Question

我要做的就是生成一个带有文本输入字段和下面编码风格的按钮的表单。一切都运行正常，但我对如何生成提交按钮感到困惑，并在提交后，将文本字段中的数据插入到数据库中。如何使用下面的编码样式正确生成提交按钮？

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();

form.php的：

<?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;
    }
}

TextInput.php：

<?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/>";
        }
    }

Answer 1

您必须进行以下更改：

更改TextInput类的generateHTML()方法以添加defaultValue。

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='$this->onNewLine' value='$this -> defaultValue' $req/><br/>";
}

创建提交按钮，如下所示：

$form -> addInput(new TextInput("", "submit_btn","Submit Button Name","submit_btn","",false,"submit"));

将数据添加表单操作和方法保存为

echo $form -> setAction("You post url where you want to save data");
echo $form -> setMethod("POST");
echo $form -> generateHTML();

PHP表单提交按钮/提交到数据库

1 个答案: