Laravel 如何通过 pivot 获取相关字段列表 table
Laravel how to get list of related fields through pivot table
我有 4 个 tables:人民、公司、国家和支点 table company_people(因为人民和公司都属于许多)people_id 和 company_id.
在People模型中,我有以下功能:
class People extends Model
{
// main company (only one)
public function company()
{
return $this->belongsTo(Company::class);
}
// all other companies
public function companies()
{
return $this->belongsToMany(Company::class);
}
public function country()
{
return $this->belongsTo(Country::class);
}
}
然后在人员控制器中,我有以下内容以准备显示所有人员的列表以及相关的主要公司名称(只有一个)、国家名称(只有一个)和其他公司作为列表的名字。我可以做前两个但不能做最后一个。我该怎么做?
$peoples = People::orderBy($sortField,$sortOrder)
->with(['companies','company','country'])
->get();
foreach ($peoples as $people) {
$people->company = '['.$people->company->company.']'; // main company name
$people->country = '['.$people->country->country.']'; // country name
$people->otherCompanies = ? // list of other company names through pivot table
}
这里是 4 table 的所有结构:
CREATE TABLE `company_people` (
`id` bigint NOT NULL,
`created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`company_id` bigint UNSIGNED NOT NULL,
`people_id` bigint UNSIGNED NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
CREATE TABLE `countries` (
`id` varchar(4) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT 'AA',
`created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`is_active` int NOT NULL DEFAULT '1',
`country` varchar(60) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
CREATE TABLE `peoples` (
`id` bigint UNSIGNED NOT NULL,
`created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`is_active` int NOT NULL DEFAULT '1',
`firstname` varchar(120) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
`lastname` varchar(120) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT '',
`country_id` varchar(4) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT 'ZA',
`company_id` bigint UNSIGNED DEFAULT '0'
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci PACK_KEYS=0;
ALTER TABLE `company_people`
ADD PRIMARY KEY (`id`),
ADD KEY `article_id` (`company_id`),
ADD KEY `tag_id` (`people_id`);
ALTER TABLE `countries`
ADD PRIMARY KEY (`id`);
ALTER TABLE `peoples`
ADD PRIMARY KEY (`id`),
ADD KEY `country_id` (`country_id`),
ADD KEY `company_id` (`company_id`);
ALTER TABLE `company_people`
MODIFY `id` bigint NOT NULL AUTO_INCREMENT;
ALTER TABLE `peoples`
MODIFY `id` bigint UNSIGNED NOT NULL AUTO_INCREMENT;
ALTER TABLE `peoples`
ADD CONSTRAINT `peoples-company` FOREIGN KEY (`company_id`) REFERENCES `companies` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
ADD CONSTRAINT `peoples-country` FOREIGN KEY (`country_id`) REFERENCES `countries` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT;
ALTER TABLE `companies`
ADD CONSTRAINT `peoples-country` FOREIGN KEY (`country_id`) REFERENCES `countries` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT;
ALTER TABLE `company_people`
ADD CONSTRAINT `companies-peoples` FOREIGN KEY (`company_id`) REFERENCES `companies` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
ADD CONSTRAINT `peoples-companies` FOREIGN KEY (`people_id`) REFERENCES `peoples` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
你可以使用 pluck() to get all the company name then toArray() 像这样在数组中转换
$peoples = People::orderBy($sortField,$sortOrder)
->with(['companies','company','country'])
->get();
foreach ($peoples as $people) {
$people->company = '['.$people->company->company.']'; // main company name
$people->country = '['.$people->country->country.']'; // country name
$people->otherCompanies = $people->companies->pluck('name')->toArray(); // list of other company names through pivot table
}
And if you want otherCompanies
name as comma seprate then use $people->companies->pluck('name')->join(',');
我有 4 个 tables:人民、公司、国家和支点 table company_people(因为人民和公司都属于许多)people_id 和 company_id.
在People模型中,我有以下功能:
class People extends Model
{
// main company (only one)
public function company()
{
return $this->belongsTo(Company::class);
}
// all other companies
public function companies()
{
return $this->belongsToMany(Company::class);
}
public function country()
{
return $this->belongsTo(Country::class);
}
}
然后在人员控制器中,我有以下内容以准备显示所有人员的列表以及相关的主要公司名称(只有一个)、国家名称(只有一个)和其他公司作为列表的名字。我可以做前两个但不能做最后一个。我该怎么做?
$peoples = People::orderBy($sortField,$sortOrder)
->with(['companies','company','country'])
->get();
foreach ($peoples as $people) {
$people->company = '['.$people->company->company.']'; // main company name
$people->country = '['.$people->country->country.']'; // country name
$people->otherCompanies = ? // list of other company names through pivot table
}
这里是 4 table 的所有结构:
CREATE TABLE `company_people` (
`id` bigint NOT NULL,
`created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`company_id` bigint UNSIGNED NOT NULL,
`people_id` bigint UNSIGNED NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
CREATE TABLE `countries` (
`id` varchar(4) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT 'AA',
`created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`is_active` int NOT NULL DEFAULT '1',
`country` varchar(60) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
CREATE TABLE `peoples` (
`id` bigint UNSIGNED NOT NULL,
`created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`is_active` int NOT NULL DEFAULT '1',
`firstname` varchar(120) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT '',
`lastname` varchar(120) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci DEFAULT '',
`country_id` varchar(4) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL DEFAULT 'ZA',
`company_id` bigint UNSIGNED DEFAULT '0'
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci PACK_KEYS=0;
ALTER TABLE `company_people`
ADD PRIMARY KEY (`id`),
ADD KEY `article_id` (`company_id`),
ADD KEY `tag_id` (`people_id`);
ALTER TABLE `countries`
ADD PRIMARY KEY (`id`);
ALTER TABLE `peoples`
ADD PRIMARY KEY (`id`),
ADD KEY `country_id` (`country_id`),
ADD KEY `company_id` (`company_id`);
ALTER TABLE `company_people`
MODIFY `id` bigint NOT NULL AUTO_INCREMENT;
ALTER TABLE `peoples`
MODIFY `id` bigint UNSIGNED NOT NULL AUTO_INCREMENT;
ALTER TABLE `peoples`
ADD CONSTRAINT `peoples-company` FOREIGN KEY (`company_id`) REFERENCES `companies` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
ADD CONSTRAINT `peoples-country` FOREIGN KEY (`country_id`) REFERENCES `countries` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT;
ALTER TABLE `companies`
ADD CONSTRAINT `peoples-country` FOREIGN KEY (`country_id`) REFERENCES `countries` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT;
ALTER TABLE `company_people`
ADD CONSTRAINT `companies-peoples` FOREIGN KEY (`company_id`) REFERENCES `companies` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
ADD CONSTRAINT `peoples-companies` FOREIGN KEY (`people_id`) REFERENCES `peoples` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
你可以使用 pluck() to get all the company name then toArray() 像这样在数组中转换
$peoples = People::orderBy($sortField,$sortOrder)
->with(['companies','company','country'])
->get();
foreach ($peoples as $people) {
$people->company = '['.$people->company->company.']'; // main company name
$people->country = '['.$people->country->country.']'; // country name
$people->otherCompanies = $people->companies->pluck('name')->toArray(); // list of other company names through pivot table
}
And if you want
otherCompanies
name as comma seprate then use$people->companies->pluck('name')->join(',');