我不明白销毁功能在这里是如何工作的?

Question

我正在处理旧的laravel项目，我必须修改现有的项目。所以我现在正在尝试理解代码。该项目位于 laravel 和 yajra 数据表上。我不明白销毁功能是如何工作的？在视图中，没有调用销毁功能，但是当我单击删除按钮时，它仍然在工作。

控制器

public function loadSizes()
{
$sizes = Size::select(['id', 'name', 'code'])->get();
return DataTables::of($sizes)
->addColumn('action', function ($size) {
return '<a href="' . url('/sizes/' . $size->id . '/edit') . '" class="btn btn-default edit_btn_styles" data-toggle="tooltip" data-placement="top" title="Update"><i class="fa fa-wrench" aria-hidden="true"></i></a>
<button type="button" data-id="' . $size->id . '" class="btn btn-default remove-size remove-btn" data-toggle="tooltip" data-placement="top" title="Delete"><i class="fas fa-trash-alt" aria-hidden="true"></i></button>';
})
->rawColumns(['action'])
->make(true);
}
public function destory(Request $request)
{
$result = Size::where('id', $request->input('size_id'))->delete();
if ($result) {
return "SUCCESS";
} else {
return "FAIL";
}
}

视图

@extends('layouts.sidebar')
@section('content')
<div class="row">
<div class="col-sm-12 pad-main">
<div class="row">
<div class="col-md-6">
<h4 class="cat-name"> Size List</h4>
</div>
</div>
<div class="row">
<div class="col-md-12 table-responsive pad-tbl">
<table class="table table-striped" id="size_table">
<thead>
<tr>
<th scope="col"> Name</th>
<th scope="col"> Code</th>
<th scope="col"> Action</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</div>
</div>
</div>
@if (Session::has('action'))
@if (Session::get('action') == "create")
@if (Session::has('status_success'))
<script > showAlert("SUCCESS", "Size creation successful");</script >
@elseif(Session::has('status_error')))
<script > showAlert("FAIL", "Size creation fail");</script >
@endif
@elseif(Session::get('action') == "update")
@if (Session::has('status_success'))
<script > showAlert("SUCCESS", "Size update successful");</script >
@elseif(Session::has('status_error')))
<script > showAlert("FAIL", "Size update fail");</script >
@endif
@endif
@endif    
<script>
$(document).ready(function () {
$('#size_table').DataTable({
language: {
searchPlaceholder: "Search records"
},
"columnDefs": [
{"className": "dt-center", "targets": "_all"}
],
processing: true,
serverSide: true,
ajax: '{!! url(' / load - sizes') !!}',
columns: [
{data: 'name', name: 'name'},
{data: 'code', name: 'code'},
{data: 'action', name: 'action'},
]
});
});
$(document.body).on("click", ".remove-size", function () {
var size_id = $(this).data('id');
showConfirm("DELETE", "Do you want to delete this Size ?", "deleteSize(" + size_id + ")");
});
function deleteSize(id) {
$.ajax({
type: 'get',
url: '{!! url('delete-size') !!}',
data: {size_id: id},
success: function (data) {
if (data == "SUCCESS") {
$('[data-id="' + id + '"]').closest('tr').remove();
showAlert("SUCCESS", "Delete Size successful");
}
}, error: function (data) {
showAlert("FAIL", "Delete Size fail");
}
});
}
</script>
@endsection

Answer 1

在刀片视图的底部有一个 AJAXfunction destory(id)。 该 AJAX 正在向大小为 ID 的 URLdelete-size发送 GET 请求。

现在，如果您在web.php文件中搜索该 URL(位置 -routes/web.php(，您会发现如下所示的内容：

Route::get('delete-size', 'SizeController@destory');

此路由会将大小 ID 发送到您的destory函数，该函数又在数据库中搜索大小并将其删除。

Answer 2

//  Controller

public function destroy($id)
{
Tag::find($id)->delete();
Toastr::success('Tag Successfully Deleted',"Success");
return redirect()->back();
}
//  Route
Route::group(['as'=>'admin.','prefix'=>'admin','namespace'=>'Admin','middleware'=>['auth','admin']], function (){
Route::resource('tag','TagController');
});
//  HTML file
<form id="delete-form-{{ $tag->id }}" action="{{ route('admin.tag.destroy',$tag->id) }}" method="POST" style="display: none;">
@csrf
@method('DELETE')
</form>