crm/app/model/DailyTasks.php

<?php

namespace app\model;

use think\Model;

class DailyTasks extends Model
{

	//装修案例
    public function materialCase(){
    	return $this->hasOne(MaterialCase::class,'id','con_id');
    }

	//客户见证
    public function materialEvidence(){
    	return $this->hasOne(MaterialEvidence::class,'id','con_id');
    }

	//视频素材
    public function video(){
    	return $this->hasOne(Video::class,'id','con_id');
    }

	//图文素材
    public function article(){
    	return $this->hasOne(Article::class,'id','con_id');
    }

	//朋友圈
    public function dailyWechatArticle(){
    	return $this->hasOne(DailyWechatArticle::class,'id','con_id');
    }
    /**
     * 多态关联
     */
    public function content()
    {
        return $this->morphTo(['type', 'con_id'], [
            'material_case'=>'app\model\MaterialCase',
            'video'=>'app\model\Video',
            'evidencelist' => 'app\model\MaterialEvidence',
            'article' => 'app\model\Article',
            'wxshowlist' => 'app\model\DailyWechatArticle'
        ]);
    }
}