Laravel-Foreach循环-显示关于结果类型的特定消息 [英] Laravel - Foreach loop - Show a specific message for types of result

问题描述

所以我有一个包含所有消息的消息表.我希望固定的消息位于顶部，而普通消息则紧随其后.我可以使用查询中的orderBy()方法正常执行此操作.

So I have a messages table with all messages. I want pinned messages to be at top and normal ones to follow after. I have been able to do this normally with the orderBy() method in my query.

但是，我想为所有固定消息显示一些特定的消息.我想在固定消息的顶部有一个标头，在普通消息的顶部有一个标头，以使用户知道固定消息和普通消息在那里.

However, I want to display some specific messages for all my pinned messages. I would like to have a header at the top of the pinned messages and a header at the top of the normal messages to let users know that pinned and normal messages are there.

示例:

我的查询:

$rows = Messages::where('active', true)->orderBy('pinned', 'desc')->get();

我的观点

@foreach ($rows as $row)
    {{ $row->message }}
@endforeach

我所看到的

Message text 3
Message text 1
Message text 2

我在数据库的列中有一些带有固定"的消息.因此，我希望固定的内容在"DESCRIPTIONS"的顶部显示.像这样:

I have a few messages with "pinned" in the column in database. So I want the pinned ones to show at the top WITH DESCRIPTIONS. Something like this:

Pinned
----------
Message text 3
----------
Normal
----------
Message text 1
Message text 2

我已经尝试过orderBy()，并且在将其从固定到普通的顺序上都可以正常工作，但是我无法显示固定"和普通"消息.我该怎么办?

I have tried orderBy() and it's working pretty good, in terms of ordering it from pinned to normal, but I can't get it to show the "Pinned" and "Normal" message. How can I do this?

推荐答案

尝试类似的方法(将1/0更改为true/false或您使用的任何方法):

Try something like this (change 1/0 to true/false or whatever you use):

在控制器中:

$pinned = $rows->where('pinned', 1);
$normal = $rows->where('pinned', 0);

在视图中:

@if(count($pinned) > 0)
    Pinned

    @foreach ($pinned as $row)
        {{ $row->message }}
    @endforeach
@endif

@if(count($normal) > 0)
    Normal

    @foreach ($normal as $row)
        {{ $row->message }}
    @endforeach
@endif

如果真正的@foreach部分很大，请使用部分和@each 而不是@foreach以避免代码重复.

If real @foreach part is big, use partial and @each instead of @foreach to avoid code duplication.

替代

@foreach ($rows as $row)
    @if ($row->pinned === 1 && !isset($pinnedShown))
        Pinned
        {{ $pinnedShown = true }}
    @endif

    @if ($row->pinned === 0 && !isset($normalShown))
        Normal
        {{ $normalShown = true }}
    @endif

    {{ $row->message }}
@endforeach

替代方案

不太可读，但是如果您只需要短代码，请使用以下代码:

Not very readable, but if you just need short code, use something like this:

@foreach ($rows as $row)
    <?php !($row->pinned == 1 && !isset($pin)) ? : $pin = call_user_func(function(){ echo 'Pinned'; return 1; });
          !($row->pinned == 0 && !isset($nor)) ? : $nor = call_user_func(function(){ echo 'Normal'; return 1; }); ?>
    {{ $row->message }}
@endforeach

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