Problem with Custom Object Types

vladimir-upirov · December 21, 2023, 11:19am

Welcome to the Backendless community!

The PersistenceItem class expects the first argument as an object of the data of the instance

Backendless/JS-Code-Runner/blob/master/lib/server-code/api/persistence-item.js#L79


      
          }
          
          /**
           * @typedef {Object} PersistenceIten
           * @property {String} ownerId
           * @property {String} objectId
           * @property {Number} created
           * @property {Number} updated
           */
          class PersistenceItem {
            constructor(args) {
              this.___class = this.constructor.name
          
              if (typeof args === 'string') {
                args = { objectId: args }
              }
          
              Object.assign(this, args)
            }
          
            /**

So, if you remove constructors it resolve all instances automatically

/*Created on 12/21/2023 12:39:10.*/

/**
  * @property {string} text
  * @property {string} restaurant
  * @property {FileParameter} preview
  * @property {string} title
  */
 class CreatePostDTO extends Backendless.ServerCode.PersistenceItem {

}

Backendless.ServerCode.addType(CreatePostDTO);

  /**
  * @property {string} data
  * @property {string} name
  */
class FileParameter extends Backendless.ServerCode.PersistenceItem {
  getName(){
    return this.name
  }
};

Backendless.ServerCode.addType(FileParameter);

class MyService{
  

/**
   * @route POST /restaurant/post
   * @param {CreatePostDTO} post
   */
  async createRestaurantPost(post) {
    console.log('post', post)
    console.log('post.preview.getName', post.preview.getName())
    
    return post
  }
  
}  
  
Backendless.ServerCode.addService(MyService)

13:16:41.504 | SERVER_CODE | INFO | [35982] post CreatePostDTO { ___class: 'CreatePostDTO', preview: FileParameter { ___class: 'FileParameter', data: 'string', name: 'string' }, restaurant: 'string', text: 'string', title: 'string' }
13:16:41.504 | SERVER_CODE | INFO | [35982] post.preview.getName string