【发布时间】：2021-05-29 13:56:30
【问题描述】：
我不明白为什么我的 api 调用此列而不是 courseSection.courseId。来自邮递员
我正在使用 AngularJs、PostgresSQL、NodeJs 和 Sequelize ORM 构建我的项目。
这是我的 course.contorller.js 的一部分：
const db = require("../models");
const Course = db.course;
//view course catalogue
exports.retrieveAll = (req, res) => {
Course.findAll({
include: [{
model: db.courseSection,
as: "courseSection"
}, {
model: db.category,
as: "category"
}]
})
.then(data => {
res.send(data);
})
.catch(err => {
res.status(500).send({
message: err.message
});
}); };
这是我的 course.model.js
module.exports = (sequelize, Sequelize) => {
const Course = sequelize.define(
"course",
{
courseId: {
type: Sequelize.INTEGER,
autoIncrement: true,
primaryKey: true,
},
name: {
type: Sequelize.STRING,
allowNull: false,
validate: {
notEmpty: true,
},
},
description: {
type: Sequelize.STRING,
},
creditPrice: {
type: Sequelize.INTEGER,
},
isArchived: {
type: Sequelize.BOOLEAN,
defaultValue: false,
},
isDraft: {
type: Sequelize.BOOLEAN,
},
level: {
type: Sequelize.ENUM({
values: [
"PRIMARY 1",
"PRIMARY 2",
"PRIMARY 3",
"PRIMARY 4",
"PRIMARY 5",
"PRIMARY 6",
],
}),
},
createdAt: {
type: Sequelize.DATE,
},
updatedAt: {
type: Sequelize.DATE,
},
},
{
classMethods: {
associate: function (models) {
Course.hasMany(models.CourseSection, {
foreignKey: "courseId",
onDelete: "CASCADE",
});
Course.hasMany(models.Material, {
foreignKey: "courseId",
onDelete: "CASCADE",
});
Course.hasMany(models.Review, {
foreignKey: "courseId",
onDelete: "CASCADE",
});
Course.hasMany(models.Enrolment, {
foreignKey: "courseId",
onDelete: "CASCADE",
});
Course.belongsTo(models.Category, {
foreignKey: "categoryId",
onDelete: "CASCADE",
});
Course.belongsTo(models.User, {
foreignKey: "userId",
onDelete: "CASCADE",
});
},
},
}
);
return Course;
};
我的 courseSection.js
module.exports = (sequelize, Sequelize) => {
const CourseSection = sequelize.define(
"courseSection",
{
sectionId: {
type: Sequelize.INTEGER,
autoIncrement: true,
primaryKey: true,
},
name: {
type: Sequelize.STRING,
allowNull: false,
validate: {
notEmpty: true,
},
},
isArchived: {
type: Sequelize.BOOLEAN,
defaultValue: false,
},
createdAt: {
type: Sequelize.DATE,
},
updatedAt: {
type: Sequelize.DATE,
},
},
{
classMethods: {
associate: function (models) {
CourseSection.belongsTo(models.Course, {
foreignKey: "courseId",
onDelete: "CASCADE",
});
},
},
}
);
return CourseSection;
};
我的 course.js 迁移
"use strict";
//npx sequelize migration:generate --name course
module.exports = {
up: async (queryInterface, Sequelize) => {
return queryInterface.createTable("course", {
courseId: {
allowNull: false,
type: Sequelize.INTEGER,
autoIncrement: true,
primaryKey: true,
},
categoryId: {
type: Sequelize.INTEGER,
onDelete: "CASCADE",
references: {
model: "category",
key: "categoryId",
},
},
userId: {
type: Sequelize.INTEGER,
onDelete: "CASCADE",
references: {
model: "user",
key: "userId",
},
},
name: {
type: Sequelize.STRING,
allowNull: false,
validate: {
notEmpty: true,
},
},
description: {
type: Sequelize.STRING,
},
creditPrice: {
type: Sequelize.INTEGER,
},
isArchived: {
type: Sequelize.BOOLEAN,
defaultValue: false,
},
isDraft: {
type: Sequelize.BOOLEAN,
},
level: {
type: Sequelize.ENUM({
values: [
"PRIMARY 1",
"PRIMARY 2",
"PRIMARY 3",
"PRIMARY 4",
"PRIMARY 5",
"PRIMARY 6",
],
}),
},
createdAt: {
type: Sequelize.DATE,
},
updatedAt: {
type: Sequelize.DATE,
},
});
},
down: async (queryInterface, Sequelize) => {
return queryInterface.dropTable("course");
},
};
我的为 courseSection 迁移
"use strict";
module.exports = {
up: async (queryInterface, Sequelize) => {
return queryInterface.createTable("courseSection", {
sectionId: {
type: Sequelize.INTEGER,
autoIncrement: true,
primaryKey: true,
},
name: {
type: Sequelize.STRING,
allowNull: false,
validate: {
notEmpty: true,
},
},
courseId: {
type: Sequelize.INTEGER,
onDelete: "CASCADE",
references: {
model: "course",
key: "courseId",
},
},
isArchived: {
type: Sequelize.BOOLEAN,
defaultValue: false,
},
createdAt: {
type: Sequelize.DATE,
},
updatedAt: {
type: Sequelize.DATE,
},
});
},
down: async (queryInterface, Sequelize) => {
return queryInterface.dropTable("courseSection");
},
};
我的 index.js 在 /model
我的 postgres 表：
当我执行 localhost:3000/courses/course 时，我的 vscode 显示以下错误：
执行（默认）：SELECT "course"."courseId", "course"."name", "course"."description", "course"."creditPrice", "course"."isArchived", " course"."isDraft", "course"."level", "course"."createdAt", "course"."updatedAt", "course"."categoryCategoryId", "course"."categoryId", "course" ."userId", "course"."userUserId", "courseSection"."sectionId" AS "courseSection.sectionId", "courseSection"."name" AS "courseSection.name", "courseSection"."isArchived" AS " courseSection.isArchived", "courseSection"."createdAt" AS "courseSection.createdAt", "courseSection"."updatedAt" AS "courseSection.updatedAt", "courseSection"."courseCourseId" AS "courseSection.courseCourseId", "courseSection" ."courseId" AS "courseSection.courseId", "category"."categoryId" AS "category.categoryId", "category"."isArchived" AS "category.isArchived", "category"."name" AS "category.名称”，“类别”。“createdAt”作为“category.createdAt”，“类别”。“updatedAt”作为“category.updatedAt”从“课程”作为“课程”左外连接“ courseSection" AS "courseSection" ON "course"."courseId" = "courseSection"."courseCourseId" 左外连接 "category" AS "category" ON "course"."categoryId" = "category"."categoryId";
过去两天我一直在处理这个问题，老实说，我不知道我哪里出错了。我希望任何人都可以帮助我。
【问题讨论】：
标签： node.js angularjs postgresql sequelize.js