Question

我想创建一个Web应用程序以解决客观问题的答案。我正在使用Mongodb，必须与以下对象建立关系。

Classes (like lkg, ukg … )
-- Subjects (like Maths, English …)
---- Lessons (like Lesson 1, Lesson 2 …)
------ Chapters (like Chapter 1A, Chapter 1B …)
-------- Questions (Q1, Q2 …. With correct answer and its description)

我已经考虑了以下内容，但是我无法理解我的Lessons收藏的关系。因此，我真的需要帮助来创建具有关系的收藏集。一个可以提出与我不同的解决方案。

"Classes": [
    {"id": 01, "name": "Class 1", "slug": "class-1"},
    {"id": 02, "name": "Class 2", "slug": "class-2"},
    .......
]

"Subjects": [
    {"id": 01, "name": "Math", "slug": "math"},
    {"id": 02, "name": "English", "slug": "english"},
    .......
]

"lessons": [
    {
    "name": "Lesson 1",
    "slug": "lesson-1",
    "class_id": 01,
    "subject_id": 01,
    "chapters": [
        {
        "name": "Chapter 1A",
        "slug": "chapter-1a",
        "questions":[
            {
                "que": "Question 1 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "A",
                "description": "Solution description will go here....."
            },
            {
                "que": "Question 2 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "B",
                "description": "Solution description will go here....."
            },
            ............
            ............
            ]
        },
        {
        "name": "Chapter 1B",
        "slug": "chapter-1b",
        "questions":[
            {
                "que": "Question 1 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "A",
                "description": "Solution description will go here....."
            },
            {
                "que": "Question 2 here?", 
                "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
                "answer": "B",
                "description": "Solution description will go here....."
            },
            ............
            ............
            ]
        },
        ...................
        ...................
    ]
    },
    {
    "name": "Lesson 2",
    "slug": "lesson-2",
    "class_id": 02,
    "subject_id": 02,
    "chapters": [
        {
        "name": "Chapter 1A",
        "slug": "cahpter-1a",
        "questions": [
            {
                "question": "Question 1 here?", 
                "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                "answer": "A",
                "description": "Solution description will go here....."
            },
            {
                "question": "Question 2 here?", 
                "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                "answer": "B",
                "description": "Solution description will go here....."
            },
            ............
            ............
            ]
        },
        {
            "name": "Chapter 1B",
            "slug": "chapter-1b",
            "questions":[
                {
                    "question": "Question 1 here?", 
                    "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                    "answer": "A",
                    "description": "Solution description will go here....."
                },
                {
                    "question": "Question 2 here?", 
                    "choices": [A: "ans 1", B: "ans 2", C: "ans 3", D: "ans 4"],
                    "answer": "B",
                    "description": "Solution description will go here....."
                },
                ............
                ............
                ]
            },
            ...................
            ...................
    ]
    },
    ....................
    .......................
]

Answer 1

是的，我不会实现这种数据结构。这就是在SQL par领域中要做的事情。

相反，将结构弄平，并确保端点包括视图所需的内容，并且没有嵌套的波纹管。

类似的东西：

"lessons": {
  "lesson_id_1": {
    "name": "Lesson 1",
    "slug": "lesson-1",
    "class": "Class 1",
    "subject": "Math",
    "chapters": [
      "Chapter 1A"
    ]
  }
},
"questions": {
  "lesson_id_1": {
    "Chapter 1A": {
      "slug": "chapter-1a",
      "questions": [{
        "que": "Question 1 here?", 
        "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
        "answer": "A",
        "description": "Solution description will go here....."
      },{
        "que": "Question 2 here?", 
        "choices": ["A": "ans 1", "B": "ans 2", "C": "ans 3", "D": "ans 4"],
        "answer": "B",
        "description": "Solution description will go here....."
      }]
    }
  }
}

您可以使用/lessons/lesson_id_1一次性获得所有课程数据

获取第1课第1A章的问题：/questions/lesson_id_1/Chapter 1A/

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您想做的是SQL。您需要转变范式，并提出问题，我真正需要在哪里提供哪些数据？

需要帮助来创建以下内容的Mongodb集合

1 个答案: