Tuesday, January 13, 2015
Hi,
my app is on Ruby 2.1.2 and Rails 4.1.5
like the subject states I would expect
current_user.account.employees.includes(:entrances).where( 'entrances.clocked_at' => @month_range)
to return all employees (to this current_user's account) - and any entrances
But I'm left with the employees that has entrances in the month_range
[
that looks like this:
SELECT `employees`.`id` AS t0_r0, `employees`.`name` AS t0_r1, `employees`.`last_seen` AS t0_r2, `employees`.`created_at` AS t0_r3, `employees`.`updated_at` AS t0_r4, `employees`.`punch_clock_id` AS t0_r5, `employees`.`account_id` AS t0_r6, `employees`.`born_at` AS t0_r7, `entrances`.`id` AS t1_r0, `entrances`.`employee_id` AS t1_r1, `entrances`.`clocked_at` AS t1_r2, `entrances`.`created_at` AS t1_r3, `entrances`.`updated_at` AS t1_r4, `entrances`.`entrance_type` AS t1_r5 FROM `employees` LEFT OUTER JOIN `entrances` ON `entrances`.`employee_id` = `employees`.`id` WHERE `employees`.`account_id` = 2 AND (`entrances`.`clocked_at` BETWEEN '2015-01-01' AND '2015-01-31') ORDER BY employees.id, entrances.clocked_at
]
If, however, I settle for
current_user.account.employees.includes(:entrances)
I get all employees but than I get all the entrances loaded into memory as well
[
that looks like:
Employee Load (0.2ms) SELECT `employees`.* FROM `employees` WHERE `employees`.`account_id` = 2Entrance Load (0.2ms) SELECT `entrances`.* FROM `entrances` WHERE `entrances`.`employee_id` IN (1, 2)Entrance Load (0.3ms) SELECT `entrances`.* FROM `entrances` WHERE `entrances`.`employee_id` = 1 AND (`entrances`.`clocked_at` BETWEEN '2015-01-01' AND '2015-01-31')Entrance Load (0.4ms) SELECT `entrances`.* FROM `entrances` WHERE `entrances`.`employee_id` = 2 AND (`entrances`.`clocked_at` BETWEEN '2015-01-01' AND '2015-01-31')
]
The correct statement is
SELECT
`employees`.`id` AS t0_r0, `employees`.`name` AS t0_r1, `employees`.`last_seen` AS t0_r2, `employees`.`created_at` AS t0_r3, `employees`.`updated_at` AS t0_r4, `employees`.`punch_clock_id` AS t0_r5, `employees`.`account_id` AS t0_r6, `employees`.`born_at` AS t0_r7, `entrances`.`id` AS t1_r0, `entrances`.`employee_id` AS t1_r1, `entrances`.`clocked_at` AS t1_r2, `entrances`.`created_at` AS t1_r3, `entrances`.`updated_at` AS t1_r4, `entrances`.`entrance_type` AS t1_r5
FROM
`employees`
LEFT OUTER JOIN
`entrances` ON `entrances`.`employee_id` = `employees`.`id` AND (`entrances`.`clocked_at` BETWEEN '2015-01-01' AND '2015-01-31')
WHERE
`employees`.`account_id` = 2
but how do I write that "the Rails way"
cheers
Walther
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