使用if条件的Laravel查询

Question

如果符合条件，我想将数据插入表中。下面的代码是否有这样的代码？

DB::table('food')->insert([
    'dessert' => $dessert1,
    if(beverage == 1)
        'drinks' => 1;
    else if(beverage == 2)
        'drinks' => 2;
]);
...

Answer 1

你可以试试这个:(食物是你的模特）

$food = new Food(); // new instance of food model
$food->dessert = $dessert1;
if(beverage == 1)
 $food->drinks = 1;
else if(beverage == 2)
 $food->drinks = 2;
$food->save();

如果条件有查询，您的处理方式如何，但根据您的问题，您可以执行以下操作：

DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks' => $beverage,
]);

Answer 2

像这样使用：

<强>代码：

$drinks = 0;
if(beverage == 1)
   $drinks = 1;
else if(beverage == 2)
   $drinks = 2;

DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks'  => $drinks
]);

Answer 3

一种简单的方法是将预定义值数组生成为beverage => drink

$drinks = [ 1 => 1, 2 => 2 ];

DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks' => $drinks[$beverage];
]);

Answer 4

我想你可以试试这个：

if($beverage == 1){
  DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks' => 1,

]);

}

if(beverage == 2){
  DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks' => 2,

]);

}

或

$food = new Food;
$food->dessert = $dessert1;

if($beverage == 1){
  $food->drinks = 1;
}

if($beverage == 1){
  $food->drinks = 2;
}

$food->save();

Answer 5

您需要预先确定值，并在insert外部使用if：

$values = [ "dessert" => $dessert1 ];
if($beverage == 1) //How on earth did you ever expect if (beverage == 1) to work in anything?
     $values['drinks'] = 1;
else if($beverage == 2)
    $values['drinks'] = 2;

DB::table('food')->insert($values);

您还可以使用ternary operator (?:)确定内联值：

DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks' => ($beverage==1?1:($beverage==2?2:null));
]);

在您的情况下，以下内容也可能有效：

DB::table('food')->insert([
    'dessert' => $dessert1,
    'drinks' => $beverage
]);

Answer 6

你也可以像这样DB制作条件

$query = DB::table('food');

$query->insert(['dessert' => $dessert1]);

if(beverage == 1)
    $query->insert(['drinks' => 1]);
else if(beverage == 2)
    $query->insert(['drinks' => 2]);

Answer 7

首先检查您的状况，这将使您的代码清晰可读 比如@RJParikh

$drinks = 0;
if(beverage == 1)
   $drinks = 1;
else if(beverage == 2)
   $drinks = 2;

或者，如果您的参赛人数有限，请执行@Zayn Ali

$drinks = [ 1 => 1, 2 => 2 ]; // $beverageValue => $drinksValue

然后使用insert -

DB::table('food')->insert([
    ......,
    ......,
]);

但请记住，如果你使用这样的插入，你必须使字段可以从模型填充。最好在食物桌上制作模型并按照@Firas Rassas回答。结合答案您的代码将如下所示 -

 $drinks = 0;
    if(beverage == 1)
       $drinks = 1;
    else if(beverage == 2)
       $drinks = 2;

    $food = new Food(); // new instance of food model
    $food->dessert = $dessert1;
    $food->drinks = $drinks;
    $food->save();