我正在使用Laravel Eloquent查询构建器,我有一个查询,我想在多个条件下使用WHERE
子句。它有效,但它并不优雅。
例:
$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();
有没有更好的方法来做到这一点,还是我应该坚持这种方法?
在Laravel 5.3中,您可以使用更多粒度的数组作为数组传递:
$query->where([
['column_1', '=', 'value_1'],
['column_2', '<>', 'value_2'],
[COLUMN, OPERATOR, VALUE],
...
])
就个人而言,我没有在多个where
调用中找到用例,但事实是你可以使用它。
自2014年6月起,您可以将数组传递给where
只要你想让所有wheres
使用and
运算符,你就可以这样对它们进行分组:
$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();
以上将导致此类查询:
SELECT * FROM users
WHERE (field = value AND another_field = another_value AND ...)
OR (yet_another_field = yet_another_value AND ...)
$projects = DB::table('projects')->where([['title','like','%'.$input.'%'],
['status','<>','Pending'],
['status','<>','Not Available']])
->orwhere([['owner', 'like', '%'.$input.'%'],
['status','<>','Pending'],
['status','<>','Not Available']])->get();
您可以在Laravel 5.3中使用雄辩的语言
所有结果
UserModel::where('id_user', $id_user)
->where('estado', 1)
->get();
部分结果
UserModel::where('id_user', $id_user)
->where('estado', 1)
->pluck('id_rol');
没有一个真实的例子,很难提出建议。但是,我从来不需要在查询中使用那么多WHERE子句,这可能表明数据结构存在问题。
了解数据规范化可能会有所帮助:http://en.wikipedia.org/wiki/Third_normal_form
使用whereIn
条件并传递数组
$array = [1008,1009,1010];
User::whereIn('users.id', $array)->get();
您可以在where子句中使用array,如下所示。
$result=DB::table('users')->where(array(
'column1' => value1,
'column2' => value2,
'column3' => value3))
->get();
DB::table('users')
->where('name', '=', 'John')
->orWhere(function ($query) {
$query->where('votes', '>', 100)
->where('title', '<>', 'Admin');
})
->get();
根据我的建议,如果你正在进行过滤或搜索
那你应该去:
$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();
用这个
$users = DB::table('users')
->where('votes', '>', 100)
->orWhere('name', 'John')
->get();
使用纯粹的Eloquent,就像这样实现它。此代码返回帐户处于活动状态的所有登录用户。 $users = \App\User::where('status', 'active')->where('logged_in', true)->get();
public function search()
{
if (isset($_GET) && !empty($_GET))
{
$prepareQuery = '';
foreach ($_GET as $key => $data)
{
if ($data)
{
$prepareQuery.=$key . ' = "' . $data . '" OR ';
}
}
$query = substr($prepareQuery, 0, -3);
if ($query)
$model = Businesses::whereRaw($query)->get();
else
$model = Businesses::get();
return view('pages.search', compact('model', 'model'));
}
}
查询范围可以帮助您使代码更具可读性。
http://laravel.com/docs/eloquent#query-scopes
用一些例子更新这个答案:
在您的模型中,创建这样的范围方法:
public function scopeActive($query)
{
return $query->where('active', '=', 1);
}
public function scopeThat($query)
{
return $query->where('that', '=', 1);
}
然后,您可以在构建查询时调用此范围:
$users = User::active()->that()->get();
$variable = array('this' => 1,
'that' => 1
'that' => 1,
'this_too' => 1,
'that_too' => 1,
'this_as_well' => 1,
'that_as_well' => 1,
'this_one_too' => 1,
'that_one_too' => 1,
'this_one_as_well' => 1,
'that_one_as_well' => 1);
foreach ($variable as $key => $value) {
User::where($key, '=', $value);
}
您可以在匿名函数中使用子查询,如下所示:
$results = User::where('this', '=', 1)
->where('that', '=', 1)
->where(function($query) {
/** @var $query Illuminate\Database\Query\Builder */
return $query->where('this_too', 'LIKE', '%fake%')
->orWhere('that_too', '=', 1);
})
->get();
在这种情况下,你可以使用这样的东西:
User::where('this', '=', 1)
->whereNotNull('created_at')
->whereNotNull('updated_at')
->where(function($query){
return $query
->whereNull('alias')
->orWhere('alias', '=', 'admin');
});
它应该为您提供如下查询:
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')
使用数组的条件:
$users = User::where([
'column1' => value1,
'column2' => value2,
'column3' => value3
])->get();
会产生如下的查询:
SELECT * FROM TABLE WHERE column1=value1 and column2=value2 and column3=value3
使用匿名函数的条件:
$users = User::where('column1', '=', value1)
->where(function($query) use ($variable1,$variable2){
$query->where('column2','=',$variable1)
->orWhere('column3','=',$variable2);
})
->where(function($query2) use ($variable1,$variable2){
$query2->where('column4','=',$variable1)
->where('column5','=',$variable2);
})->get();
会产生如下的查询:
SELECT * FROM TABLE WHERE column1=value1 and (column2=value2 or column3=value3) and (column4=value4 and column5=value5)
多个where子句
$query=DB::table('users')
->whereRaw("users.id BETWEEN 1003 AND 1004")
->whereNotIn('users.id', [1005,1006,1007])
->whereIn('users.id', [1008,1009,1010]);
$query->where(function($query2) use ($value)
{
$query2->where('user_type', 2)
->orWhere('value', $value);
});
if ($user == 'admin'){
$query->where('users.user_name', $user);
}
终于得到了结果
$result = $query->get();
whereColumn
方法可以传递多个条件的数组。这些条件将使用and
运算符连接。
例:
$users = DB::table('users')
->whereColumn([
['first_name', '=', 'last_name'],
['updated_at', '>', 'created_at']
])->get();
$users = User::whereColumn([
['first_name', '=', 'last_name'],
['updated_at', '>', 'created_at']
])->get();
有关更多信息,请查看文档https://laravel.com/docs/5.4/queries#where-clauses的此部分
Model::where('column_1','=','value_1')->where('column_2 ','=','value_2')->get();
要么
// If you are looking for equal value then no need to add =
Model::where('column_1','value_1')->where('column_2','value_2')->get();
要么
Model::where(['column_1' => 'value_1','column_2' => 'value_2'])->get();
确保将任何其他过滤器应用于子查询,否则可能会收集所有记录。
$query = Activity::whereNotNull('id');
$count = 0;
foreach ($this->Reporter()->get() as $service) {
$condition = ($count == 0) ? "where" : "orWhere";
$query->$condition(function ($query) use ($service) {
$query->where('branch_id', '=', $service->branch_id)
->where('activity_type_id', '=', $service->activity_type_id)
->whereBetween('activity_date_time', [$this->start_date, $this->end_date]);
});
$count++;
}
return $query->get();