我使用Laravel雄辩的查询构建器，我有一个查询，我想在多个条件上有一个where子句。它能起作用，但并不优雅。
例子:
$results = User::where('this', '=', 1)
->where('that', '=', 1)
->where('this_too', '=', 1)
->where('that_too', '=', 1)
->where('this_as_well', '=', 1)
->where('that_as_well', '=', 1)
->where('this_one_too', '=', 1)
->where('that_one_too', '=', 1)
->where('this_one_as_well', '=', 1)
->where('that_one_as_well', '=', 1)
->get();
有没有更好的方法，或者我应该坚持这个方法?
当前回答
根据我的建议，如果你正在做筛选或搜索
那么你应该选择:
$results = User::query();
$results->when($request->that, function ($q) use ($request) {
$q->where('that', $request->that);
});
$results->when($request->this, function ($q) use ($request) {
$q->where('this', $request->that);
});
$results->when($request->this_too, function ($q) use ($request) {
$q->where('this_too', $request->that);
});
$results->get();
其他回答
在Laravel 5.3中(在7.x中仍然如此)，你可以使用更细粒度的数组:
$query->where([
['column_1', '=', 'value_1'],
['column_2', '<>', 'value_2'],
[COLUMN, OPERATOR, VALUE],
...
])
就我个人而言，我还没有发现这个用例超过多个where调用，但事实是你可以使用它。
自2014年6月起，您可以将数组传递到where
只要你想要所有的where use和operator，你可以这样分组:
$matchThese = ['field' => 'value', 'another_field' => 'another_value', ...];
// if you need another group of wheres as an alternative:
$orThose = ['yet_another_field' => 'yet_another_value', ...];
然后:
$results = User::where($matchThese)->get();
// with another group
$results = User::where($matchThese)
->orWhere($orThose)
->get();
以上将导致这样的查询:
SELECT * FROM users
WHERE (field = value AND another_field = another_value AND ...)
OR (yet_another_field = yet_another_value AND ...)
在这种情况下，你可以使用这样的代码:
User::where('this', '=', 1)
->whereNotNull('created_at')
->whereNotNull('updated_at')
->where(function($query){
return $query
->whereNull('alias')
->orWhere('alias', '=', 'admin');
});
它应该为你提供这样的查询:
SELECT * FROM `user`
WHERE `user`.`this` = 1
AND `user`.`created_at` IS NOT NULL
AND `user`.`updated_at` IS NOT NULL
AND (`alias` IS NULL OR `alias` = 'admin')
代码示例。
首先:
$matchesLcl=[];
数组在这里被填充使用所需的计数/循环条件，增量:
$matchesLcl['pos']= $request->pos;
$matchesLcl['operation']= $operation;
//+......+
$matchesLcl['somethingN']= $valueN;
更进一步，他又用了这样一种简洁的表达:
if (!empty($matchesLcl))
$setLcl= MyModel::select(['a', 'b', 'c', 'd'])
->where($matchesLcl)
->whereBetween('updated_at', array($newStartDate . ' 00:00:00', $newEndDate . ' 23:59:59'));
else
$setLcl= MyModel::select(['a', 'b', 'c', 'd'])
->whereBetween('updated_at', array($newStartDate . ' 00:00:00', $newEndDate . ' 23:59:59'));
Model::where('column_1','=','value_1')
->where('column_2 ','=','value_2')
->get();
OR
// If you are looking for equal value then no need to add =
Model::where('column_1','value_1')
->where('column_2','value_2')
->get();
OR
Model::where(['column_1' => 'value_1',
'column_2' => 'value_2'])->get();
如果你的条件是这样的(匹配一个值)，一个简单的更优雅的方式是:
$results = User::where([
'this' => value,
'that' => value,
'this_too' => value,
...
])
->get();
但如果你需要OR子句，那么确保你对每个OR where()子句重复必须满足条件。
$player = Player::where([
'name' => $name,
'team_id' => $team_id
])
->orWhere([
['nickname', $nickname],
['team_id', $team_id]
])
