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我一直在调查这个问题,我找到了造成这种情况的原因。见问题底部

我在 Laravel 5.4 上并使用 BackPackForLaravel 作为我的管理界面。

我有一个GenreTableMigration像下面这样的:

Schema::create('genres', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name');
    $table->string('slug')->default('');
    $table->string('image');
    $table->enum('status', ['PUBLISHED', 'DRAFT'])->default('PUBLISHED');
    $table->boolean('featured')->default(0);
    $table->timestamps();
    $table->softDeletes();
});

请注意,该image列不可为空并且没有默认值。在我的模型中Genre是这样的:

protected $fillable = ['slug', 'name', 'image', 'status', 'featured'];

我的模型中还有image列的变异器:

/**
 * Store Image
 */

public function setImageAttribute($value)
{
    $attribute_name = "image";
    $disk = "public";
    $destination_path = "Albums";

    // if the image was erased
    if ($value == null) {
        // delete the image from disk
        \Storage::disk($disk)->delete($this->image);

        // set null in the database column
        $this->attributes[$attribute_name] = null;
    }

    // if a base64 was sent, store it in the db
    if (starts_with($value, 'data:image')) {
        // 0. Make the image
        $image = \Image::make($value);
        // 1. Generate a filename.
        $filename = md5($value . time()) . '.jpg';
        // 2. Store the image on disk.
        \Storage::disk($disk)->put($destination_path . '/' . $filename, $image->stream());
        // 3. Save the path to the database
        $this->attributes[$attribute_name] = $destination_path . '/' . $filename;
    }
}

我的GenresTableSeeder

$path = base_path('seeder-resources/GenresPhotos');

DB::table('genres')->delete();

$genres = [
    [
        'name' => 'Pop',
        'image' => "$path/Pop.jpeg",
        'status' => 'PUBLISHED',
        'featured' => mt_rand(0, 1),
        'created_at' => Carbon::now()->format('Y-m-d H:i:s'),
        'updated_at' => Carbon::now()->format('Y-m-d H:i:s'),
    ],
];

foreach ($genres as $genre) {
    $this->command->info(print_r($genre));
    Genre::create($genre);
}

当我使用GenreCrudController并使用该Add Genre按钮时,一切正常,并且创建了行,但是当我尝试为表播种时,我的控制台上出现以下错误。

  [Illuminate\Database\QueryException]                                         
  SQLSTATE[HY000]: General error: 1364 Field 'image' doesn't have a default v  
  alue (SQL: insert into `genres` (`name`, `status`, `featured`, `created_at`  
  , `updated_at`, `slug`) values (Pop, PUBLISHED, 0, 2017-03-10 08:43:15, 201  
  7-03-10 08:43:15, pop))  

即使我将数组中的image值(这是一个字符串列)设置为. 我还尝试像下面这样雄辩地播种:$genresAnything

$genre = new Genre();
$genre->name = 'Pop';
$genre->image = "anything";
$genre->status = 'PUBLISHED';
$genre->featured = 1;
$genre->save();

控制台中仍然存在相同的错误。有谁有想法吗?

更新 所以我已经将image列名更改为somestring,奇怪的是播种机工作了。我试图将image列放在另一个表中,比如说Articles表并添加'image' => 'test'到我的表中ArticlesTableSeeder,然后它再次起作用。然后我在Article模型和 BOOM 中添加了相同的 mutator!我表中的image输出为 NULL。有人知道为什么我的setImageAttribute变异器会导致这个问题吗?

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3 回答 3

0

在您的迁移中,请更改如下并尝试:

Schema::create('genres', function (Blueprint $table) {
    $table->increments('id');
    $table->string('name')->nullable();
    $table->string('slug')->nullable()->default('');
    $table->string('image')->nullable();
    $table->enum('status', ['PUBLISHED', 'DRAFT'])->default('PUBLISHED');
    $table->boolean('featured')->default(0);
    $table->timestamps();
    $table->softDeletes();
});

请为您的字符串字段提供 nullable()。

于 2017-03-10T06:02:12.493 回答
0

第一:如果您在数据库中使用默认值,请这样做(可以为空): $table->string('slug')->nullable()->default(''); 否则 laravel 不会创建正确的新记录。

二:尝试使用'image' => $path.'/Pop.jpeg'

我不确定,但也许你必须转义字符串'image' => $path.'\/Pop.jpeg'

于 2017-03-10T07:25:36.077 回答
0

所以我发现 MutatorsetImageAttribute只接受 Null 或 base64$value并且我试图为图像文件播种,当它失败时我试图为字符串播种。我想出了这个 Mutator,它工作得很好:

/**
 * Store Image
 */
public function setImageAttribute($value)
{
    $attribute_name = "image";
    $disk = "public";
    $destination_path = "Genres";

    // if the image was erased
    if ($value == null) {
        // delete the image from disk
        \Storage::disk($disk)->delete($this->image);

        // set null in the database column
        $this->attributes[$attribute_name] = null;
    } // if a base64 was sent, store it in the db
    elseif (starts_with($value, 'data:image')) {
        // 0. Make the image
        $image = \Image::make($value);
        // 1. Generate a filename.
        $filename = md5($value . time()) . '.jpg';
        // 2. Store the image on disk.
        \Storage::disk($disk)->put($destination_path . '/' . $filename, $image->stream());
        // 3. Save the path to the database
        $this->attributes[$attribute_name] = $destination_path . '/' . $filename;
    } // else if a file was sent
    else {
        // 0. Convert the image to jpeg format
        $image = \Image::make($value)->encode('jpg', 100);
        // 1. Generate a filename
        $filename = md5($value . time()) . '.jpg';
        // 2. Store the image on disk
        \Storage::disk($disk)->put($destination_path . '/' . $filename, $image->stream());
        // 3. Save the path to databse
        $this->attributes[$attribute_name] = $destination_path . '/' . $filename;
    }
}
于 2017-03-11T12:43:37.537 回答