51 lines
1.3 KiB
PHP
51 lines
1.3 KiB
PHP
<?php
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namespace App\Models;
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use Illuminate\Database\Eloquent\Model;
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use LogicException;
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/**
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* One entry in a poll's append-only ballot ledger. Holds no voter identity.
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* Entries are only ever inserted, through App\Polls\Ledger.
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*/
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class PollLedgerEntry extends Model
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{
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public const CAST = 'cast';
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public const CHANGE = 'change';
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public const WITHDRAW = 'withdraw';
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public const SEAL = 'seal';
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protected $table = 'poll_ledger';
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public $timestamps = false;
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protected $fillable = [
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'poll_id', 'sequence', 'format_version', 'entry_type', 'fingerprint', 'refers_to_sequence',
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'payload', 'recorded_at', 'previous_hash', 'hash',
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];
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protected $casts = [
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'sequence' => 'integer',
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'format_version' => 'integer',
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'refers_to_sequence' => 'integer',
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'payload' => 'array',
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];
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protected static function booted(): void
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{
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static::updating(fn () => throw new LogicException('Poll ledger entries cannot be changed.'));
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static::deleting(fn () => throw new LogicException('Poll ledger entries cannot be deleted.'));
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}
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public function poll()
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{
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return $this->belongsTo(Poll::class);
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}
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public function isBallot(): bool
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{
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return in_array($this->entry_type, [self::CAST, self::CHANGE], true);
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}
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}
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