'decimal:4', 'competitor_value' => 'decimal:4', 'delta_percent' => 'decimal:2', ]; public function researchProject() { return $this->belongsTo(ResearchProject::class, 'research_project_id'); } public function lineRevision() { return $this->belongsTo(LineRevision::class, 'line_revision_id'); } public function competitiveProduct() { return $this->belongsTo(CompetitiveProduct::class, 'competitive_product_id'); } }