0
首先,如果标题有点模糊,但是这是我能想到的最好的。我的问题: 我有几个任务,每个任务可以有子任务。 创建任务时,它将在recursiveParentUpdater()方法中设置DB中的finished_at字段。出于某种原因,我保存后的新任务是他自己的父(但不在数据库中,仍为NULL)。
例如,
$task = new Task;
// set my properties
$task->save(); // let's say ID = 5
$task->parent->parent->parent->...->id === 5 // I have no idea why this happens
然后,$ task-> recursiveParentUpdater()使用$ this-> parent获取自身并将其全部拧紧。 只有在创建新任务时才会发生这种情况,当删除不再有$任务给父母时。
它全部用于正常工作(本地和共享主机),2天后未触及它我遇到过这个问题(只在共享主机上,本地仍然没有问题)。 我的Debian机器仍在运行PHP5.6,共享主机支持5.6和7,但它不会改变。
我的数据库架构被更新(增加了 '显示创建表的任务')
Schema::create('tasks', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->string('description')->nullable();
$table->integer('parent_id')->unsigned()->nullable();
$table->integer('user_id')->unsigned()->nullable();
$table->date('deadline_date')->nullable()->default(null);
$table->time('deadline_time')->nullable()->default(null);
$table->datetime('finished_at')->nullable()->default(null);
$table->timestamps();
$table->foreign('parent_id')->references('id')->on('tasks')->onUpdate('cascade')->onDelete('cascade');
$table->foreign('user_id')->references('id')->on('users')->onUpdate('cascade')->onDelete('cascade');
});
or
tasks| CREATE TABLE `tasks` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`title` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`description` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`parent_id` int(10) unsigned DEFAULT NULL,
`user_id` int(10) unsigned DEFAULT NULL,
`deadline_date` date DEFAULT NULL,
`deadline_time` time DEFAULT NULL,
`finished_at` datetime DEFAULT NULL,
`created_at` timestamp NULL DEFAULT NULL,
`updated_at` timestamp NULL DEFAULT NULL,
PRIMARY KEY (`id`),
KEY `tasks_parent_id_foreign` (`parent_id`),
KEY `tasks_user_id_foreign` (`user_id`),
CONSTRAINT `tasks_parent_id_foreign` FOREIGN KEY (`parent_id`) REFERENCES `tasks` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT `tasks_user_id_foreign` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=337 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci |
我的模型(部分是相关)
public function user() {
return $this->belongsTo('App\User');
}
public function children() {
return $this->hasMany('App\Task', 'parent_id', 'id');
}
public function parent() {
return $this->belongsTo('App\Task');
}
public function hasParent() {
return (!is_null($this->parent)) ? true : false;
}
public function hasChildren() {
return (count($this->children) > 0) ? true : false;
}
public function updateParentFinishedStatus() {
function recursiveParentUpdater($task) {
if ($task->hasParent()) {
$task->parent->setFinishedAt(date('d-m-Y H:i:s'));
foreach ($task->parent->children as $child) {
if (!$child->isFinished()) {
$task->parent->setFinishedAt(null);
break;
}
}
$task->parent->save();
if ($task->parent->hasParent()) recursiveParentUpdater($task->parent);
}
}
recursiveParentUpdater($this);
}
我控制器
public function postCreate(Request $request) {
$this->validate($request, [
'title' => 'string|required',
'description' => 'string',
'ptid' => 'integer|exists:tasks,id',
'deadline_date' => 'date|after:yesterday|required_with:deadline_time',
'deadline_time' => 'dateformat:H:i',
]);
$task = new Task;
$task->setTitle($request->get('title'));
$task->setDescription($request->get('description'));
$task->setDeadline($request->get('deadline_date'), $request->get('deadline_time'));
if (!empty($request->get('ptid'))) {
$task->parent()->associate($request->get('ptid'));
}
$task->user()->associate(Auth::user());
$task->save();
$task->updateParentFinishedStatus();
return redirect()->back();
}
public function getDelete(Request $request) {
$this->validate($request, [
'tid' => 'integer|required|exists:tasks,id',
]);
$task = Task::where('id', $request->get('tid'))->where('user_id', Auth::user()->id)->first();
$task->delete();
$task->updateParentFinishedStatus();
return redirect()->back();
}
你应该为你的表作为SQL,而不是提供实际的架构,包括相关的数据,使我们可以尝试重现该问题,但到目前为止,它听起来像是将'parent_id'设置为新创建的任务的'id'。 – Sherif