Php 关联多个列时如何定义Laravel关系

我有下面提到的模型， 如何在其上实现laravel雄辩的关系

用户模型

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

后期模型

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

第一阶段（后期模型）

第二阶段（后期模型）

第三阶段（后期ThreeModel）

第四阶段（后期前模型）

第五阶段（后期车型）

第六阶段（后期模型）

---

关系可以指定它们使用的列：

public function assigner(){
    return $this->belongsTo(User::class, 'assigned_by');
}
public function assignee(){
    return $this->belongsTo(User::class, 'assigned_to');
}

---

关系可以指定它们使用的列：

public function assigner(){
    return $this->belongsTo(User::class, 'assigned_by');
}
public function assignee(){
    return $this->belongsTo(User::class, 'assigned_to');
}

---

用户模型应该有一个

hasMany

关系类型，如下所示：

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class User extends Model {
    //...
    public function posts() {
        return $this->hasMany(Post::class);
    }
}

---

用户模型应具有如下关系类型：

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class User extends Model {
    //...
    public function posts() {
        return $this->hasMany(Post::class);
    }
}

我通过定义以下关系来实现

在后期模型中

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

在Post模型中

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

在用户模型中

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

我是通过定义以下关系来实现的

在后期模型中

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

在Post模型中

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

在用户模型中

id
name

id
title
desc
created_by = foreign key on User->id

id
post_id
assigned_by
assigned_to

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

post_id
assigned_by  = foreign key on User->id
assigned_to  = foreign key on User->id

public function assignedPost() {
    return $this->belongsTo(Post::class, 'post_id', 'post_id');
}

public function assigner()
{
    return $this->belongsTo(User::class, 'assigned_by', 'id');
}

public function assignee()
{
    return $this->belongsTo(User::class, 'assigned_to', 'id');
}

public function identifiedBy() {
    return $this->belongsTo(User::class, 'identified_by', 'id');
}

public function postAssignedBy() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_by' );
}

public function postAssignedTo() {
    return $this->hasManyThrough(User::class, PostStageOneModel::class, 'post_id', 'id', 'post_id', 'assigned_to' );
}

public function assigned()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_by', 'id');
}

public function assignedTo()
{
    return $this->hasMany(PostStageOneModel::class, 'assigned_to', 'id');
}

您好，杰夫，非常感谢您的努力，对于转让人，我得到了正确的结果，但是对于受让人，我得到了空值！谢谢你的努力。请看我的答案，让我知道，如果我能在这方面有所改进。你好，杰夫，非常感谢你的努力，对于转让人，我得到了正确的结果，但是对于受让人，我得到了零！谢谢你的努力。请看我的答案，让我知道，如果我能在这方面有所改进。谢谢你的努力。请看我的答案，如果我能在这方面有所改进，请告诉我。听起来正确“return$this->belongsTo（User:：class，'assigned_by'，'id'）；”在与用户的关系中，您可以省略“id”（这是默认设置），我故意提到了所有内容，以便将来使用它的每个人都能更容易地理解它。谢谢，谢谢你的努力。请看我的答案，如果我能在这方面有所改进，请告诉我。听起来正确“return$this->belongsTo（User:：class，'assigned_by'，'id'）；”在与用户的关系中，您可以省略“id”（这是默认设置），我故意提到了所有内容，以便将来使用它的每个人都能更容易地理解它。非常感谢。