Laravel Eloquent 求和预加载

Question

我正在尝试找出预先加载大量数据的最佳方法，以便我的项目可以快速轻松地加载。正如您在下面看到的，我们的对象之间有很多关系，每个级别都需要多次计算和显示总和。我想知道如何快速加载和显示这些数据。

关系：

Website has campaigns, groups, keywords, valid_click_ads, facebook_ads, google_ads, yahoo_ads
Campaign has groups, keywords, valid_click_ads, facebook_ads, google_ads, yahoo_ads
Group has keywords, valid_click_ads, facebook_ads, google_ads, yahoo_ads
Keywords has valid_click_ads

这是我需要的数据。我希望获得基本上每个关系级别的数据（WHERE created_at = 今天的所有数据）

Object -> name
          sum(valid_click_ads->revenue)
          sum(facebook_ads->spend)
          sum(yahoo_ads->spend)
          sum(google_ads->spend)
          sum(valid_click_ads->tq WHERE tq != -1)
          count(tq)
          sum(CASE(tq = -1, 0, 1))
          sum(facebook_ads->impressions)
          sum(yahoo_ads->impressions)
          sum(google_ads->impressions)
          sum(facebook_ads->clicks)
          sum(yahoo_ads->clicks)
          sum(google_ads->clicks)
          sum(valid_click_ads->clicks)

如有必要，我很乐意提供更多信息。

Answer 1

如果我正确理解你的问题，你可以使用这样的东西：

Website::withCount(['valid_click_ads' => function($query) {
    $query->select(DB::raw('sum(revenue)'))
        ->where('created_at', ...);
}])->get();

Answer 2

使用 this 文章，我能够将我需要的东西放在一起，就像这样...

网站、活动和组模型：

public function getValidClickSumsAttribute() {
    if ( ! $this->relationLoaded('validClickSums')) 
        $this->load('validClickSums');

    $related = $this->getRelation('validClickSums');

    return $related;
}

public function facebookSums() {
    return $this->hasOne('App\Models\FacebookAd')->selectRaw('sum(spend) as spend, sum(clicks) as clicks, website_id')->groupBy('website_id');
}

public function getFacebookSumsAttribute() {
    if ( ! $this->relationLoaded('facebookSums')) 
        $this->load('facebookSums');

    $related = $this->getRelation('facebookSums');

    return $related;
}

public function googleSums() {
    return $this->hasOne('App\Models\GoogleAd')->selectRaw('sum(spend) as spend, sum(clicks) as clicks, website_id')->groupBy('website_id');
}

public function getGoogleSumsAttribute() {
    if ( ! $this->relationLoaded('googleSums')) 
        $this->load('googleSums');

    $related = $this->getRelation('googleSums');

    return $related;
}

public function yahooSums() {
    return $this->hasOne('App\Models\YahooAd')->selectRaw('sum(spend) as spend, sum(clicks) as clicks, website_id')->groupBy('website_id');
}

public function getYahooSumsAttribute() {
    if ( ! $this->relationLoaded('yahooSums')) 
        $this->load('yahooSums');

    $related = $this->getRelation('yahooSums');

    return $related;
}

关键词模型：

public function validClickSums() {
    return $this->hasOne('App\Models\ValidClickAd')->selectRaw('sum(impressions) as impressions, sum(revenue) as revenue, sum(clicks) as clicks, count(tq) as unscored_tq_count, sum(case when tq >= 0 then 1 else 0 end) as scored_tq_count, sum(case when tq >= 0 then tq else 0 end) as tq, keyword_id')->groupBy('keyword_id');
}

public function getValidClickSumsAttribute() {
    if ( ! $this->relationLoaded('validClickSums')) 
        $this->load('validClickSums');

    $related = $this->getRelation('validClickSums');

    return $related;
}

控制器：

    $websites = Website::select('name', 'id')->
        with(
            array(
                'validClickSums' => function( $query ) {
                    $query->where( 'user_id', '=', 2 );
                },
                'facebookSums' => function( $query ) {
                    $query->where( 'user_id', '=', 2 );
                },
                'googleSums' => function( $query ) {
                    $query->where( 'user_id', '=', 2 );
                },
                'yahooSums' => function( $query ) {
                    $query->where( 'user_id', '=', 2 );
                },
                'campaigns' => function( $query ) {
                    $query->where( 'user_id', '=', 2 )->with(
                        array(
                            'validClickSums' => function( $query ) {
                                $query->where( 'user_id', '=', 2 );
                            },
                            'facebookSums' => function( $query ) {
                                $query->where( 'user_id', '=', 2 );
                            },
                            'googleSums' => function( $query ) {
                                $query->where( 'user_id', '=', 2 );
                            },
                            'yahooSums' => function( $query ) {
                                $query->where( 'user_id', '=', 2 );
                            },
                            'traffic_source',
                            'groups' => function( $query ) {
                                $query->with(
                                    array(
                                        'validClickSums' => function( $query ) {
                                            $query->where( 'user_id', '=', 2 );
                                        },
                                        'facebookSums' => function( $query ) {
                                            $query->where( 'user_id', '=', 2 );
                                        },
                                        'googleSums' => function( $query ) {
                                            $query->where( 'user_id', '=', 2 );
                                        },
                                        'yahooSums' => function( $query ) {
                                            $query->where( 'user_id', '=', 2 );
                                        },
                                        'keywords' => function( $query ) {
                                            $query->with(
                                                array(
                                                    'validClickSums' => function( $query ) {
                                                        $query->where( 'user_id', '=', 2 );
                                                    },
                                                    'sourceSums' => function( $query ) {
                                                        $query->where( 'user_id', '=', 2 );
                                                    }
                                                )
                                            );
                                        }
                                    )
                                );
                            }
                        )
                    );
                }
            )
        )->get();

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