Mongoose只推送ObjectID，而不是整個檔案

我有一個食譜博客網站，每個食譜都有評論。每條評論都保存到評論集合中，但是當我將評論推送到正確的配方時，不僅僅是保存 ObjectID。這是我的代碼：

配方型號

const { Double } = require('bson');
const mongoose = require('mongoose');

const recipeSchema = new mongoose.Schema({
    name: {
        type: String,
        required: 'This field is required.'
    },
    description: {
        type: String,
        required: 'This field is required.'
    },
    quantity: {
        type: Array,
        required: 'This field is required.'
    },
    ingredients: {
        type: Array,
        required: 'This field is required.'
    },
    comments: [
        {
            type: mongoose.Schema.Types.ObjectId,
            ref: 'Comment'
        }
    ],
    recipe_id: {
        type: String,
    }

});

recipeSchema.index({ name: 'text', description: 'text' });
const Recipe = module.exports = mongoose.model('Recipe', recipeSchema);

評論模型

const commentSchema = new mongoose.Schema({
    username: {
        type: String,
        required: 'This field is required.'
    },
    comment: {
        type: String,
        required: 'This field is required.'
    },
    recipe_id: {
        type: String
    }
});

路線

router.get('/', recipeController.homepage);
router.get('/recipe/:id', recipeController.exploreRecipe );
router.get('/categories/:id', recipeController.exploreCategoriesById);
router.get('/categories', recipeController.exploreCategories);
router.get('/submit-recipe', recipeController.submitRecipe);
router.post('/submit-recipe', recipeController.submitRecipeOnPost);
router.post('/recipe/:id/comments', recipeController.CommentRecipeOnPost);

控制器

module.exports.CommentRecipeOnPost = async(req, res) => {
    const comment = new Comment({
      username: req.body.username,
      comment: req.body.comment
    });
    comment.save((err, result) => {
      if (err){
        console.log(err)
      }else {
        Recipe.findById(req.params.id, (err, post) =>{
          if(err){
            console.log(err);
          }else{
            post.comments.push(result);
            post.save();

            console.log('====comments=====')
            console.log(post.comments);
            res.redirect('/');
          }
        })
      }
    })
   }

我嘗試了 populate 和另一種方法，但沒有人作業，經過很多小時的編程，我完成了這些，我只能保存 ObjectId-s。

uj5u.com熱心網友回復：

這是因為你定義的評論在配方模式作為的ObjectId那是正確的，如果你想獲得完整評論引數，你會填充記錄

const recipe = await Recipe.findOne({ _id: "recordId"}).populate("posts") 

這將回傳所有評論詳細資訊

{  name: "Fitness recipe", description: "Fitness recipe to loss 10kg in 10 days only", comments: [ {_id: "recordId", username: "Smith June", comment: "That's awesome"}]}

如果您需要將整個檔案保存為一個物件陣列，而不僅僅是 id，那么您可以創建這樣的架構

const recipeSchema = new mongoose.Schema({
    name: {
        type: String,
        required: 'This field is required.'
    },
    description: {
        type: String,
        required: 'This field is required.'
    },
    quantity: {
        type: Array,
        required: 'This field is required.'
    },
    ingredients: {
        type: Array,
        required: 'This field is required.'
    },
    comments: [
        { username: String, comment: String }
    ],
    recipe_id: {
        type: String,
    }

})

在這種情況下，您不會有任何關系，您可以輕松列出食譜評論。

標籤：javascript 节点.js 表达 猫鼬 推

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