php - Laravel 5.6 PostGres Json 默认为空

Question

我一次只需要插入 1 个 JSON 数组，因此如果没有条目，则需要将 JSON 数组默认为 null。我有办法做到这一点吗？

使用来自:https://github.com/laravel/framework/issues/16107 的方法

我的迁移是

Schema::create('job_details', function (Blueprint $table) {
    $table->integer('id')->default('0');
    $table->primary('id');
    $table->foreign('id')->references('id')->on('job_searches');
    $table->json('Location_of_job');
    $table->json('API_URL'); 
    $table->json('Redirected_URL'); 
    $table->json('Description'); 
    $table->json('Salary',6,2); 
    $table->timestamps();
});

型号:

protected $primaryKey = 'id';
public $timestamps = true;

protected $fillable = ['API_URL', 'Redirected_URL','Location_of_job','Description','Salary',];

protected $casts = [
    'Location_of_job' => 'array',
    'API_URL' => 'array',
    'Redirected_URL' => 'array',
    'Description' => 'array',
    'Salary' => 'array'
];
protected $attributes = array(
    'json' => '{}'
);

获取错误:

SQLSTATE[23502]: Not null violation: 7 ERROR: null value in column "Location_of_job" violates not-null constraint DETAIL: Failing row contains (0, null, null, null, null, null, null, null). (SQL: insert into "job_details" ("API_URL") values (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), (), ())

Answer 1

来自 the docs :

To make the column "nullable", you may use the nullable method

$table->json('Location_of_job')->nullable();
$table->json('API_URL')->nullable(); 
$table->json('Redirected_URL')->nullable(); 
$table->json('Description')->nullable(); 
$table->json('Salary', 6, 2)->nullable();