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Question

我有事件模型，希望能够 select 其中的其他事件显示在前端。

我首先尝试的是关系，但问题是我不知道如何使用枢轴 table 因为实际上，它应该包含两个字段并且都应该命名为 'event_id' 这显然是不可能的。也许有人可以建议任何避免这种情况的方法或更好的方法来解决我在事件模型中使用事件选择字段的问题？

提前致谢。

Answer 1

是的 same name for relation_id 可能是不可能的，但我们有选择:)

你可以像这样创建中间 table

<?php namespace HardikSatasiya\SoTest\Updates;

use Schema;
use October\Rain\Database\Updates\Migration;

class BuilderTableCreateHardiksatasiyaSotestEventsEvents extends Migration
{
    public function up()
    {
        Schema::create('hardiksatasiya_sotest_events_events', function($table)
        {
            $table->engine = 'InnoDB';
            $table->increments('id')->unsigned();
            $table->integer('events_id')->unsigned();
            $table->integer('related_events_id')->unsigned();
        });
    }

    public function down()
    {
        Schema::dropIfExists('hardiksatasiya_sotest_events_events');
    }
}

Then, just we need to add relation with proper options

public $belongsToMany =[
    'skills' => [
        'HardikSatasiya\SoTest\Models\Skills',
        'table' => 'hardiksatasiya_sotest_events_skills',
        'order' => 'title'
    ],
    'related_events' => [
        'HardikSatasiya\SoTest\Models\Events',
        'table' => 'hardiksatasiya_sotest_events_events',
        'order' => 'title',
        'key' => 'events_id',
        'otherKey' => 'related_events_id'
    ]
];

we are specifying that for this relation event_id is for main event and related_events_id is for other event which we add as related event. config_relation.yaml <- which will be inside event controller view folder.

# ===================================
#  Relation Behavior Config
# ===================================

skills:
    label: Skill
    view:
        list: $/hardiksatasiya/sotest/models/skills/columns.yaml
        toolbarButtons: add|remove
    manage:
        list: $/hardiksatasiya/sotest/models/skills/columns.yaml
        form: $/hardiksatasiya/sotest/models/skills/fields.yaml

related_events:
    label: Events
    view:
        list: $/hardiksatasiya/sotest/models/events/columns.yaml
        toolbarButtons: add|remove
    manage:
        list: $/hardiksatasiya/sotest/models/events/columns.yaml
        form: $/hardiksatasiya/sotest/models/events/fields.yaml

event modal fields $/hardiksatasiya/sotest/models/events/fields.yaml

fields:
    title:
        label: Title
        span: auto
        type: text
    description:
        label: Description
        size: ''
        span: auto
        type: textarea
    skills:
        label: Skills
        type: partial
        path: $/hardiksatasiya/sotest/controllers/events/_relation_skills.htm
    related_events:
        label: Events
        type: partial
        path: $/hardiksatasiya/sotest/controllers/events/_related_events.htm

now for partial _related_events.htm

<?= $this->relationRender('related_events') ?>

result

accessing in code

use HardikSatasiya\SoTest\Models\Events as EventsModel;

function onStart() {
    $this['event'] = $event = EventsModel::first();
    dd($event->related_events);
}

如有疑问请评论。

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