【发布时间】：2016-07-12 21:53:59
【问题描述】：
我的 cakephp3 应用运行良好，现在我希望通过关联的表字段对一些查询进行排序。
当按当前模型中的字段排序时，查询工作正常。但是，如果我选择按关联表中的字段Models.field 进行排序，我现在会得到 14 个 sql 查询，而不是一个。但真正的问题是ORDER BY 没有包含在查询中。
我在具有 employee_id 和 course_id 字段的 CoursesEmployees 模型中。
CoursesEmployeesController.php
public function certificate() {
$this->paginate = [
'sortWhitelist' => [
'Employees.surname', 'Courses.name', 'date_completed'
],
'conditions' => ['CoursesEmployees.completed' => true, 'Employees.user_id' => $this->Auth->user('id')],
'contain' => ['Employees', 'Courses'],
'order' => ['Employees.name'=>'asc']
];
$this->set('coursesEmployees', $this->paginate($this->CoursesEmployees));
}
如果我通过'order' => ['date_created'=>'asc'] 订购，我会收到一个查询，一切正常。
SELECT
CoursesEmployees.id AS `CoursesEmployees__id`,
CoursesEmployees.employee_id AS `CoursesEmployees__employee_id`,
CoursesEmployees.course_id AS `CoursesEmployees__course_id`,
CoursesEmployees.course_module_id AS `CoursesEmployees__course_module_id`,
CoursesEmployees.cid AS `CoursesEmployees__cid`,
CoursesEmployees.progress AS `CoursesEmployees__progress`,
CoursesEmployees.modified AS `CoursesEmployees__modified`,
CoursesEmployees.created AS `CoursesEmployees__created`,
CoursesEmployees.completed AS `CoursesEmployees__completed`,
CoursesEmployees.date_completed AS `CoursesEmployees__date_completed`,
Employees.id AS `Employees__id`,
Employees.user_id AS `Employees__user_id`,
Employees.hotel_id AS `Employees__hotel_id`,
Employees.name AS `Employees__name`,
Employees.email AS `Employees__email`,
Employees.surname AS `Employees__surname`,
Employees.employee_num AS `Employees__employee_num`,
Employees.modified AS `Employees__modified`,
Employees.created AS `Employees__created`,
Courses.id AS `Courses__id`,
Courses.name AS `Courses__name`,
Courses.course_lenght AS `Courses__course_lenght`
FROM
courses_employees CoursesEmployees
INNER JOIN
employees Employees
ON Employees.id = (
CoursesEmployees.employee_id
)
INNER JOIN
courses Courses
ON Courses.id = (
CoursesEmployees.course_id
)
WHERE
(
CoursesEmployees.completed = 1
AND Employees.user_id = '1'
)
ORDER BY
CoursesEmployees.date_completed asc LIMIT 20 OFFSET 0
如果我'order' => ['Employees.name'=>'asc']（或字段名称的任何随机文本）我会得到 14 个 sql 查询，而主查询最后没有应有的顺序。
SHOW FULL COLUMNS FROM `courses_employees` 10 1
SHOW INDEXES FROM `courses_employees` 1 0
SELECT * FROM information_schema.key_column_usage AS kcu INNER JOIN information_schema.referential_constraints AS rc ON (kcu.CONSTRAINT_NAME = rc.CONSTRAINT_NAME) WHERE kcu.TABLE_SCHEMA = 'deep_mind' AND kcu.TABLE_NAME = 'courses_employees' and rc.TABLE_NAME = 'courses_employees' 0 0
SHOW TABLE STATUS WHERE Name = 'courses_employees' 1 0
SHOW FULL COLUMNS FROM `employees` 9 1
SHOW INDEXES FROM `employees` 1 0
SELECT * FROM information_schema.key_column_usage AS kcu INNER JOIN information_schema.referential_constraints AS rc ON (kcu.CONSTRAINT_NAME = rc.CONSTRAINT_NAME) WHERE kcu.TABLE_SCHEMA = 'deep_mind' AND kcu.TABLE_NAME = 'employees' and rc.TABLE_NAME = 'employees' 0 0
SHOW TABLE STATUS WHERE Name = 'employees' 1 0
SHOW FULL COLUMNS FROM `courses` 3 1
SHOW INDEXES FROM `courses` 1 0
SELECT * FROM information_schema.key_column_usage AS kcu INNER JOIN information_schema.referential_constraints AS rc ON (kcu.CONSTRAINT_NAME = rc.CONSTRAINT_NAME) WHERE kcu.TABLE_SCHEMA = 'deep_mind' AND kcu.TABLE_NAME = 'courses' and rc.TABLE_NAME = 'courses' 0 0
SHOW TABLE STATUS WHERE Name = 'courses' 1 0
SELECT
CoursesEmployees.id AS `CoursesEmployees__id`,
CoursesEmployees.employee_id AS `CoursesEmployees__employee_id`,
CoursesEmployees.course_id AS `CoursesEmployees__course_id`,
CoursesEmployees.course_module_id AS `CoursesEmployees__course_module_id`,
CoursesEmployees.cid AS `CoursesEmployees__cid`,
CoursesEmployees.progress AS `CoursesEmployees__progress`,
CoursesEmployees.modified AS `CoursesEmployees__modified`,
CoursesEmployees.created AS `CoursesEmployees__created`,
CoursesEmployees.completed AS `CoursesEmployees__completed`,
CoursesEmployees.date_completed AS `CoursesEmployees__date_completed`,
Employees.id AS `Employees__id`,
Employees.user_id AS `Employees__user_id`,
Employees.hotel_id AS `Employees__hotel_id`,
Employees.name AS `Employees__name`,
Employees.email AS `Employees__email`,
Employees.surname AS `Employees__surname`,
Employees.employee_num AS `Employees__employee_num`,
Employees.modified AS `Employees__modified`,
Employees.created AS `Employees__created`,
Courses.id AS `Courses__id`,
Courses.name AS `Courses__name`,
Courses.course_lenght AS `Courses__course_lenght`
FROM
courses_employees CoursesEmployees
INNER JOIN
employees Employees
ON Employees.id = (
CoursesEmployees.employee_id
)
INNER JOIN
courses Courses
ON Courses.id = (
CoursesEmployees.course_id
)
WHERE
(
CoursesEmployees.completed = 1
AND Employees.user_id = '1'
) LIMIT 20 OFFSET 0
【问题讨论】：
-
额外的查询与您的 order-by 问题无关。
(or any random text for the field name- 这听起来像是白名单的原因 - 这是modified recently。请清理问题以专注于“问题”并澄清它是特定于分页的，问题的标题和正文目前颇具误导性。
标签： cakephp cakephp-3.0