Ruby on rails RUBY—在哈希表中执行哈希数组的正确方法

我需要在散列中做一个散列数组，如下所示：

merit_hash => {
    students => [
    {
        "id": id,
        "name": name,
        subjects => [
            {
                "id": id,
                "grade": grade
            },
            {
                "id": id,
                "grade": grade
            }
        ]
    },
    {
        "id": id,
        "name": name,
        subjects => [
            {
                "id": id,
                "grade": grade
            },
            {
                "id": id,
                "grade": grade
            }
        ]
    }
    ]
}

merit = {}
merit["students"] = []

students.each do |students|
    student_subjects = []
    merit["students"] << {
        "id" => students.id,
        "name" => students.name.to_s
    }
    selected_batch_subjects.each do |subjects|
    grade = FinalGrades.where(batch_subject_id:subjects.id, period_id:   period.id, student_id: student.id).first.value
        student_subjects << {"id" => subjects.id,"grade"=> grade}  
    end
end

现在，我只有学生哈希数组，但我不知道如何将主题数组放入其中，我正在这样做：

merit = {}
merit["students"] = []

students.each do |students|
    student_subjects = Array.new
    merit["students"].push(    
      {
        "id" => students.id,
        "name" => students.name.to_s
        selected_batch_subjects.each do |subjects|
            grade = FinalGrades.where(batch_subject_id:subjects.id, period_id: period.id, student_id: student.id).first.value
            student_subjects.push(
                {
             "id" => subjects.id,
             "grade"=> grade
                }
            )
        end 
      }
    )
end

但是抛出了这个错误

意外“}”，应为关键字\u end

当我尝试关闭学生哈希时。。。我能做些什么来让它工作？或者，实现这一点的最佳方式是什么

---

谢谢

像这样的方法应该会奏效：

merit = {}
merit["students"] = []
students.each do |student|
  student_information = {"id" => student.id, "name" => student.name.to_s}
  student_subjects = []
  selected_batch_subjects.each do |subjects|
    grade = FinalGrades.where(batch_subject_id:subjects.id, period_id: period.id, student_id: student.id).first.value
    student_subjects.push({"id" => subjects.id, "grade" => grade})
  end
  student_information[:subjects] = student_subjects
  merit["students"].push(student_information)
end

---

重要的部分是将每个学生的主题添加到已经存在的哈希中。

类似的操作应该可以：

merit = {}
merit["students"] = []
students.each do |student|
  student_information = {"id" => student.id, "name" => student.name.to_s}
  student_subjects = []
  selected_batch_subjects.each do |subjects|
    grade = FinalGrades.where(batch_subject_id:subjects.id, period_id: period.id, student_id: student.id).first.value
    student_subjects.push({"id" => subjects.id, "grade" => grade})
  end
  student_information[:subjects] = student_subjects
  merit["students"].push(student_information)
end

---

重要的部分是将每个学生的主题添加到已经存在的哈希中。

我不太清楚您的迭代，但对于当前循环和数组推送，您可以这样做：

merit_hash => {
    students => [
    {
        "id": id,
        "name": name,
        subjects => [
            {
                "id": id,
                "grade": grade
            },
            {
                "id": id,
                "grade": grade
            }
        ]
    },
    {
        "id": id,
        "name": name,
        subjects => [
            {
                "id": id,
                "grade": grade
            },
            {
                "id": id,
                "grade": grade
            }
        ]
    }
    ]
}

merit = {}
merit["students"] = []

students.each do |students|
    student_subjects = []
    merit["students"] << {
        "id" => students.id,
        "name" => students.name.to_s
    }
    selected_batch_subjects.each do |subjects|
    grade = FinalGrades.where(batch_subject_id:subjects.id, period_id:   period.id, student_id: student.id).first.value
        student_subjects << {"id" => subjects.id,"grade"=> grade}  
    end
end

merit={}
成绩[“学生”]=[]
学生们，每个人都是学生|
学生科目=[]
优点[“学生”]students.id，
“name”=>students.name.to_
}
选定的受试者。每个受试者|
成绩=最终成绩。其中（批次\科目\ id:subjects.id，期间\ id:period.id，学生\ id:student.id）。第一个值
student_subjects.id，“grade”=>grade}
结束
结束

我不太清楚您的迭代，但对于当前循环和阵列推送，您可以这样做：

merit_hash => {
    students => [
    {
        "id": id,
        "name": name,
        subjects => [
            {
                "id": id,
                "grade": grade
            },
            {
                "id": id,
                "grade": grade
            }
        ]
    },
    {
        "id": id,
        "name": name,
        subjects => [
            {
                "id": id,
                "grade": grade
            },
            {
                "id": id,
                "grade": grade
            }
        ]
    }
    ]
}

merit = {}
merit["students"] = []

students.each do |students|
    student_subjects = []
    merit["students"] << {
        "id" => students.id,
        "name" => students.name.to_s
    }
    selected_batch_subjects.each do |subjects|
    grade = FinalGrades.where(batch_subject_id:subjects.id, period_id:   period.id, student_id: student.id).first.value
        student_subjects << {"id" => subjects.id,"grade"=> grade}  
    end
end

merit={}
成绩[“学生”]=[]
学生们，每个人都是学生|
学生科目=[]
优点[“学生”]students.id，
“name”=>students.name.to_
}
选定的受试者。每个受试者|
成绩=最终成绩。其中（批次\科目\ id:subjects.id，期间\ id:period.id，学生\ id:student.id）。第一个值
student_subjects.id，“grade”=>grade}
结束
结束

完美！这就是我要找的。非常感谢，太好了！这就是我要找的。非常感谢你。