cakephp join from sorted and limited row - mysql

Question

I have a working SQL query i want to figure out what would be the CakePHP query builder equivalent to work the exact same way?
SELECT customers.*, customer_reps.created FROM customers
LEFT JOIN customer_reps ON customer_reps.id =
(
SELECT id FROM customer_reps WHERE customer_id = customers.id
ORDER BY id ASC LIMIT 1
)
WHERE created >= 1475298000
AND created <= 1476217836
AND agents_id = 4
So essentially i am selecting all columns from "customers" and then i want only the "created" timestamp field of the FIRST "customer_reps" table for matching customer.
Documentation on CakePHP doesn't seem to explain how to do the select within select for sorting as this. I tried using the "hasMany" relational stuff but i was not able to find how to just get the "first" customer_reps entry to add to the main query for use in WHERE clause.
Thanks

Answer 1

try this code as a starting point you just need to group it by CustomerRep.customer_id because the order is already ascending if you're customer_reps table id is auto incremented already
$this->Customer->find('all', array(
'fields' => arrray(
'Customer.*',
'CustomerRep.created'
),
'joins' => array(
array(
'type' => 'LEFT',
'table' => 'customer_reps',
'alias' => 'CustomerRep',
'conditions' => 'Customer.id = CustomerRep.customer_id'
)
)
'conditions' => array(
'Customer.created >=' => '1475298000',
'Customer.created <=' => '1476217836',
'Customer.agentds_id' => 4
),
'group' => 'CustomerRep.customer_id'
));

Answer 2

Are you familiar with cakephp query builder? then if yes you should understand this flow
Step 1: SELECT customers.*, customer_reps.created FROM customers equivalent in cakephp is
$this->Customer->find('all', array(
'fields' => array(
'Customer.*',
'CustomerReply.created'
)
);
Note: CustomerReply.created is from join table of customer_reps which I just alias CustomerReply
Step 2: LEFT JOIN customer_reps ON customer_reps.id =
(
SELECT id FROM customer_reps WHERE customer_id = customers.id
ORDER BY id ASC LIMIT 1
) equivalent in cakephp is
'joins' => array(
array(
'table' => 'customer_reps',
'type' => 'left',
'alias' => 'CustomerReply',
'conditions' => array(
'CustomerReply.id = (SELECT id FROM customer_reps WHERE customer_id = Customer.id ORDER BY id ASC LIMIT 1)'
)
))
Step 3: WHERE created >= 1475298000
AND created <= 1476217836
AND agents_id = 4 equivalent in cakephp is
'conditions' => array(
'Customer.created >=' => 1475298000,
'Customer.created <=' => 1476217836,
'Customer.agents_id' => 4
)
);
so your cakephp query builder would be like this
$query = $this->Customer->find('all', array(
'fields' => array(
'Customer.*',
'CustomerReply.created'
),
'joins' => array(
array(
'table' => 'customer_reps',
'type' => 'left',
'alias' => 'CustomerReply',
'conditions' => array(
'CustomerReply.id = (SELECT id FROM customer_reps WHERE customer_id = Customer.id ORDER BY id ASC LIMIT 1)'
)
)),
'conditions' => array(
'Customer.created >=' => 1475298000,
'Customer.created <=' => 1476217836,
'Customer.agents_id' => 4
)
));