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在 Laravel 6 中，从一系列的文件列表中，取出不重复的特定目录列表

由永夜 · 2023/08/11

1、现在表中的记录。如图1

现在表中的记录

图1

2、查询出文件列表的实现如下

$themeAssets = ThemeAsset::select('asset_key')->where('theme_id', '9994a913-4383-423c-993e-21acde47dbe3')->where('category', ThemeAsset::CATEGORY_MIGRATION)->get();

Illuminate\Database\Eloquent\Collection Object
(
    [items:protected] => Array
        (
            [0] => Modules\ThemeStoreDb\Models\ThemeAsset Object
                (
                    [forceDeleteVersion:protected] => 
                    [table:protected] => theme_asset2
                    [connection:protected] => mysql
                    [primaryKey:protected] => id
                    [keyType:protected] => int
                    [incrementing] => 1
                    [with:protected] => Array
                        (
                        )
 
                    [withCount:protected] => Array
                        (
                        )
 
                    [perPage:protected] => 15
                    [exists] => 1
                    [wasRecentlyCreated] => 
                    [attributes:protected] => Array
                        (
                            [asset_key] => migrations/migrate_cart.blade.php
                        )
 
                    [original:protected] => Array
                        (
                            [asset_key] => migrations/migrate_cart.blade.php
                        )
 
                    [changes:protected] => Array
                        (
                        )
 
                    [casts:protected] => Array
                        (
                        )
 
                    [dates:protected] => Array
                        (
                        )
 
                    [dateFormat:protected] => 
                    [appends:protected] => Array
                        (
                            [0] => created_at
                            [1] => updated_at
                        )
 
                    [dispatchesEvents:protected] => Array
                        (
                        )
 
                    [observables:protected] => Array
                        (
                        )
 
                    [relations:protected] => Array
                        (
                        )
 
                    [touches:protected] => Array
                        (
                        )
 
                    [timestamps] => 1
                    [hidden:protected] => Array
                        (
                        )
 
                    [visible:protected] => Array
                        (
                        )
 
                    [guarded:protected] => Array
                        (
                            [0] => *
                        )
 
                )
 
            [1] => Modules\ThemeStoreDb\Models\ThemeAsset Object
                (
                    [forceDeleteVersion:protected] => 
                    [table:protected] => theme_asset2
                    [connection:protected] => mysql
                    [primaryKey:protected] => id
                    [keyType:protected] => int
                    [incrementing] => 1
                    [with:protected] => Array
                        (
                        )
 
                    [withCount:protected] => Array
                        (
                        )
 
                    [perPage:protected] => 15
                    [exists] => 1
                    [wasRecentlyCreated] => 
                    [attributes:protected] => Array
                        (
                            [asset_key] => migrations/migrate_collections.blade.php
                        )
 
                    [original:protected] => Array
                        (
                            [asset_key] => migrations/migrate_collections.blade.php
                        )
 
                    [changes:protected] => Array
                        (
                        )
 
                    [casts:protected] => Array
                        (
                        )
 
                    [dates:protected] => Array
                        (
                        )
 
                    [dateFormat:protected] => 
                    [appends:protected] => Array
                        (
                            [0] => created_at
                            [1] => updated_at
                        )
 
                    [dispatchesEvents:protected] => Array
                        (
                        )
 
                    [observables:protected] => Array
                        (
                        )
 
                    [relations:protected] => Array
                        (
                        )
 
                    [touches:protected] => Array
                        (
                        )
 
                    [timestamps] => 1
                    [hidden:protected] => Array
                        (
                        )
 
                    [visible:protected] => Array
                        (
                        )
 
                    [guarded:protected] => Array
                        (
                            [0] => *
                        )
 
                )
        )
 
)

3、由于需要取出文件：migrations/v2.0.28/migrate_settings_data.php 中的 v2.0.28 部分。其中有一些文件：migrations/migrate_cart.blade.php 不存在 v2.0.28 部分，所以需要先过滤掉。先后使用了集合的 filter()、mapToGroups() 方法。

$grouped = $themeAssets->filter(function ($value) {
    return Str::startsWith(explode('/', $value->asset_key)[1], 'v2');
})->mapToGroups(function ($value) {
    return [explode('/', $value->asset_key)[1] => $value->asset_key];
});
print_r($grouped);
exit;

4、打印结果如下，符合预期。如图2

打印结果如下，符合预期

图2

Illuminate\Support\Collection Object
(
    [items:protected] => Array
        (
            [v2.0.20] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.0.20/migrate_settings_data.php
                        )
 
                )
 
            [v2.0.21] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.0.21/migrate_settings_data.php
                        )
 
                )
 
            [v2.0.28] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.0.28/migrate_cart.php
                            [1] => migrations/v2.0.28/migrate_collections.php
                            [2] => migrations/v2.0.28/migrate_collectiontitem.php
                            [3] => migrations/v2.0.28/migrate_index.php
                            [4] => migrations/v2.0.28/migrate_product_detail.php
                            [5] => migrations/v2.0.28/migrate_search.php
                            [6] => migrations/v2.0.28/migrate_settings_data.php
                        )
 
                )
 
            [v2.1.1] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.1/migrate_index.php
                        )
 
                )
 
            [v2.1.2] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.2/migrate_settings_data.php
                        )
 
                )
 
            [v2.1.3] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.3/migrate_cart.php
                            [1] => migrations/v2.1.3/migrate_collections.php
                            [2] => migrations/v2.1.3/migrate_collectiontitem.php
                            [3] => migrations/v2.1.3/migrate_index.php
                            [4] => migrations/v2.1.3/migrate_product_detail.php
                            [5] => migrations/v2.1.3/migrate_search.php
                        )
 
                )
 
            [v2.1.30] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.30/migrate_settings_data.php
                        )
 
                )
 
            [v2.1.65] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.65/migrate_product_detail.php
                            [1] => migrations/v2.1.65/migrate_settings_data.php
                        )
 
                )
 
            [v2.1.70] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.70/migrate_settings_data.php
                        )
 
                )
 
            [v2.1.80] => Illuminate\Database\Eloquent\Collection Object
                (
                    [items:protected] => Array
                        (
                            [0] => migrations/v2.1.80/migrate_product_detail.php
                        )
 
                )
 
        )
 
)

5、仅获取集合中的数组的键。如图3

仅获取集合中的数组的键

图3

print_r(array_keys($grouped->all()));
exit;

Array
(
    [0] => v2.0.20
    [1] => v2.0.21
    [2] => v2.0.28
    [3] => v2.1.1
    [4] => v2.1.2
    [5] => v2.1.3
    [6] => v2.1.30
    [7] => v2.1.65
    [8] => v2.1.70
    [9] => v2.1.80
)

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标签： array_keys collection explode filter Laravel 6 mapToGroups()Str::startsWith 不重复文件列表特定目录列表

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