从Laravel中的多选表单中获取选择的值

本文介绍了从Laravel中的多选表单中获取选择的值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

要生成默认情况下选中的项目的下拉列表，请执行以下操作:

echo Form::select('size', array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), 'S');

因此，我通过以下方式生成了一个下拉列表，该下拉列表默认情况下选择了多个项目:

echo Form::select('size', array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), array('S', 'M'), array('multiple'));

但是如何获得多个选择的值?

Input::get('size')仅返回最后选择的字符串.

解决方案

首先，如果要默认选择多个项目，则必须将值数组作为第3个参数，而不是简单的值.

示例:

Form::select('size', array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), array('S', 'M'), array('multiple'));

应显示选择了S和M的选择.

对于第二点，您应该尝试使用类似于size[]的名称而不是size，这可能可以解决问题(因为您发布的select不是一个简单的值，而是一个值数组)

For generating a drop-down list with an item selected by default, the following is done:

echo Form::select('size', array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), 'S');

So I generated a drop-down list that has more than one item selected by default, in the following way:

echo Form::select('size', array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), array('S', 'M'), array('multiple'));

But how do I get the more than one selected values?

Input::get('size') returns only the last selected string.

解决方案

First, if you want to have multiple item selected by default, you have to give an array of values as 3rd parameter, not a simple value.

Exemple:

Form::select('size', array('L' => 'Large', 'M' => 'Medium', 'S' => 'Small'), array('S', 'M'), array('multiple'));

should show the select with S and M selected.

For the second point, you should try to give a name like size[] instead of size, it could be solve the problem (because your posted select is not a simple value, its an array of values)