Question

关于此错误的堆栈溢出问题很多。但是他们的解决方案似乎对我不起作用。所以我终于决定发表我自己的问题。（这可能与我缺乏对javascript / node / mongoose的了解有关）

我的模块是-

shared_conv1 = Conv1D(filters=8, kernel_size=3, activation='relu')

for i in range(4):
    inputs = Input(shape=(n_timesteps,1))
    conv1 = shared_conv1(inputs)
    conv2 = Conv1D(filters=16, kernel_size=3, activation='relu')(conv1) 
    conv3 = Conv1D(filters=32, kernel_size=3, activation='relu')(conv2)
    flat = Flatten()(conv3)
    in_layers.append(inputs)
    out_layers.append(flat)

merged = concatenate(out_layers)

# interpretation
dense1 = Dense(200, activation='relu')(merged)
dense2 = Dense(100, activation='relu')(dense1)

outputs_1 = Dense(10)(dense2)
outputs_2 = Dense(10)(dense2)
outputs_3 = Dense(10)(dense2)
outputs_4 = Dense(10)(dense2)

我的控制器有这个-

const mongoose = require('mongoose');
const Schema = mongoose.Schema;

var OptionSchema = new Schema({
    option_text: {type: String, required: true},
    is_correct: {type: Boolean, required: true, default: false}
});

var QuestionSchema = new Schema({
    question_text: {type: String, required: true},
    subText: {type: String, required: true},
    type: {type: String, required: true},
    difficulty: {type: String, required: true, default: 'Easy'},
    status: {type: String, required: true, default: 'Private'},
    options_required: {type: Boolean, required: true, default: false},
    explanation: {type: [String], required: true},
    created_by: {type: String, required: true, default: 'Anonymous'},
    created_at: {type: Date, required: true, default: Date.now()},
    options: [OptionSchema]
});



// Export the model
module.exports.Question = QuestionSchema;
module.exports.Option = OptionSchema;

我能找到的最接近的问题在此链接上- Mongoose TypeError: User is not a constructor

但是答案没有用。

_ / \ _

Answer 1

我认为您需要按照以下步骤做些事情：

module.exports.Question = mongoose.model('Question', QuestionSchema);

Answer 2

您正在尝试创建模式的新实例，而不是模型。只有模型具有构造函数，而没有架构。这是由于您没有导出模型而是导出了架构。需要这样做：

// Export the model
module.exports.Question = mongoose.model('Question', QuestionSchema);
module.exports.Option = mongoose.model('Option', OptionSchema);

然后，您可以在控制器中导入模型：

var Question = require('./models/question');
var Option = require('./models/option');

假设模型位于models文件夹中。

猫鼬TypeError：问题不是构造函数

2 个答案: