Question

我想展示我刚刚上传的图片，只展示给已上传的图片。例如，用户表包含jack，Emily和John，所以如果jack要上传文件，图像将直接显示在他下面，但我不知道该怎么做？

这就是现在的样子：

控制器:(我如何存储图像）

  import UIKit
  import CoreData

  class ItemDetailsVC: UIViewController, UIPickerViewDelegate,          UIPickerViewDataSource  {

@IBOutlet weak var storePicker: UIPickerView!
@IBOutlet weak var titleField: CustomTextField!
@IBOutlet weak var priceField: CustomTextField!
@IBOutlet weak var detailsField: CustomTextField!

var stores = [Store]()


override func viewDidLoad() {
    super.viewDidLoad()

    storePicker.delegate = self
    storePicker.dataSource = self



func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {

    let store = stores[row]
    return store.name
}

func numberOfComponents(in pickerView: UIPickerView) -> Int {

    return 1
}

func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {

    return stores.count
}

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {

    // update
}

func getStores() {
    let fetchRequest: NSFetchRequest<Store> = Store.fetchRequest()

    do {
        self.stores = try context.fetch(fetchRequest)
        self.storePicker.reloadAllComponents()

    } catch {
        // some code
    }

}

@IBAction func savePressed(_ sender: UIButton) {

    let item = Item(context: context)

    if let title = titleField.text {
        item.title = title
    }

    if let price = priceField.text {
        item.price = (price as NSString).doubleValue
    }

    if let details = detailsField.text {
        item.details = details
    }

   item.toStore = stores[storePicker.selectedRow(inComponent: 0)] error:    cannot assign value of type 'Store' to value of type NSSet?

}

view.blade.php

public function store1(Request $request){

   $this->validate($request, [
        'file' => 'required|image|mimes:jpeg,png,jpg,gif,svg|max:2048',
    ]);

   if ($request->hasFile('file')) {
        $image = $request->file('file');
        $name = $image->getClientOriginalName();
        $size = $image->getClientSize();
        $destinationPath = public_path('/images');
        $image->move($destinationPath, $name);

        $userImage = new UserImage;
        $userImage->name = $name;
        $userImage->size = $size;
        //dd($userImage);
        $userImage->save();
}

我看到人们在他们的blade.php中使用了这个，但我不知道$ model是什么：

 @foreach ($data as $object)
    <b>Name: </b>{{ $object->name }}<br><br>
@endforeach

Upload.blade.php（这是我的上传页面，用户将上传他们的图片）

    <img src="{{ asset('public/images/' . $model->image) }}">

Answer 1

有很多方法可以做到。

您可以使用Eloquent或使用Laravel的query builder。

在您的控制器中，您应该获得用户上传的所有图像。

Query builder方法：

//don't forget the namespace
`use DB;`

//in your function write this.
$images = DB::table('user_images')
        ->join('users', 'users.id', '=', 'user_images.user_id')
        ->where('users.id', '=', $id) 
        ->get();

//use dd($images) to verify that the variable $images has data

//send $images in your view

在你的视图中

写一个foreach循环，如下所示：

@foreach($images as $image)
    <img src="{{ asset('public/images/' . $image->name ) }}"> 
@endforeach

无法从公用文件夹laravel打印出图像

1 个答案: