我有一个模型WorkflowStep，它与TransportWorkflowStep和TransformworkflowStep具有多义关系
我的transportWorkflowStep与客户端还有其他关系。
当我在代码中执行此操作时：
/** @var TransportWorkflowStep $workflowStepEntity */
$workflowStepEntity = $workflowStep->entity;
try {
var_dump($workflowStepEntity->sourceClient);
} catch (\Exception $exception) {
dd($exception);
}
我收到此错误：
调用模型[App \ TransformWorkflowStep]上未定义的关系[sourceClient]。
第一个奇怪的事情是我在dd（$ workflowstep）时正在使用TransportWorkflowStep，所以我不知道他为什么抱怨TransformWorkflowStep
我的WorkflowStep模型：
public function entity(): MorphTo
{
return $this->morphTo();
}
我的TransportWorkflowStep模型：
public function workflowStep(): MorphOne
{
return $this->morphOne(WorkflowStep::class, 'entity');
}
public function sourceClient(): BelongsTo
{
return $this->belongsTo(Client::class, 'source_id', 'id');
}
public function destinationClient(): BelongsTo
{
return $this->belongsTo(Client::class, 'destination_id', 'id');
}
我的TransformWorkflowStep模型：
public function workflowStep(): MorphOne
{
return $this->morphOne(WorkflowStep::class, 'entity');
}
$ workflowStepEntity的转储：
object(App\TransportWorkflowStep)[439]
protected 'table' => string 'transport_workflow_steps' (length=24)
protected 'fillable' =>
array (size=4)
0 => string 'source_id' (length=9)
1 => string 'destination_id' (length=14)
2 => string 'source_options' (length=14)
3 => string 'destination_options' (length=19)
protected 'connection' => string 'mysql' (length=5)
protected 'primaryKey' => string 'id' (length=2)
protected 'keyType' => string 'int' (length=3)
public 'incrementing' => boolean true
protected 'with' =>
array (size=0)
empty
protected 'withCount' =>
array (size=0)
empty
protected 'perPage' => int 15
public 'exists' => boolean true
public 'wasRecentlyCreated' => boolean false
protected 'attributes' =>
array (size=8)
'id' => string '4d32e11c-6453-4f48-9419-7c5cbd647128' (length=36)
'source_id' => string '8c826f52-a78c-4ef5-acf5-8e6fd59004a0' (length=36)
'destination_id' => string '921f0d90-2fae-496e-9991-68128e87d6d5' (length=36)
'source_options' => string 'source options' (length=14)
'destination_options' => string 'destination options' (length=19)
'created_at' => string '2019-07-04 11:17:35' (length=19)
'updated_at' => string '2019-07-12 08:39:58' (length=19)
'deleted_at' => null
protected 'original' =>
array (size=8)
'id' => string '4d32e11c-6453-4f48-9419-7c5cbd647128' (length=36)
'source_id' => string '8c826f52-a78c-4ef5-acf5-8e6fd59004a0' (length=36)
'destination_id' => string '921f0d90-2fae-496e-9991-68128e87d6d5' (length=36)
'source_options' => string 'source options' (length=14)
'destination_options' => string 'destination options' (length=19)
'created_at' => string '2019-07-04 11:17:35' (length=19)
'updated_at' => string '2019-07-12 08:39:58' (length=19)
'deleted_at' => null
protected 'changes' =>
array (size=0)
empty
protected 'casts' =>
array (size=0)
empty
protected 'dates' =>
array (size=1)
0 => string 'deleted_at' (length=10)
protected 'dateFormat' => null
protected 'appends' =>
array (size=0)
empty
protected 'dispatchesEvents' =>
array (size=0)
empty
protected 'observables' =>
array (size=0)
empty
protected 'relations' =>
array (size=0)
empty
protected 'touches' =>
array (size=0)
empty
public 'timestamps' => boolean true
protected 'hidden' =>
array (size=0)
empty
protected 'visible' =>
array (size=0)
empty
protected 'guarded' =>
array (size=1)
0 => string '*' (length=1)
protected 'forceDeleting' => boolean false
WorkflowJob
<?php
namespace App\Jobs;
use App\Workflow;
use Carbon\Carbon;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
class WorkflowJob implements ShouldQueue
{
use Dispatchable;
use InteractsWithQueue;
use Queueable;
use SerializesModels;
/**
* @var Workflow
*/
protected $workflowId;
/**
* Create a new job instance.
*
* @return void
* @param string $workflowId
*/
public function __construct(string $workflowId)
{
$this->workflowId = $workflowId;
}
/**
* Execute the job.
*
* @return \Illuminate\Foundation\Bus\PendingDispatch
* @throws \Exception
*/
public function handle()
{
try {
$this->execute(Workflow::find($this->workflowId));
} catch (\Exception $exception) {
throw $exception;
}
}
/**
* Execute the WorkflowJob.
*
* @param Workflow $workflow
*/
private function execute(Workflow $workflow)
{
// start a new workflow instance
$workflowInstance = $this->startWorkflowInstance($workflow);
// start the first step
StepJob::dispatch($workflowInstance, $workflow->workflowSteps->first()->order);
}
/**
* Start a new WorflowInstance for a Workflow.
*
* @param Workflow $workflow
* @return \Illuminate\Database\Eloquent\Model
*/
private function startWorkflowInstance(Workflow $workflow)
{
return $workflow->workflowInstances()->create([
'started_at' => Carbon::now(),
]);
}
}
StepJob：
<?php
namespace App\Jobs;
use App\Client;
use App\File;
use App\TransportWorkflowStep;
use App\WorkflowInstance;
use App\WorkflowStep;
use Carbon\Carbon;
use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Foundation\Bus\Dispatchable;
use Illuminate\Queue\InteractsWithQueue;
use Illuminate\Queue\SerializesModels;
use Illuminate\Support\Facades\Log;
class StepJob implements ShouldQueue
{
use Dispatchable;
use InteractsWithQueue;
use Queueable;
use SerializesModels;
const LOG_START = 'start';
const LOG_END_SUCCESS = 'end';
const LOG_END_FAIL = 'fail';
/**
* @var WorkflowInstance
*/
private $workflowInstance;
/**
* @var int
*/
private $stepCount;
/**
* Create a new job instance.
*
* @param WorkflowInstance $workflowInstance
* @param int $order
*/
public function __construct(WorkflowInstance $workflowInstance, int $order)
{
$this->workflowInstance = $workflowInstance;
$this->stepCount = $order;
}
/**
* Execute the job.
*/
public function handle()
{
if ($this->stepCount <= $this->workflowInstance->workflow->workflowSteps->count()) {
/** @var WorkflowStep $workflowstep */
$workflowstep = $this->workflowInstance->workflow->workflowSteps->where('order', $this->stepCount)->first();
$workflowStepEntity = $workflowstep->entity;
if ($workflowStepEntity instanceof TransportWorkflowStep) {
/* @var TransportWorkflowStep $workflowStepEntity */
try {
var_dump($workflowStepEntity->sourceClient);
} catch (\Exception $exception) {
dd($exception);
}
var_dump($workflowstep->entity->sourceClient);
} else {
$workflowstep->entity->transformer
}
StepJob::dispatch($this->workflowInstance, $this->stepCount + 1);
} else {
return;
}
}
}
答案 0 :(得分：0)
您发消息说：Call to undefined relationship [sourceClient] on model [App\TransformWorkflowStep].
您的模型定义（TransformWorkflowStep）：
public function workflowStep(): MorphOne
{
return $this->morphOne(WorkflowStep::class, 'entity');
}
错误消息正确，在TransformWorkflowStep模型上没有sourceClient关系。您应该定义它或停止使用它;）
编辑： 您可以尝试这样做：
foreach($workflowStepCollection as $workflowStep)
{
dump($workflowStep->entity);
try
{
$x = $workflowStep->sourceClient;
}
catch(\Exception $ex)
{
dd($ex->getMessage());
}
}
当它失败（dd）时，dd之前的最后一个结果应该确切地告诉您哪一个正在变坏。