• 使用 JavaScript
    • app.js
    • entity/Category.js
    • entity/Post.js

    使用 JavaScript

    TypeORM 不仅可以用于 TypeScript，还可以用于 JavaScript。 一切都是一样的，除了需要省略类型，如果你的平台不支持 ES6 类，那么你需要定义具有所有必需元数据的对象。

    app.js

    1. var typeorm = require("typeorm");
    3. typeorm
    4.   .createConnection({
    5.     type: "postgres",
    6.     host: "localhost",
    7.     port: 5432,
    8.     username: "test",
    9.     password: "admin",
    10.     database: "test",
    11.     synchronize: true,
    12.     entitySchemas: [require("./entity/Post"), require("./entity/Category")]
    13.   })
    14.   .then(function(connection) {
    15.     var category1 = {
    16.       name: "TypeScript"
    17.     };
    18.     var category2 = {
    19.       name: "Programming"
    20.     };
    22.     var post = {
    23.       title: "Control flow based type analysis",
    24.       text: "TypeScript 2.0 implements a control flow-based type analysis for local variables and parameters.",
    25.       categories: [category1, category2]
    26.     };
    28.     var postRepository = connection.getRepository("Post");
    29.     postRepository
    30.       .save(post)
    31.       .then(function(savedPost) {
    32.         console.log("Post has been saved: ", savedPost);
    33.         console.log("Now lets load all posts: ");
    35.         return postRepository.find();
    36.       })
    37.       .then(function(allPosts) {
    38.         console.log("All posts: ", allPosts);
    39.       });
    40.   })
    41.   .catch(function(error) {
    42.     console.log("Error: ", error);
    43.   });

    entity/Category.js

    1. module.exports = {
    2.   name: "Category",
    3.   columns: {
    4.     id: {
    5.       primary: true,
    6.       type: "int",
    7.       generated: true
    8.     },
    9.     name: {
    10.       type: "string"
    11.     }
    12.   }
    13. };

    entity/Post.js

    1. module.exports = {
    2.   name: "Post",
    3.   columns: {
    4.     id: {
    5.       primary: true,
    6.       type: "int",
    7.       generated: true
    8.     },
    9.     title: {
    10.       type: "string"
    11.     },
    12.     text: {
    13.       type: "text"
    14.     }
    15.   },
    16.   relations: {
    17.     categories: {
    18.       target: "Category",
    19.       type: "many-to-many",
    20.       joinTable: true,
    21.       cascade: true
    22.     }
    23.   }
    24. };

    您可以查看此示例typeorm/javascript-example以了解更多信息。