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55 lines
1.2 KiB
55 lines
1.2 KiB
<?php
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namespace App\Models;
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use Illuminate\Database\Eloquent\Model;
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use Illuminate\Database\Eloquent\Relations\BelongsTo;
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use Illuminate\Database\Eloquent\Relations\BelongsToMany;
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use Illuminate\Database\Eloquent\SoftDeletes;
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class Paper extends Model
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{
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use SoftDeletes;
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protected $fillable = [
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'title',
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'authors',
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'university_id',
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'school_name',
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'published_at',
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'url',
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'summary',
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'source',
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'crawl_job_id',
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'external_id',
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'source_site',
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];
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protected $casts = [
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'university_id' => 'integer',
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'crawl_job_id' => 'integer',
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'published_at' => 'date',
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];
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public function university(): BelongsTo
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{
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return $this->belongsTo(University::class);
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}
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public function crawlJob(): BelongsTo
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{
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return $this->belongsTo(CrawlJob::class);
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}
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public function teachers(): BelongsToMany
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{
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return $this->belongsToMany(Teacher::class, 'teacher_papers')->withTimestamps();
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}
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/** 待关联老师（与论文库 link_status=unlinked 口径一致） */
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public function scopePendingTeacherLink($query)
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{
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return $query->doesntHave('teachers');
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}
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}
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