tapestry - 用 Tapestry 创建一个简单的 int 选择模型

Question

我需要选择由选项 1、2、3 ... 250 组成。

<p>
<t:label for="quantity2" style="width:40%" />
<t:select  t:id="quantity2" t:model="literal:0,1,2,3,4,5,6,7" /> 
</p> 

此代码有效，但我希望数字达到 250！

谢谢你，对不起我的英语不好。

Answer 1

来自选择组件的文档“当模型参数是字符串时，它以逗号分隔。当模型参数是字符串列表时，每个元素都被认为是一个选择选项。”

所以，我建议你使用一个字符串列表：

TML

<t:select t:id="quantity2" value="selectedQuantity2" t:model="quantities" />

爪哇

public List<String> getQuantities() {
    // create a list of strings from "1" to "250"
}

Answer 2

Change your select do this:

<t:select t:id="quantity2" value="selectedQuantity2" t:model="Quantity2Model" />

In your page class, do this

@Property
private SelectModel quantity2Model;

@Inject
SelectModelFactory smf;

void setupRender()
{
    List<int> values = new ArrayList<int>();
    for (int i = 0; i <= 250; ++i)
    {
        values.Add(i);
    }
    quantity2Model = smf.create(values, "name");
}

Warning: I've never even heard of tapestry until I read your question, and I am not proficient in Java, so this is just based on my research from here. Good luck!