autocde2.0/app/Http/Resources/API/ProjectGanttResource.php

<?php

namespace App\Http\Resources\API;

use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

class ProjectGanttResource extends JsonResource
{
    /**
     * Transform the resource into an array.
     *
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        if ((strtotime($this->end)-strtotime($this->begin))===0){
            $progress=0; //防止分母为0
        }
        else{
            $progress=  (time()-strtotime($this->begin))/(strtotime($this->end)-strtotime($this->begin));
            if (time()<strtotime($this->begin))  $progress=0; //1.当前时间<开始时间,进度则为0
            if (time()>=strtotime($this->end)) $progress=1;//2.分母不为0,当前时间>=结束时间,进度则为1
        }




        return [
            "id" => $this->id,
            "name" => $this->name,
            "status" => $this->status,
            "assign_id" => $this->assignTo?$this->assignTo->id:null,
            "assign_name" =>$this->assignTo? $this->assignTo->name:null,
            "assign_username" => $this->assignTo?$this->assignTo->username:null,
            "begin" => $this->begin,
            "end" => $this->end,
            "progress" =>$progress,
            "parent_id" => $this->group_label_id,
            "parent_name" => $this->group_label_name,
            "group" => (string)$this->group,
        ];
    }
}