laravel htmlspecialchars() 期望参数 1 是字符串，给定数组
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htmlspecialchars() expects parameter 1 to be string, array given
提问by lewis4u
I have a form and if i submit the form with all the right data everything goes perfectly fine... but if I intentionally make any flaw
我有一个表格，如果我提交包含所有正确数据的表格，一切都会很好……但如果我故意制造任何缺陷
(validation for example 'title' => 'required|min:2')
（例如验证'title' => 'required|min:2'）
and I put only one character for title or if I miss any required field I get this error:
我只输入一个字符作为标题，或者如果我错过了任何必填字段，我会收到此错误：
htmlspecialchars() expects parameter 1 to be string, array given
I have figured out that the problem is with this select box
我发现问题出在这个选择框上
{!! Form::select('item[0][]', $items, null, ['class' => 'form-control', 'required']) !!}
and I even tried to use a normal select box without form helper {!! !!}
我什至尝试使用没有表单助手的普通选择框 {!! !!}
But I still get the same error!
但我仍然得到同样的错误！
So the problem is somewhere with validation when there is a nested array....is there a way to fix this?
因此，当存在嵌套数组时，问题出在验证的某个地方……有没有办法解决这个问题？
回答by lewis4u
OK I finally have an answer for this problem....it seems like something has changed in Laravel 5.3 and if you want to have a name with array like this
好的，我终于有了这个问题的答案......似乎在 Laravel 5.3 中发生了一些变化，如果你想要一个像这样的数组名称
{!! Form::label('title', '* Eventname: ', ['class' => 'control-label']) !!}
{!! Form::text('title[]', null, ['class' => 'form-control', 'required') !!}
You must put [0] something in brackets 'indices' like this:
您必须像这样将 [0] 放在括号“索引”中：
{!! Form::text('title[0]', null, ['class' => 'form-control', 'required') !!}
and then in validation use
然后在验证中使用
title.*
标题。*
for rule
为规则
UPDATE
更新
Because i use dynamic form that can be expanded and new form fields added (optionally) i needed to put [] array notation for a name but actually if you already have hard coded many fields with the same name like item[] you don't have to put [0] indices inside. The validation will work for them.
因为我使用可以扩展的动态表单并添加了新的表单字段（可选）我需要为名称放置 [] 数组符号，但实际上如果您已经硬编码了许多具有相同名称的字段，例如 item[] 您不需要必须把 [0] 索引里面。验证对他们有用。
The problem comes only if you have a single input field and you put [] array notation along the name for example 'item[]'
仅当您有一个输入字段并且在名称中放置 [] 数组符号时才会出现问题，例如 'item[]'
this will trigger the error if any validation rule is broken...
如果任何验证规则被破坏，这将触发错误......
