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我在Symfony2中的工作實現與以下模型的原則。 從繼承和關聯場景的主義查詢問題
- 父母可以申請一個/多個培訓(S)
- 培訓是基於特定的技能,但是你可以在不同的日期爲同一技能培訓多。
- 一旦家長參加培訓,他可以被標記爲與所培訓的技能相關的「合格」,併成爲實習生。
- 家長可以參加在同一技能的多個培訓,但對於給定的技能將只標有「資格」只有一次
- 許多型動物技能
的繼承和協會培訓生可以「合格」
Parents\ParentsBundle\Entity\Parents:
type: entity
inheritanceType: SINGLE_TABLE
discriminatorColumn:
name: type
type: string
discriminatorMap:
parents: Parents
trainee: Parents\TraineeBundle\Entity\Trainee
table: Parents
repositoryClass: Parents\ParentsBundle\Repository\ParentsRepository
id:
id:
type: integer
generator:
strategy: AUTO
fields:
firstname:
type: string
length: 250
lastname:
type: string
length: 250
dob:
type: date
nullable: true
lifecycleCallbacks:
prePersist: [ setDateDeCreationValue ]
manyToMany:
trainings:
targetEntity: Training\TrainingBundle\Entity\Training
mappedBy: parents
orphanRemoval: true
cascade: ["all"]
oneToOne:
trainee:
targetEntity: Parents\TraineeBundle\Entity\Trainee
inversedBy: parents
cascade: ["all"]
joinColumns:
trainee_id:
referencedColumnName: id
indexes:
nom_prenoms_idx:
columns: [ firstname, lastname ]
Parents\TraineeBundle\Entity\Trainee:
type: entity
extends: Parents\ParentsBundle\Entity\Parents
repositoryClass: Parents\TraineeBundle\Repository\TraineeRepository
manyToMany:
skills:
targetEntity: Training\SkillBundle\Entity\Skill
mappedBy: trainees
oneToOne:
parents:
targetEntity: Parents\ParentsBundle\Entity\Parents
mappedBy: trainee
Trianing\SkillBundle\Entity\Skill:
type: entity
table: Skill
repositoryClass: Training\SkillBundle\Repository\SkillRepository
id:
id:
type: integer
generator:
strategy: auto
fields:
title:
type: string
length: 80
unique: true
description:
type: string
length: 250
nullable: true
manyToMany:
trainees:
targetEntity: Parents\TraineeBundle\Entity\Trainee
inversedBy: skills
cascade: ["all"]
joinTable:
name: trainess_skills
joinColumns:
skill_id:
referencedColumnName: id
nullable: false
onDelete: CASCADE
inverseJoinColumns:
trainee_id:
referencedColumnName: id
nullable: false
uniqueConstraints:
titre_UNIQUE:
columns:
- titre
但是,即時通訊尋求家長的列表中排除要在技能從培訓「合格」:家長和見習之間(一對一),如下圖所示一直使用單表繼承中實現這些人是:
- 對技能的所有準備見習
我有下面的SQL查詢這使我得到預期的結果,但我不能有,因爲關聯鏈接在教義工作一個到實體。 SQL查詢
SELECT p.*
FROM Parents p
LEFT JOIN training_formations tf
ON p.id = tf.parents_id
LEFT JOIN Training t
ON tf.training_id = t.id
LEFT JOIN Parents trainee
ON p.intervenant_id = trainee.id
LEFT JOIN trainees_skills ts
ON trainee.id = ts.trainee_id
WHERE [email protected] and (t.skill_id <> ts.skill_id or p.trainee_id is null);
教義查詢:
$qb = $this->createQueryBuilder('p');
$qb->select('p')
->leftJoin('p.trainings', 't')
->leftJoin('p.trainee','tr')
->leftJoin('tr.skill','s')
->where('t.id = :trainingId')
->andWhere($qb->expr()->orX(
$qb->expr()->neq('t.skill','tr.skill'),
$qb->expr()->isNull('p.trainee')
)
)
->setParameter('trainingId', $trainingId)
->orderBy('p.firstname', 'ASC');
return $qb;
結果查詢拋出一個PathExpression錯誤,我很想通過使用「IDENTITY()方法的外鍵正確的,但UT做不行。
我錯過了什麼,或者是否有過一些事情嗎?