sam-manage/app/Models/Documents/DocumentData.php

<?php

namespace App\Models\Documents;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class DocumentData extends Model
{
    protected $table = 'document_data';

    protected $fillable = [
        'document_id',
        'section_id',
        'column_id',
        'row_index',
        'field_key',
        'field_value',
    ];

    protected $casts = [
        'row_index' => 'integer',
    ];

    // =========================================================================
    // Relationships
    // =========================================================================

    public function document(): BelongsTo
    {
        return $this->belongsTo(Document::class);
    }

    // =========================================================================
    // Scopes
    // =========================================================================

    public function scopeForSection($query, int $sectionId)
    {
        return $query->where('section_id', $sectionId);
    }

    public function scopeForField($query, string $fieldKey)
    {
        return $query->where('field_key', $fieldKey);
    }
}