PHP表单单选按钮

我所要做的就是以下面的编码样式生成一个带有文本输入字段和按钮的表单。文本输入字段工作正常。但是，单选按钮类不是。单选按钮类应该有一个组标题，

addOption

函数应该用单选按钮显示每个选项。当我测试我的代码时，没有标题“Scoops Number of Scoops”，只有一个单选按钮表示“Three Scoops”，而不是“one Scoops”和“Two Scoops”。我做错了什么？这是我的密码：

IceCreamForm.php

：

<?php

require_once 'Form.php';
require_once 'RadioButton.php';
require_once 'TextInput.php';
require_once 'Validator.php';

$form = new Form();

$form -> addInput(new TextInput("First Name: ", "firstName"));
$form -> addInput(new TextInput("Last Name: ", "lastName"));
$form -> addInput(new TextInput("Ice Cream Flavor: ", "iceCreamFlavor"));

$radio = new RadioButton("Number of Scoops: ");
$radio -> addOption("One Scoop", "one");
$radio -> addOption("Two Scoops", "two");
$radio -> addOption("Three Scoops", "three");
$form -> addInput($radio);

echo $form -> generateHTML();

<?php

class Form
{
    const GET = "GET";
    const POST = "POST";
    private $action = "someLocation.php";
    private $inputs = array();
    private $method = "POST";
    public $form = "";
    public $name = "";

    function __construct()
    {

    }

    function addInput(TextInput $input)
    {
        $this -> inputs[] = $input;
    }

    function getAction(): string
    {
        return $this -> action;
    }

    function getMethod(): string
    {
        return $this -> method;
    }

    function setAction(string $action)
    {
        $this -> action = $action;
        return $this;
    }

    function setMethod(string $method)
    {
        $this -> method = $method;
        return $this;
    }

    function set($param, $value)
    {
        $this -> $param = $value;
    }

    function generateHTML(): string
    {
        $this -> form = '<form action="' . $this -> getAction() . '" 
        method="' . $this -> getMethod() . '">';
        foreach ($this -> inputs as $input)
        {
            $this -> form .= $input -> generateHTML();
        }

        $this -> form .= '</form>';

        return $this -> form;
    }
}

<?php

class TextInput
{
    const TYPE = "text";
    private static $REQUIRED = "REQUIRED";
    private $defaultValue;
    private $id;
    private $label;
    private $name;
    private $onNewLine;
    private $required = false;
    private $type;

    function __construct($label = "", $name = "", $defaultValue = "", $id = "", $onNewLine = "", $required = false, $type = self::TYPE)
    {
        $this -> defaultValue = $defaultValue;
        $this -> id = $id;
        $this -> label = $label;
        $this -> name = $name;
        $this -> onNewLine = $onNewLine;
        $this -> required = $required;
        $this -> type = $type;
    }

    public function generateHTML():string
    {
        $req = "";

        if ($this -> required == true)
        {
            $req = self::$REQUIRED;
        }

        return "<label>$this->label</label><input id='$this->id' type='$this->type' name='$this->name' onNewLine='$this->onNewLine' $req/><br/>";
    }
}

<?php

require_once 'TextInput.php';

class RadioButton extends TextInput
{
    const TYPE2 = "radio";
    private $selected = false;
    private $type;

    function __construct($selected = false, $type = self::TYPE2)
    {
        $this -> selected = $selected;
        $this -> type = $type;
    }

    function addOption(string $label, string $value)
    {
        $this -> label = $label;
        $this -> value = $value;
    }

    public function generateHTML():string
    {
        $req = "";

        if ($this -> required == true)
        {
            $req = self::$REQUIRED;
        }

        return "<label>$this->label</label><input id='$this->id' type='$this->type' value='$this->value' onNewLine='$this->onNewLine' $req/><br/>";
    }
}

TextInput.php

：

<?php

require_once 'Form.php';
require_once 'RadioButton.php';
require_once 'TextInput.php';
require_once 'Validator.php';

$form = new Form();

$form -> addInput(new TextInput("First Name: ", "firstName"));
$form -> addInput(new TextInput("Last Name: ", "lastName"));
$form -> addInput(new TextInput("Ice Cream Flavor: ", "iceCreamFlavor"));

$radio = new RadioButton("Number of Scoops: ");
$radio -> addOption("One Scoop", "one");
$radio -> addOption("Two Scoops", "two");
$radio -> addOption("Three Scoops", "three");
$form -> addInput($radio);

echo $form -> generateHTML();

<?php

class Form
{
    const GET = "GET";
    const POST = "POST";
    private $action = "someLocation.php";
    private $inputs = array();
    private $method = "POST";
    public $form = "";
    public $name = "";

    function __construct()
    {

    }

    function addInput(TextInput $input)
    {
        $this -> inputs[] = $input;
    }

    function getAction(): string
    {
        return $this -> action;
    }

    function getMethod(): string
    {
        return $this -> method;
    }

    function setAction(string $action)
    {
        $this -> action = $action;
        return $this;
    }

    function setMethod(string $method)
    {
        $this -> method = $method;
        return $this;
    }

    function set($param, $value)
    {
        $this -> $param = $value;
    }

    function generateHTML(): string
    {
        $this -> form = '<form action="' . $this -> getAction() . '" 
        method="' . $this -> getMethod() . '">';
        foreach ($this -> inputs as $input)
        {
            $this -> form .= $input -> generateHTML();
        }

        $this -> form .= '</form>';

        return $this -> form;
    }
}

<?php

class TextInput
{
    const TYPE = "text";
    private static $REQUIRED = "REQUIRED";
    private $defaultValue;
    private $id;
    private $label;
    private $name;
    private $onNewLine;
    private $required = false;
    private $type;

    function __construct($label = "", $name = "", $defaultValue = "", $id = "", $onNewLine = "", $required = false, $type = self::TYPE)
    {
        $this -> defaultValue = $defaultValue;
        $this -> id = $id;
        $this -> label = $label;
        $this -> name = $name;
        $this -> onNewLine = $onNewLine;
        $this -> required = $required;
        $this -> type = $type;
    }

    public function generateHTML():string
    {
        $req = "";

        if ($this -> required == true)
        {
            $req = self::$REQUIRED;
        }

        return "<label>$this->label</label><input id='$this->id' type='$this->type' name='$this->name' onNewLine='$this->onNewLine' $req/><br/>";
    }
}

<?php

require_once 'TextInput.php';

class RadioButton extends TextInput
{
    const TYPE2 = "radio";
    private $selected = false;
    private $type;

    function __construct($selected = false, $type = self::TYPE2)
    {
        $this -> selected = $selected;
        $this -> type = $type;
    }

    function addOption(string $label, string $value)
    {
        $this -> label = $label;
        $this -> value = $value;
    }

    public function generateHTML():string
    {
        $req = "";

        if ($this -> required == true)
        {
            $req = self::$REQUIRED;
        }

        return "<label>$this->label</label><input id='$this->id' type='$this->type' value='$this->value' onNewLine='$this->onNewLine' $req/><br/>";
    }
}

因为您的

单选按钮

构造函数没有设置标题。仅选择

$和
$类型

...and only one radio button for "Three Scoops" and not for 
"One Scoop" and  "Two Scoops."...

因为您的
addOption
方法会覆盖以前设置的标签和值。尝试将它们添加到数组中

function addOption(string $label, string $value) {
    $this->options[] = [
        'label' => $label,
        'value' => $value,
    ];
}

然后在
生成HTML（）
中

return join('', array_map(function($item) {
    return sprintf('<label>%s</label> <input type="radio" value="%s">', $item['label'], $item['value']);
}, $this->options));

返回连接（“”，数组映射（函数（$item））{
返回sprintf（'%s'，$item['label']，$item['value']）；
}，$this->options））；
谢谢！我理解标题部分，并且能够解决这个问题。我不太理解addOption数组修复程序。这样的代码片段是什么样子的？例如，您自己的
表单
类
addInput（）
方法。您还需要在
generateHTML（）
中迭代它们，因此，我有
函数addOption（string$label，string$value）{$this->label=$label；$this->value=$value；$this->options[]=$label；}
，但我会把
foreach（$this->options as$label）{$this->radiobutton.=$label->generateHTML（）；}
在generatehtml（）方法中？这就是迭代的样子吗？另外，您应该为单选按钮选项使用
name
属性，以免单选按钮脱节。我建议让
RadioButton
构造函数接受一个字符串作为要分配给
$this->name
的名称，使实例变量
TextInput:：$name
受到保护（这样RadioButton就可以使用它），然后在
RadioButton:：generateHtml（）
中的lambda函数中添加
name=“%s”
的值为
$this->name
的sprintf

的额外参数。是的，您应该使用

name

属性。为了简洁起见，我删除了不必要的代码。我还建议使用类似laravel或symfony的框架，而不是自己编写。