banking MySQL table structure:
id | name | type
1 | abc | xyz
2 | jkl | xyz
3 | efg | pql
Right now the records are displayed in the following format:
Array
(
[0] => Array
(
[Banking] => Array
(
[id] => 1
[name] => abc
[type] => xyz
)
)
[1] => Array
(
[Banking] => Array
(
[id] => 2
[name] => jkl
[type] => xyz
)
)
[2] => Array
(
[Banking] => Array
(
[id] => 3
[name] => efg
[type] => pql
)
)
)
I need to GroupBy fields according to type field and display all records. Following is the desired structure:
Array
(
[xyz] => Array
(
[0] => Array
(
[id] => 1
[name] => abc
)
[1] => Array
(
[id] => 2
[name] => jkl
)
)
[pql] => Array
(
[0] => Array
(
[id] => 2
[name] => efg
[type] => xyz
)
)
)
I tried Grouping it the following way but didn't work since GroupBy shows only one record per type.
$bankList = $this -> Banking -> find('all', array(
'order' => 'Banking.name asc',
'fields' => array(
'Banking.id',
'Banking.name',
'Banking.type'
),
'group' => array('Banking.type')
));
Though I achieved the result customizing $bankList:
foreach ($bankList as $b) {
if (!in_array($b['Banking']['type'], $type)) {
$type[] = $b['Banking']['type'];
}
$bList[$b['Banking']['type']][] = array(
'name' => $b['Banking']['name'],
'id' => $b['Banking']['id']
);
}
but wondering if its possible with a Query only?

Answer 1

I tried Grouping it the following way but didn't work since GroupBy
shows only one record per type.
You might want to learn SQL first, because this is the expected behaviour of GROUP BY, see What does group by do exactly ?
The resulting array structure you get is the standard CakePHP structure and has nothing at all to do with the SQL itself. It is just how CakePHP formats them.
Use the Model::afterFind() callback to modify the result as you need. Create a new method like transformResult() and pass your data through it in afterFind().

Answer 2

You can achieve the desired structure by manipulating data after you fetched it from a database. In CakePHP you can use a groupBy method:
$bankList = $this -> Banking -> find('all', array(
'order' => 'Banking.name asc',
'fields' => array(
'Banking.id',
'Banking.name',
'Banking.type'
)
)) -> groupBy('type');
Please note, that it has nothing to do with SQL queries! It is just a convenient way to do same data restructuring as your code.