584 lines
16 KiB
PHP
584 lines
16 KiB
PHP
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<?php
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namespace app\mzl\common\utils;
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use Illuminate\Database\Eloquent\Builder;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Pagination\LengthAwarePaginator;
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use Illuminate\Support\Collection;
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/**
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* 通用查询构建器 SimpleQueryBuilder
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*/
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class SimpleQueryBuilder
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{
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protected ?Model $model = null;
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protected ?Builder $query = null;
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protected array $filters = [];
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protected array $sorts = [];
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protected array $fields = [];
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protected array $relations = [];
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protected array $hasRelations = [];
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protected array $pagination = [
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'page' => 1,
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'per_page' => 10,
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];
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/** @var string[] 要执行 withCount 的关联 */
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protected array $counts = [];
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public array $allowedFields = [];
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protected ?\Closure $customQueryCallback = null;
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public function __construct(?Model $model = null)
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{
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if ($model) {
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$this->setModel($model);
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}
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}
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/**
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* 设置模型
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*/
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public function setModel(Model $model): self
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{
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$this->model = $model;
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$this->query = $model->newQuery();
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return $this;
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}
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/**
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* 批量应用查询配置
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*
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* @param array $config
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* @return $this
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*/
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public function applyQueryConfig(array $config): self
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{
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foreach ($config['filters'] ?? [] as $filter) {
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$this->addFilter($filter['field'], $filter['operator'], $filter['value']);
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}
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foreach ($config['sorts'] ?? [] as $sort) {
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$this->addSort($sort['field'], $sort['direction'] ?? 'asc');
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}
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if (!empty($config['fields'])) {
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$this->selectFields($config['fields']);
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}
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foreach ($config['relations'] ?? [] as $relation => $fields) {
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$this->withRelation($relation, $fields);
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}
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foreach ($config['hasRelations'] ?? [] as $relation => $callback) {
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if ($callback instanceof \Closure) {
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$this->addHasRelation($relation, $callback);
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}
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}
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// 新增：处理 counts
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foreach ($config['counts'] ?? [] as $relation) {
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$this->addCount($relation);
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}
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if (!empty($config['pagination'])) {
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$this->setPagination(
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$config['pagination']['page'] ?? 1,
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$config['pagination']['per_page'] ?? 15
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);
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}
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if (!empty($config['custom']) && $config['custom'] instanceof \Closure) {
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$this->withCustomQuery($config['custom']);
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}
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return $this;
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}
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/**
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* 添加单个过滤条件
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*/
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public function addFilter(string $field, string $operator, mixed $value): self
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{
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$this->filters[] = compact('field', 'operator', 'value');
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return $this;
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}
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/**
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* 添加排序字段
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*/
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public function addSort(string $field, string $direction = 'asc'): self
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{
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$this->sorts[$field] = strtolower($direction) === 'desc' ? 'desc' : 'asc';
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return $this;
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}
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/**
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* 设置查询字段（select），可配合 allowedFields 校验
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*/
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public function selectFields(array $fields): self
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{
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$this->fields = array_unique($fields);
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return $this;
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}
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/**
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* 加载关联（支持指定字段）
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*/
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public function withRelation2(string $relation, array $fields = []): self
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{
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$this->relations[$relation] = !empty($fields) ? $fields : '*';
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return $this;
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}
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/**
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* 加载关联（支持指定字段 或 自定义闭包）
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*
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* @param string $relation 关联名，支持点式多级
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* @param array|\Closure $fields 字段数组 或 查询闭包
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*/
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public function withRelation(string $relation, $fields = []): self
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{
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if ($fields instanceof \Closure) {
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// 自定义关联查询闭包
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$this->relations[$relation] = $fields;
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} else {
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// 字段选择，空数组表示全部
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$this->relations[$relation] = !empty($fields) ? $fields : '*';
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}
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return $this;
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}
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/**
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* 添加 whereHas 条件
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*/
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public function addHasRelation(string $relation, \Closure $callback): self
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{
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$this->hasRelations[] = compact('relation', 'callback');
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return $this;
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}
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/**
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* 设置分页
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*/
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public function setPagination(int $page, int $perPage): self
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{
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$this->pagination = [
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'page' => max(1, $page),
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'per_page' => min(max(1, $perPage), 100),
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];
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return $this;
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}
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/**
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* 注入复杂查询闭包（适合业务层扩展）
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*/
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public function withCustomQuery(\Closure $callback): self
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{
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$this->customQueryCallback = $callback;
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return $this;
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}
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/**
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* 添加关联数量统计 (withCount)
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*
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* @param string $relation 关联名，支持点式多层，如 "orders.items"
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* @return $this
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*/
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public function addCount(string $relation): self
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{
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$this->counts[] = $relation;
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return $this;
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}
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/**
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* 构建完整查询（不执行）
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*/
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public function build(): Builder
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{
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if (!$this->query && $this->model) {
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$this->query = $this->model->newQuery();
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}
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$this->applyFilters()
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->applySorts()
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->applyFields()
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->applyRelations()
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->applyWhereHas();
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// ========== 新增：关联计数 ==========
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if (!empty($this->counts)) {
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// Laravel 支持 withCount(['rel1','rel2'])
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$this->query->withCount($this->counts);
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}
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if ($this->customQueryCallback) {
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call_user_func($this->customQueryCallback, $this->query);
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}
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return $this->query;
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}
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/**
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* 获取集合（不分页）
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*/
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public function get(): Collection
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{
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return $this->build()->get();
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}
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/**
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* 获取分页结果
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*/
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public function paginate(): LengthAwarePaginator
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{
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return $this->build()->paginate(
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$this->pagination['per_page'],
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['*'],
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'page',
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$this->pagination['page']
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);
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}
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/**
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* 应用过滤
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*/
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protected function applyFilters(): self
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{
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foreach ($this->filters as $filter) {
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$field = $filter['field'];
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$operator = $filter['operator'];
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$value = $filter['value'];
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if (str_contains($field, '.')) {
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$segments = explode('.', $field);
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$relationPath = implode('.', array_slice($segments, 0, -1));
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$lastField = end($segments);
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$this->query->whereHas($relationPath, function (Builder $q) use ($lastField, $operator, $value) {
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$this->applyCondition($q, $lastField, $operator, $value);
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});
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} else {
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$this->applyCondition($this->query, $field, $operator, $value);
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}
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}
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return $this;
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}
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/**
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* 应用排序
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*/
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protected function applySorts(): self
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{
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foreach ($this->sorts as $field => $direction) {
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$this->query->orderBy($field, $direction);
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}
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return $this;
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}
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/**
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* 应用字段选择
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*/
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// protected function applyFields2(): self
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// {
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// if (!empty($this->fields)) {
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// // 排除关联字段（如 class.teacher.realname）
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// $fields = array_filter($this->fields, fn($field) => !str_contains($field, '.'));
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// // 白名单过滤
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// $fields = !empty($this->allowedFields)
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// ? array_intersect($fields, $this->allowedFields)
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// : $fields;
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// if (empty($fields)) {
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// throw new \InvalidArgumentException('字段选择无效');
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// }
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// $this->query->select(array_unique($fields));
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// }
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// return $this;
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// }
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/**
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* 应用字段选择，支持普通列和带 alias 的 Raw 表达式
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*/
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protected function applyFields(): self
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{
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if (empty($this->fields)) {
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return $this;
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}
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// 只保留主表字段（排除带点的关联字段）
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$cols = array_filter($this->fields, fn($f) => ! str_contains($f, '.'));
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|
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// 如果设置了 allowedFields，做一次白名单交集
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if (! empty($this->allowedFields)) {
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$cols = array_intersect($cols, $this->allowedFields);
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}
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if (empty($cols)) {
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throw new \InvalidArgumentException('字段选择无效');
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}
|
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|
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$plain = [];
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$raws = [];
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|
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foreach ($cols as $col) {
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// 简单判断带 “ as ” 的就归到 Raw
|
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if (preg_match('/\s+as\s+/i', $col)) {
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$raws[] = $col;
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} else {
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$plain[] = $col;
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}
|
|||
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}
|
|||
|
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|
|||
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// 先 select 普通列
|
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if ($plain) {
|
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$this->query->select($plain);
|
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}
|
|||
|
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// 再 selectRaw alias
|
|||
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if ($raws) {
|
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|
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// 注意：selectRaw 接受一整个字符串
|
|||
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$this->query->selectRaw(implode(', ', $raws));
|
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}
|
|||
|
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|
|||
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return $this;
|
|||
|
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}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 应用关联加载，支持 dot-notation 多级关联
|
|||
|
|
*/
|
|||
|
|
// protected function applyRelations2(): self
|
|||
|
|
// {
|
|||
|
|
// if (empty($this->relations)) {
|
|||
|
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// return $this;
|
|||
|
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// }
|
|||
|
|
|
|||
|
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// $with = [];
|
|||
|
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// foreach ($this->relations as $path => $fields) {
|
|||
|
|
// $with[$path] = function ($q) use ($fields) {
|
|||
|
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// if ($fields === '*' || empty($fields)) {
|
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|
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// return;
|
|||
|
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// }
|
|||
|
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// // 保证 id 在内
|
|||
|
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// $model = $q->getModel();
|
|||
|
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// $key = $model->getKeyName();
|
|||
|
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// $q->select(array_merge([$key], $fields));
|
|||
|
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// };
|
|||
|
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// }
|
|||
|
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|
|||
|
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// $this->query->with($with);
|
|||
|
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|
|||
|
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// return $this;
|
|||
|
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// }
|
|||
|
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|
|||
|
|
/**
|
|||
|
|
* 应用多级关联加载，支持给关联字段加 alias
|
|||
|
|
*/
|
|||
|
|
protected function applyRelations2(): self
|
|||
|
|
{
|
|||
|
|
if (empty($this->relations)) {
|
|||
|
|
return $this;
|
|||
|
|
}
|
|||
|
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|
|||
|
|
$with = [];
|
|||
|
|
foreach ($this->relations as $path => $fields) {
|
|||
|
|
$with[$path] = function ($q) use ($fields) {
|
|||
|
|
if ($fields === '*' || empty($fields)) {
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 模型主键一定要带上
|
|||
|
|
$model = $q->getModel();
|
|||
|
|
$key = $model->getKeyName();
|
|||
|
|
|
|||
|
|
$plain = [];
|
|||
|
|
$raws = [];
|
|||
|
|
|
|||
|
|
foreach ($fields as $col) {
|
|||
|
|
if (preg_match('/\s+as\s+/i', $col)) {
|
|||
|
|
$raws[] = $col;
|
|||
|
|
} else {
|
|||
|
|
$plain[] = $col;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 确保主键至少出现一次
|
|||
|
|
if (! in_array($key, $plain, true)) {
|
|||
|
|
array_unshift($plain, $key);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// select 普通列
|
|||
|
|
if ($plain) {
|
|||
|
|
$q->select($plain);
|
|||
|
|
}
|
|||
|
|
// selectRaw 带 alias 的列
|
|||
|
|
if ($raws) {
|
|||
|
|
$q->selectRaw(implode(', ', $raws));
|
|||
|
|
}
|
|||
|
|
};
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$this->query->with($with);
|
|||
|
|
return $this;
|
|||
|
|
}
|
|||
|
|
/**
|
|||
|
|
* 应用多级关联加载，支持字段数组或直接传入闭包
|
|||
|
|
*/
|
|||
|
|
protected function applyRelations(): self
|
|||
|
|
{
|
|||
|
|
if (empty($this->relations)) {
|
|||
|
|
return $this;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$with = [];
|
|||
|
|
foreach ($this->relations as $path => $handler) {
|
|||
|
|
if ($handler instanceof \Closure) {
|
|||
|
|
// 直接使用用户传入的闭包
|
|||
|
|
$with[$path] = $handler;
|
|||
|
|
} else {
|
|||
|
|
// 按字段数组构造查询
|
|||
|
|
$fields = $handler;
|
|||
|
|
$with[$path] = function ($q) use ($fields) {
|
|||
|
|
if ($fields === '*' || empty($fields)) {
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
// 确保主键被选中
|
|||
|
|
$model = $q->getModel();
|
|||
|
|
$key = $model->getKeyName();
|
|||
|
|
|
|||
|
|
$plain = [];
|
|||
|
|
$raws = [];
|
|||
|
|
foreach ($fields as $col) {
|
|||
|
|
if (preg_match('/\s+as\s+/i', $col)) {
|
|||
|
|
$raws[] = $col;
|
|||
|
|
} else {
|
|||
|
|
$plain[] = $col;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if (! in_array($key, $plain, true)) {
|
|||
|
|
array_unshift($plain, $key);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if ($plain) {
|
|||
|
|
$q->select($plain);
|
|||
|
|
}
|
|||
|
|
if ($raws) {
|
|||
|
|
$q->selectRaw(implode(', ', $raws));
|
|||
|
|
}
|
|||
|
|
};
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
$this->query->with($with);
|
|||
|
|
return $this;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 应用 whereHas 关联过滤
|
|||
|
|
*/
|
|||
|
|
protected function applyWhereHas(): self
|
|||
|
|
{
|
|||
|
|
foreach ($this->hasRelations as $relationData) {
|
|||
|
|
$this->query->whereHas($relationData['relation'], $relationData['callback']);
|
|||
|
|
}
|
|||
|
|
return $this;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 应用单个过滤条件
|
|||
|
|
*/
|
|||
|
|
protected function applyCondition(Builder $query, string $field, string $operator, mixed $value): void
|
|||
|
|
{
|
|||
|
|
switch (strtolower($operator)) {
|
|||
|
|
case 'between':
|
|||
|
|
$query->whereBetween($field, (array)$value);
|
|||
|
|
break;
|
|||
|
|
case 'like':
|
|||
|
|
$query->where($field, 'LIKE', "%{$value}%");
|
|||
|
|
break;
|
|||
|
|
case 'in':
|
|||
|
|
$query->whereIn($field, (array)$value);
|
|||
|
|
break;
|
|||
|
|
case 'not_in':
|
|||
|
|
$query->whereNotIn($field, (array)$value);
|
|||
|
|
break;
|
|||
|
|
case 'null':
|
|||
|
|
$query->whereNull($field);
|
|||
|
|
break;
|
|||
|
|
case 'not_null':
|
|||
|
|
$query->whereNotNull($field);
|
|||
|
|
break;
|
|||
|
|
default:
|
|||
|
|
$query->where($field, $operator, $value);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 根据 queryConfig 构造 fieldsMap
|
|||
|
|
* - 兼容 "col as alias"
|
|||
|
|
* - 自动把 counts 生成的 xxx_count 加入根字段
|
|||
|
|
*
|
|||
|
|
* @param array $config 完整的 applyQueryConfig 输入
|
|||
|
|
* @return array [''=>[主表字段…], 'relation'=>[字段…], …]
|
|||
|
|
*/
|
|||
|
|
public static function buildFieldsMap(array $config): array
|
|||
|
|
{
|
|||
|
|
$relations = $config['relations'] ?? [];
|
|||
|
|
$counts = $config['counts'] ?? [];
|
|||
|
|
$rawFields = $config['fields'] ?? [];
|
|||
|
|
|
|||
|
|
// 1) 根层字段：拆 alias + 自动加 count + 加顶级关联名
|
|||
|
|
$root = [];
|
|||
|
|
foreach ($rawFields as $f) {
|
|||
|
|
if (preg_match('/\s+as\s+/i', $f)) {
|
|||
|
|
[, $alias] = preg_split('/\s+as\s+/i', $f);
|
|||
|
|
$root[] = $alias;
|
|||
|
|
} else {
|
|||
|
|
$root[] = $f;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
// 把 withCount 生成的字段也加进来
|
|||
|
|
foreach ($counts as $rel) {
|
|||
|
|
$root[] = "{$rel}_count";
|
|||
|
|
}
|
|||
|
|
// 顶级关联名
|
|||
|
|
foreach (array_keys($relations) as $path) {
|
|||
|
|
$root[] = explode('.', $path, 2)[0];
|
|||
|
|
}
|
|||
|
|
$fieldsMap = ['' => array_values(array_unique($root))];
|
|||
|
|
|
|||
|
|
// 2) 每个关联：拆 alias + 加直接子关联
|
|||
|
|
foreach ($relations as $path => $rawCols) {
|
|||
|
|
$arr = [];
|
|||
|
|
$segments = explode('.', $path);
|
|||
|
|
$depth = count($segments);
|
|||
|
|
// 拆 alias
|
|||
|
|
foreach ($rawCols as $col) {
|
|||
|
|
if (preg_match('/\s+as\s+/i', $col)) {
|
|||
|
|
[, $alias] = preg_split('/\s+as\s+/i', $col);
|
|||
|
|
$arr[] = $alias;
|
|||
|
|
} else {
|
|||
|
|
$arr[] = $col;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
// 子关联名
|
|||
|
|
if ($depth > 1) {
|
|||
|
|
for ($i = 1; $i < $depth; $i++) {
|
|||
|
|
$parent = implode('.', array_slice($segments, 0, $i));
|
|||
|
|
$child = $segments[$i];
|
|||
|
|
$fieldsMap[$parent][] = $child;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
$fieldsMap[$path] = array_values(array_unique($arr));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return $fieldsMap;
|
|||
|
|
}
|
|||
|
|
}
|