Question

说我有2个查询生成器：

$builderA = User::where("happiness", ">", 5);
$builderB = User::where("color", "blue");

除了键入一个新的构建器之外，还有什么方法可以组合这两个构建器，从而产生如下所示的构建器？

$combined = User::where("happiness", ">", 5)->where("color", "blue");

Answer 1

可以。

$combinedUsers = User::where([
   ["happiness", ">", 5], 
   ["color" => "blue"]
])->get();

或

$combinedUsers = User::where([
   ["happiness", ">", 5], 
   ["color", "=", "blue"]
])->get();

您必须使用orWhere

// one request in db
$combinedUsers = User::where("happiness", ">", 5)->orWhere("color", "blue")->get();

// filter in Collection instance
$happyUsers = $combinedUsers->where("happiness", ">", 5); 
$blueUsers = $combinedUsers->where("color", "blue");

还可以使用

$queryBulider = User::newQuery();
$queryBulider->...->get();

$queryBulider是Illuminate\Database\Eloquent\Builder的实例。

Answer 2

对于更复杂的情况，可以使用tap和mergeWheres：

$where = User::where('a', 1)->where('b', '>', 2)->where('c', '<', 2)->where('d', '<>', 2);

$combined = User::where('e', 5)->tap(function (Builder $builder) use ($where) {
    $builder->mergeWheres($where->wheres, $where->getBindings());
});

Laravel 5.6添加了几种处理子查询的方法：

Answer 3

如果要基于任何条件或与任何输入匹配添加查询，则可以尝试以下操作：

$combinedUsers = User::query();
if(YourCondition){
    $combinedUsers = $combinedUsers->where("happiness", ">", 5);
}
if(YourCondition){
    $combinedUsers = $combinedUsers->where("color","blue");
}
if(YourCondition){
    $combinedUsers = $combinedUsers->orderBy("color");
}
$combinedUsers = $combinedUsers->get();

有没有一种方法可以组合Laravel查询构建器条件？

3 个答案: