在我网站的某些控制器中,我必须编写所有这些sql查询以获得我需要的结果,因为我不认为/知道Laravel Eloquent ORM可以提供非常具体的内容
DB::select('
SELECT users.id,
users.firstname,
users.lastname,
users.slug,
profiles.bio,
profiles.gender,
profiles.verified,
profiles.investor,
profiles.photo,
countries.name AS country,
interests.name AS interests,
specialities.name AS specialities
FROM users
JOIN profiles ON profiles.user_id = users.id
JOIN countries ON profiles.country_id = countries.id
JOIN interests_profiles ON interests_profiles.profile_id = profiles.id
JOIN interests ON interests_profiles.interest_id = interests.id
JOIN profiles_specialities ON profiles_specialities.profile_id = profiles.id
JOIN specialities ON profiles_specialities.speciality_id = specialities.id
');
然而,当我返回此查询的结果时,我得到了一个非常奇怪的结果,其中查询将多次返回每个用户,具体取决于(兴趣和专业)的数量与他的profile.id相关联 与此类似的东西: -
---------------------------------------------------------------------
| users.id | users.firstname | ...etc... | interests | specialities |
---------------------------------------------------------------------
| 8 | Jhon | ...etc... | skydiving | Laravel |
| 8 | Jhon | ...etc... | football | JavaScript |
| 10 | Daved | ...etc... | Chatting | Physics |
| 10 | Daved | ...etc... | Driving | Engineering |
| 11 | Steve | ...etc... | Writing | Woodworks |
---------------------------------------------------------------------
总而言之,我得到的是,查询在用户中循环的次数是他的专长和数量的多倍。与他的个人资料ID相关的兴趣。
请注意,我将个人资料表与兴趣&使用数据透视中间表(interests_profiles和profiles_specialities)的专业表,我只将profile_id和interest_id / speciality_id作为外键。
我不知道是否有任何Laravel Eloquent方法可以完成这项工作,因为我需要根据他们对“WHERE”子句的兴趣过滤我的用户,例如:'WHERE intrests.name = Volleyball'?
如果没有,那么如何让查询只为每个用户运行一次,所以结果可能是这样的: -
[{"users.id": 8, "users.firstname": 'Jhon', ...etc..., "interests":{"skydiving", "football"}, "specialities": {"Laravel", "JavaScript"}}]
然后我可以在视图中循环利益和专业。
我希望我能很好地解释这个问题,并为延长道歉而道歉。
提前谢谢。
答案 0 :(得分:1)
如果您使用的是MySQL,则可以使用GROUP BY
users.id和GROUP_CONCAT
,例如:
SELECT users.id,
users.firstname,
users.lastname,
users.slug,
profiles.bio,
profiles.gender,
profiles.verified,
profiles.investor,
profiles.photo,
countries.name AS country,
GROUP_CONCAT(DISTINCT interests.name) AS interests,
GROUP_CONCAT(DISTINCT specialities.name) AS specialities
FROM users
JOIN profiles ON profiles.user_id = users.id
JOIN countries ON profiles.country_id = countries.id
JOIN interests_profiles ON interests_profiles.profile_id = profiles.id
JOIN interests ON interests_profiles.interest_id = interests.id
JOIN profiles_specialities ON profiles_specialities.profile_id = profiles.id
JOIN specialities ON profiles_specialities.speciality_id = specialities.id
GROUP BY users.id
可能你也可以在Laravels ORM中找到一种方法,因为它看起来像是一个非常灵活的框架。