将查询从查询​​构建器t转换为Eloquent Query

Question

你好，你能帮助我吗？

我有这样的查询：

public function getByUser($userId,$activityId){
        return $journals = DB::table('personfamilies')
            ->join('journals','personfamilies.id','=','journals.person_id')
            ->join('journal_details','journals.id','=','journal_details.journal_id')
            ->where([
                ['user_id','=',$userId],
                ['activities_id','=',$activityId]
            ])
            ->get();
    }

如何转换为雄辩？

模型PersonFamily.php

public function relationship(){
    return $this->hasOne(Relationship::class,'id','relationship_id');
}

public function user(){
    return $this->belongsTo(User::class);
}

public function journal(){
    return $this->hasMany(Journal::class,'id','id');
}

Model Journal.php

   public function jurnalDetails(){
            return $this->hasMany(JurnalDetail::class,'id');
        }

        public function personfamily(){
            return $this->belongsTo(PersonFamily::class,'person_id','journal_id');
        }

JournalDetail.php

public function journal(){
        return $this->belongsTo(Journal::class,'id');
    }

我已经尝试过这样，但它无法正常工作 ```

return $journal = PersonFamily::where([
            ['user_id','=',$userId]
            ])
            ->with('journal','journal.jurnalDetails')
            ->get();
```

Answer 1

我会做这样的事情：

假设您有Family，FamilyMember，Journal和JournalEntry Models

家庭模式：

// A family has many family members
public function familyMember() {
    return $this->hasMany('App\FamilyMember');
}

FamilyMember型号：

// A family member belongs to exactly one family
public function family() {
    return $this->belongsTo('App\Family')
}

// A family member has exactly one journal
public function journal() {
    return $this->hasOne('App\Journal');
}

期刊模型：

// A journal belongs to exactly one family member
public function familyMember() {
    return $this->belongsTo('App\FamilyMember');
}

// A journal has many journal entries
public function journalEntries() {
    return $this->hasMany('App\JournalEntry');
}

JournalEntry模型：

// A journal entry belongs to exactly one journal
public function journal() {
    return $this->belongsTo('App\Journal');
}

然后你的查询变得相当简单：

// If you need the whole Family
$family = Family::find($familyId);
// If you need all the family members that belong to a family
$familyMembers = $family->familyMembers;
// If you are looking for a particular family member
$familyMember = FamilyMember::find($userId);
// If you need the journal for a family member
$journal = $familyMember->journal
// If you need all the journal entries in a particular journal
$journalEntries = $journal->journalEntries;

然后，您可以将这些变量传递到视图中并根据需要显示它们。

See the documentation以便在外键不同的情况下建立更多自定义关系。