如何使用按钮删除特定的数组项？

Question

因此，我有一个foreach循环，用于显示所有产品和产品信息。我希望每个项目都有一个删除按钮。

{
    "$schema" : "https://json-schema.org/schema#",
    "type" : "object",
    "properties" : 
    {
        "messages" :
        {
            "type" : "array",
            "items" : 
            {
                "properties" : 
                {
                    "name" : 
                    {
                        "type" : "string"
                    },
                    "id" : 
                    {
                        "type" : "string"
                    },
                    "signals" : 
                    {
                        "type" : "object"
                    },

                    "properties" :
                    {
                        "start_bit" : 
                        {
                            "type" : "object",
                            "properties" :
                            {
                                "name" :
                                {
                                    "type" : "string"
                                },
                                "bit_length" :
                                {
                                    "type" : "string"
                                },
                                "factor" : 
                                {
                                    "type" : "string"
                                },
                                "offset" : 
                                {
                                    "type" : "string"
                                }
                            },
                            "required" : ["name", "bit_length", "factor", "offset"]
                        }
                    }
                },
                "required": ["name", "id", "signals"]
            }
        }
    }
}

Answer 1

您可以将其附加到您的foreach循环中：

 public abstract class PivotRequestFactory
 {
    public abstract PivotRequest GetPivotRequest();
 }

public class ConcretePivotRequestFactory : PivotRequestFactory
{

    public ConcretePivotRequestFactory()
    {

    }
    public override PivotRequest GetPivotRequest()
    {
        try
        {

            return new PivotRequest();
        }
        catch (Exception ex)
        {

            throw;
        }
    }
}

private PivotRequest GetPivotRequest(string DataSetName)
    {
        PivotRequestFactory factory = null;
        try
        {
            switch (DataSetName)
            {
                case DatasetNames.Default:
                    if (IsTrue) { factory = new ConcretePivotRequestFactory(); }
                    else { factory = new ConcretePivotRequestFactory2); }
                    break;
                case DatasetNames.SoSo:
                    if (IsTrue) { factory = new ConcretePivotRequestFactory3(); }
                    else { factory = new ConcretePivotRequestFactory4(); }
                    break;
                default:
                    break;
            }
        }
        catch (Exception)
        {

            throw;
        }
        return factory.GetPivotRequest();
    }

添加以上行后，您必须将要删除的产品ID传递到echo "<a href='YOUR_DELETE_PAGE.php?delete_id={$id}'>Delete</a>" 中。

最后，在您的$_SESSION['cart']中，您可以执行以下操作：

YOUR_DELETE_PAGE.php