model

Using ModelMapper on different data types with same attribute name

由 泪湿孤枕 提交于 2021-01-01 04:21:11
问题 I have two classes say Animal & AnimalDto I want to use ModelMapper to convert Entity to DTO and vice verca. But the classes are supposed to have different data types for a few attributes having similar name. How do I achieve this? Animal.java public class Animal { int category; String color; int age; } AnimalDto.java public class AnimalDto { String category; int color; int age; } currently I'm manually transforming as such: class AnimalTransformer { private static Category[] categories =

Auto increment django model field per user

由 …衆ロ難τιáo~ 提交于 2020-12-30 06:36:05
问题 I have this model: class Invoice(models.Model): owner = models.ForeignKey(settings.AUTH_USER_MODEL) data = models.TextField(default=None, blank=True, null=True) number = models.PositiveIntegerField(default=0, null=False) What I need is to auto-increment the field number for each separated user. The rationale is that each user has a list of Invoice , starting from number=1 to number=latest.number+1 . I do known about F() expressions, but can't figure out how to reference the latest/greatest

springMVC笔记系列(14)——模型数据处理篇 之 Map

由 坚强是说给别人听的谎言 提交于 2020-12-19 08:40:37
Spring MVC 在内部使用了一个 org.springframework.ui.Model 接口存储模型数据 具体步骤： – Spring MVC 在调用方法前会创建一个隐含的模型对象作为模型数据的存储容器。 – 如果方法的入参为 Map 或 Model 类型，Spring MVC 会将隐含模型的引用传递给这些入参。在方法体内，开发者可以通过这个入参对象访问到模型中的所有数据，也可以向模型中添加新的属性数据 参数的类型可以Map接口引用，也可以是ModelMap或Model。 package com.happyBKs.springmvc.handlers; import java.util.Arrays; import java.util.Date; import java.util.Map; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.happyBKs.springmvc.beans.Location; @RequestMapping("/model")

Laravel Call to undefined method App\\ Model ::mapInto(), vendor\\laravel\\framework\\src\\Illuminate\\Support\\Traits\\ForwardsCalls.php

由 允我心安 提交于 2020-12-15 10:25:19
问题 I'm trying to public function show(Product $product) { return ProductDetailResource::collection($product); } Call to undefined method App\ Model ::mapInto(), exception: BadMethodCallException file vendor\laravel\framework\src\Illuminate\Support\Traits\ForwardsCalls.php then google and cant find any results 回答1: just need to replace public function show(Product $product) { return ProductDetailResource::make($product); } instead of: public function show(Product $product) { return

Django admin groups permissions and access

由 孤者浪人 提交于 2020-12-15 06:42:15
问题 I'm searching for a way to customize the Django Administration to support permissions and data based on the user group. For example, I've just created the Developers1, Developers2 groups.. now I've also created the Transaction model, with AdminModel to specify how to list data. Transacton model: class Transaction(models.Model): income_period_choices = (('Weekly', 'Weekly'), ('Fortnightly', 'Fortnightly')) chp_reference = models.CharField(max_length=50, unique=True) rent_effective_date =

How to call an event on successful api response in react js.?

由 ぐ巨炮叔叔 提交于 2020-12-15 04:59:24
问题 I am trying to open a model whenever the API response is true but I am facing two issues here first is I cannot update the state of my local status object due to which model does not open what I want is whenever I get success in API my model component should be open. I am getting a status object in my API response and which is boolean below there is a function of submitPhoneNumber in which all the state update is done. My component import React, { Component } from "react"; import {

Share types between client and server

由 房东的猫 提交于 2020-12-15 03:59:39
问题 I'm working on a project with a Node.js, Express.js & TypeScript backend (REST API) and a React, Redux & TypeScript frontend. In the backend I have created some types for example: models/Product.ts export type Product = { title: string description: string price: number } So the REST API is sending a response like the following: { "data": [ {"title": "Shoe", "Description": "This is a shoe.", "price": 20}, {...} ] // inside here all the Products[] } On the client I want to cast the data to the

Share types between client and server

由 不问归期 提交于 2020-12-15 03:58:37
问题 I'm working on a project with a Node.js, Express.js & TypeScript backend (REST API) and a React, Redux & TypeScript frontend. In the backend I have created some types for example: models/Product.ts export type Product = { title: string description: string price: number } So the REST API is sending a response like the following: { "data": [ {"title": "Shoe", "Description": "This is a shoe.", "price": 20}, {...} ] // inside here all the Products[] } On the client I want to cast the data to the

Why does shuffling training data affect my random forest classifier's accuracy?

由 百般思念 提交于 2020-12-13 06:08:46
问题 The same question has been asked. But since the OP didn't post the code, not much helpful information was given. I'm having basically the same problem, where for some reason shuffling data is making a big accuracy gain (from 45% to 94%!) to my random forest classifier. (In my case removing duplicates also affected the accuracy, but that may be a discussion for another day) Based on my understanding on how RF algorithm works, this really should not happen. My data are merged from several files
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