如何验证 Laravel PHP 中的下拉列表？
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How do I validate a drop down list in Laravel PHP?
提问by zack_falcon
The Situation:
情况：
Under models, I've a user.phpwhich handles all validation regarding adding a user to a website.
在模型下，我有一个user.php处理关于将用户添加到网站的所有验证。
This is (part of) the code:
这是（部分）代码：
public static $add_rules = array(
'last_name' => 'required',
'first_name' => 'required',
'email' => 'required|unique:users,email',
'username' => 'required|alpha_num|min: 5|unique:users,username',
'password' => 'required|min: 4|same:password_confirmation',
'password_confirmation' => 'required',
'user_role' => 'required|not_in:-- Choose User Type --'
);
user_roleis the ID of the dropdown list, seen here:
user_role是下拉列表的 ID，见此处：
<select name="user_type_id" class="form-control" id="user_role">
<option value="0">-- Choose User Type --</option>
@if(Session::get("user_type") == "superuser")
{
@foreach($user_types as $ut)
<option value="{{$ut['id']}}">
{{ ucwords($ut["user_type"]) }}
</option>
@endforeach
}
@else{
<option value="Regular">Regular</option>
}@endif
</select>
Basically, what happens up there is that the drop down list is filled with user types, whatever they are. But it always has the first 'option' of -- Choose User Type --.
基本上，上面发生的事情是下拉列表充满了用户类型，无论它们是什么。但它总是有第一个“选项” -- Choose User Type --。
The Problem:
问题：
Problem is, the user can go with that option and add a user. I have a javascript code that blocks this and outputs an error message in a pop-up window, but it's ugly, and not consistent with the rest of the website's error messages.
问题是，用户可以使用该选项并添加用户。我有一个 javascript 代码可以阻止它并在弹出窗口中输出错误消息，但它很丑陋，并且与网站的其余错误消息不一致。
So I added it to the rules. It needs to be validated such that it will only accept anything other than the default -- Choose User Type --option.
所以我把它添加到规则中。它需要经过验证，以便它只接受默认-- Choose User Type --选项以外的任何内容。
What I Tried:
我试过的：
not_indid not work, unfortunately.
not_in没有工作，不幸的是。
Can I get some help on this?
我能得到一些帮助吗？
Thanks.
谢谢。
采纳答案by CleverCookie
You have your select named "user_type_id" but you are trying to validate a field named "user_role"
您的选择名为“user_type_id”，但您正在尝试验证名为“user_role”的字段
回答by Kemal Fadillah
You're not using not_inthe right way. You're supposed to pass in the values that are not allowed, not the representation of those values.
你没有使用not_in正确的方法。您应该传入不允许的值，而不是这些值的表示。
'user_role' => 'required|not_in:0'
回答by mangonights
I think this situation calls for using: Validator::extend()
我认为这种情况需要使用：Validator::extend()
http://laravel.com/docs/validation#custom-validation-rules
http://laravel.com/docs/validation#custom-validation-rules
This would probably be a handy gist. Make a rule that validates whatever string the coder provides.
这可能是一个方便的要点。制定一个规则来验证编码器提供的任何字符串。
