am在编辑页面中，我想插入价格，然后插入库存，然后在过帐之前，总价将在总价单元格中自动计算，任何正文都有帮助吗？
**
控制器页面是
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adminController.php
<?php
namespace AppHttpControllers;
use IlluminateHttpRequest;
use DB;
use AppUser;
use AppProduct;
class adminController extends Controller
{
public function users()
{
$users=User::all();
$users=User::paginate(5);
return view('adminVeiw.user', compact('users'));
}
public function products()
{
$products=Product::all();
$products=Product::paginate(5);
return view('adminVeiw.product', compact('products'));
}
/////////////////////////////////Users//////////////////////////////////////////////
public function addUser(Request $request){
if($request->isMethod('post')){
$this->validate($request,[
'id' => 'required | max:5 |unique:users' ,
/// 'price' => 'required |min:2 |max:8'
]);
$users = new User();
$users->id=$request->input('id');
$users->name=$request->input('name');
$users->email=$request->input('email');
$users->password=$request->input('password');
$users->phone=$request->input('phone');
$users->save();
}
return view('adminVeiw.userAdd');
}
public function EditUser(Request $request,$id){
if($request->isMethod('post')){
$users= User::find($id);
$users->id=$request->input('id');
$users->name=$request->input('name');
$users->email=$request->input('email');
$users->password=$request->input('password');
$users->phone=$request->input('phone');
$users->save();
return redirect("users");
}else{
$users=User::find($id);
$arr=Array('users'=>$users);
return view('adminVeiw.userEdit',$arr);
}
}
///////////////////////////////Product////////////////////////////////////////////////
public function AddProduct(Request $request){
if($request->isMethod('post')){
$this->validate($request,[
'id' => 'required | max:5 |unique:products' ,
/// 'price' => 'required |min:2 |max:8'
]);
$products = new Product();
$products->id=$request->input('id');
$products->name=$request->input('name');
$products->barcode=$request->input('barcode');
$products->price=$request->input('price');
$products->instock=$request->input('instock');
$products->tax=$request->input('tax');
$products->taxval=$request->input('taxval');
$products->discount=$request->input('discount');
$products->discountval=$request->input('discountval');
$products->description=$request->input('description');
$products->totalPrice=$request->input('totalPrice');
$products->file=$request->input('file');
$products->save();
}
return view('adminVeiw.productAdd');
}
public function EditProduct(Request $request,$id){
if($request->isMethod('post')){
$products= Product::find($id);
$products->id=$request->input('id');
$products->name=$request->input('name');
$products->barcode=$request->input('barcode');
$products->price=$request->input('price');
$products->instock=$request->input('instock');
$products->tax=$request->input('tax');
$products->taxval=$request->input('taxval');
$products->discount=$request->input('discount');
$products->discountval=$request->input('discountval');
$products->description=$request->input('description');
$products->totalPrice=$request->input('totalPrice') ;
$products->file=$request->input('file');
$products->save();
return redirect("products");
// return view('adminVeiw.productEdit');
}else{
$products=Product::find($id);
$arr=Array('products'=>$products);
return view('adminVeiw.productEdit',$arr);
}
}
///////////////////////////////////////////search function
public function searchproduct(Request $request)
{
$products = $request->get('products');
$products = DB::table('products')->where('name', 'like', '%'.$products.'%')->paginate(5);
return view('adminVeiw.product', ['products' => $products]);
}
///////////////////////////////////////////////////////////////////////
}
?>
productEditblade.php
@extends('layouts.app')
@section('content')
<div class="container">
<div class="card " style="width: 50rem;">
<div class="card-header ">
<h1> EDIT PRODUCT </h1>
</div>
<div class="card-body">
<form action="/productEdit/{{$products->id}}" method="POST">
{{ csrf_field() }}
<div class="form-group{{$errors -> has('id') ? 'has-error' : ''}}">
<h5>ID</h5>
<input type="lable" name="id" value="{{$products->id}}" class="form-control" placeholder="ID" />
</div>
</br>
<div class="form-group{{$errors -> has('barcode') ? 'has-error' : ''}}">
<h5>BARCODE</h5>
<input type="text" name="barcode" value="{{$products->barcode}}" class="form-control" placeholder="Barcode" />
</div>
</br>
<div class="form-group{{$errors -> has('name') ? 'has-error' : ''}}">
<h5>NAME</h5>
<input type="text" name="name" value="{{$products->name}}" class="form-control" placeholder="name" />
</div>
</br>
<div class="form-group{{$errors -> has('description') ? 'has-error' : ''}}">
<h5>DESCRIPTION</h5>
<input type="text" name="description" value="{{$products->description}}" class="form-control" placeholder="Description" />
</div>
</br>
<div class="form-group{{$errors -> has('file') ? 'has-error' : ''}}">
<h5>FILE</h5>
<input type="text" name="file" value="{{$products->file}}" class="form-control" placeholder="IMG/URL" />
</div>
</br>
<div class="form-group{{$errors -> has('instock') ? 'has-error' : ''}}">
<h5>IN STOCK</h5>
<input type="text" name="instock" value="{{$products->instock}}" class="form-control" placeholder="In Stock" />
</div>
</br>
<div class="form-group{{$errors -> has('price') ? 'has-error' : ''}}">
<h5>PRICE</h5>
<input type="text" name="price" value="{{$products->price}}" class="form-control" placeholder="PRICE" />
</div>
</br>
<div class="form-group{{$errors -> has('discount') ? 'has-error' : ''}}">
<h5>DISCOUNT</h5>
<input type="text" name="discount" value="{{$products->discount}}" class="form-control" placeholder="Discount" />
</div>
</br>
<div class="form-group{{$errors -> has('discountval') ? 'has-error' : ''}}">
<h5>DISCOUNT VALUE</h5>
<input type="text" name="discountval" value="{{$products->discountval}}" class="form-control" placeholder="Discount Value" />
</div>
</br>
<div class="form-group{{$errors -> has('tax') ? 'has-error' : ''}}">
<h5>TAXES</h5>
<input type="text" name="tax" value="{{$products->tax}}" class="form-control" placeholder="Taxes" />
</div>
</br>
<div class="form-group{{$errors -> has('taxval') ? 'has-error' : ''}}">
<h5>TAXES VALUE</h5>
<input type="text" name="taxval" value="{{$products->taxval}}" class="form-control" placeholder="Taxes Value" />
</div>
</br>
<div class="form-group{{$errors -> has('totalPrice') ? 'has-error' : ''}}">
<h5>TOTAL PRICE</h5>
<input type="text" name="totalPrice" value=" {{$products->totalPrice = $products->price + $products->instock }}" class="form-control" placeholder="Total Price" />
</div>
</br>
<a class="btn btn-warning" href="/products"> Returne without Saving </a>
<input class="btn btn-success" type="submit" value="Confirm changes">
</form>
</div>
</div>
</div>
@endsection('content')
这是路由web.php
Route::get('/products', 'adminController@products');
Route::get('productAdd/{id}',function ($id){
$products=Product::find($id);
$products->delete();
return redirect("products");
});
Route::post('productAdd',"adminController@AddProduct");
Route::get('productAdd',"adminController@AddProduct");
Route::get('productEdit/{id}',"adminController@EditProduct");
Route::post('productEdit/{id}',"adminController@EditProduct");
即使是初学者也可以提出任何想法
一种方法：创建一个新的控制器
product.blade.php的作业，但带有按钮(保存确认等(
@extends('layouts.app')
@section('content')
<div class="row justify-content-center">
<div class="col-md-12">
<div class="card">
<div class="card-header">
<h3> <p style="text-align:center;">Products</p> </h3>
</div>
</br>
<div class="row justify-content-center">
<h4>Veiw as a seller</h4>
</div>
<!---the form ------------------------->
<div class="card-body">
<a class="btn btn-outline-secondary btn-lg btn-block" href="/home">Go Home </a>
</div>
<div class="card-body">
<a class="btn btn-outline-success btn-lg btn-block" href="/productAdd">Add new product </a>
</div>
<!---search icon------------------------------>
<form action="/search" method="get">
<div class="input-group">
<input type="search" name="products" class="form-control">
<span class="input-group-prepend">
<button type="submit" class="btn btn-primary">Search</button>
</span>
</div>
</form>
<table class="table table-striped">
<thead>
<tr>
<th scope="col">ID</th>
<th scope="col">Barcode</th>
<th scope="col">Name</th>
<th scope="col">Description</th>
<th scope="col">Image</th>
<th scope="col">In Stock</th>
<th scope="col">Unit Price</th>
<th scope="col">Unit Discount</th>
<th scope="col">Unit Discount Value</th>
<th scope="col">Tax</th>
<th scope="col">Tax Value</th>
<th scope="col">Total Price</th>
<th scope="col">Save</th>
<th scope="col">Delete</th>
<th scope="col">Edit</th>
</tr>
</thead>
<tbody>
@foreach($products as $c)
<tr>
<th scope="row">{{$c->id}}</th>
<td> {{$c->barcode}}</td>
<td> {{$c->name}}</td>
<td> {{$c->description}}</td>
<td><img src="{{$c->file}}" alt="" style="width: 7rem;"></td>
<td> {{$c->instock}}</td>
<td>{{$c->price}}</td>
<td> {{$c->discount}}</td>
<td> {{$c->discountval}}</td>
<td> {{$c->tax}}</td>
<td> {{$c->taxval}}</td>
<td> {{$c->totalPrice = $c->price + $c->instock }} </td>
<td>
<a class="btn btn-outline-success" href="productSave/{{$c->id}}">save</a>
</td>
<td>
<a class="btn btn-outline-primary" href="productEdit/{{$c->id}}">EDIT</a>
</td>
<td>
<a class="btn btn-outline-danger" href="productAdd/{{$c->id}}">Delete</a>
</td>
</tr>
@endforeach
</tbody>
</table>
<div class="paginations col-lg-12">
{!! $products->render() !!}
</div>
</div>
</div>
</div>
</div>
</div>
@endsection
这将做与edit.blade.php相同的事情，但现在它将在获取之前检查值，然后这次提交将返回，什么都不做，但你得到了的想法
> @extends('layouts.app')
> @section('content')
>
> <div class="container ">
> <div class="card " style="width: 50rem;">
> <div class="card-header ">
> <h1>Are you shure you want to save ?</h1>
> </div>
> <div class="card-body ">
>
> <form action="/productSave/{{$products->id}}" method="POST">
> {{ csrf_field() }}
>
>
> <a class="btn btn-warning" href="/productSaved"> NO </a>
>
> <input class="btn btn-success" type="submit" value="yes" >
> <div class="form-group{{$errors -> has('id') ? 'has-error' : ''}}">
>
>
> <h5>ID</h5>
> <input type="lable" name="id" value="{{$products->id}}" class="form-control" placeholder="ID" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('barcode') ? 'has-error' : ''}}">
> <h5>BARCODE</h5>
> <input type="text" name="barcode" value="{{$products->barcode}}" class="form-control" placeholder="Barcode" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('name') ? 'has-error' : ''}}">
> <h5>NAME</h5>
> <input type="text" name="name" value="{{$products->name}}" class="form-control" placeholder="name" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('description') ? 'has-error' : ''}}">
> <h5>DESCRIPTION</h5>
> <input type="text" name="description" value="{{$products->description}}" class="form-control"
> placeholder="Description" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('file') ? 'has-error' : ''}}">
> <h5>FILE</h5>
> <input type="text" name="file" value="{{$products->file}}" class="form-control" placeholder="IMG/URL" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('instock') ? 'has-error' : ''}}">
> <h5>IN STOCK</h5>
> <input type="text" name="instock" value="{{$products->instock}}" class="form-control" placeholder="In Stock" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('price') ? 'has-error' : ''}}">
> <h5>PRICE</h5>
> <input type="text" name="price" value="{{$products->price}}" class="form-control" placeholder="PRICE" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('discount') ? 'has-error' : ''}}">
> <h5>DISCOUNT</h5>
> <input type="text" name="discount" value="{{$products->discount}}" class="form-control" placeholder="Discount" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('discountval') ? 'has-error' : ''}}">
> <h5>DISCOUNT VALUE</h5>
> <input type="text" name="discountval" value="{{$products->discountval}}" class="form-control"
> placeholder="Discount Value" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('tax') ? 'has-error' : ''}}">
> <h5>TAXES</h5>
> <input type="text" name="tax" value="{{$products->tax}}" class="form-control" placeholder="Taxes" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('taxval') ? 'has-error' : ''}}">
> <h5>TAXES VALUE</h5>
> <input type="text" name="taxval" value="{{$products->taxval}}" class="form-control" placeholder="Taxes Value" />
> </div>
> </br>
> <div class="form-group{{$errors -> has('totalPrice') ? 'has-error' : ''}}">
> <h5>TOTAL PRICE</h5>
> <input type="text" name="totalPrice" value=" {{$products->totalPrice = $products->price + $products->instock }}"
> class="form-control" placeholder="Total Price" /> </form>
> </div>
> </br> </div> </div>
>
> </div>
>
>
> @endsection('content')
顺便说一句，新控制器将类似于
savedController.php:
<?php
namespace AppHttpControllers;
use IlluminateHttpRequest;
use DB;
use AppUser;
use AppProduct;
class savedController extends Controller
{
public function products()
{
$products=Product::all();
$products=Product::paginate(5);
return view('adminVeiw.productSaved', compact('products'));
}
/////////////////////////////////save editing ///////////////////////////
public function EditProduct(Request $request,$id){
if($request->isMethod('post')){
$products= Product::find($id);
$products->id=$request->input('id');
$products->name=$request->input('name');
$products->barcode=$request->input('barcode');
$products->price=$request->input('price');
$products->instock=$request->input('instock');
$products->tax=$request->input('tax');
$products->taxval=$request->input('taxval');
$products->discount=$request->input('discount');
$products->discountval=$request->input('discountval');
$products->description=$request->input('description');
$products->totalPrice=$request->input('totalPrice') ;
$products->file=$request->input('file');
$products->save();
return redirect("productSaved");
}else{
$products=Product::find($id);
$arr=Array('products'=>$products);
return view('adminVeiw.productSave',$arr);
}
}
}