model

问题 I've been looking for mechanism to update the model of a Route, and has the Component (called from within the template associated with that route) reacts to that event, and re-render itself. So I have the index template like this (I pass in the model of the IndexController, which to my understanding is just a proxy to IndexRoute -- I don't have IndexController defined, by the way): <script type="text/x-handlebars" id="index"> Below is the bar-chart component <br/> {{bar-chart model=model}} <

问题 I've been looking for mechanism to update the model of a Route, and has the Component (called from within the template associated with that route) reacts to that event, and re-render itself. So I have the index template like this (I pass in the model of the IndexController, which to my understanding is just a proxy to IndexRoute -- I don't have IndexController defined, by the way): <script type="text/x-handlebars" id="index"> Below is the bar-chart component <br/> {{bar-chart model=model}} <

问题 as my first project in Django I am creating a todo app, that lets people log in and see their own tasks that they created. For that, I need to save author info in single task data. From what I learned reading the documentation and doing lots of google-searching, the current approach is to use the get_user_model function from django.contrib.auth. The problem is, that whenever I try to use it in my model, it seems to not get the username from the currently logged in user. While printing the

问题 I am getting this error for validation of form. Method Illuminate\Validation\Validator::validateReqiured does not exist. <?php namespace App\Http\Controllers; use Illuminate\Http\Request; use App\Event; use Illuminate\Support\Facades\Validator; use Illuminate\Validation\ValidationRequired; class EventController extends Controller { protected $events; public function __construct() { $this->property = new Event(); } /* get all data */ public function getEvents() { $events =Event::latest()-

问题 this is my code i have just started learning ddjango and got stuck here. I added address and status a few days after the other columns i get this error params={'value': value}, django.core.exceptions.ValidationError: ["'' value must be either True or False."] from django.db import models class product(models.Model): prodid = models.IntegerField(("ID")) name = models.CharField(("Product Name"), max_length=100,unique ="true") price = models.IntegerField() star = models.IntegerField() def __str_

问题 problem: i am working on gNodeB scheduler in 5G. so want to add new radio model in cooja simulator. such as: urban microcell street canyon: UMi - Street Canyon urban macrocell: 3D-UMa indoor factory: InF kindly if someone provide guidance. 来源： https://stackoverflow.com/questions/65000446/want-to-add-5g-radio-model-in-cooja-simulator

问题 For a business application, I am providing a base entity model. Thereafter the end user should be able to extend the model for his specific needs. For the base model I want to use database-first approach. But I don't know how to accommodate for allowing user to extend it. One part is to provide a UI for entity model editing and the other is to reflect the changes in the model and database thereafter. Please offer suggestions. EDIT : - Once the entity model is edited and saved, all EF

问题 For a business application, I am providing a base entity model. Thereafter the end user should be able to extend the model for his specific needs. For the base model I want to use database-first approach. But I don't know how to accommodate for allowing user to extend it. One part is to provide a UI for entity model editing and the other is to reflect the changes in the model and database thereafter. Please offer suggestions. EDIT : - Once the entity model is edited and saved, all EF

问题 I want to validate a form via Model Entity Required Attribute. I have Declared Required Attribute in Db Model Class, but not able to view the validation error when the filed remains empty, However the data is inserted into Db if the form fields are not empty but when they are empty no Validation Error occurs. Here is my Model Class Code: namespace MVCLogin.Models { using System; using System.Collections.Generic; using System.ComponentModel; using System.ComponentModel.DataAnnotations; public

问题 I want to make a copy from my blog object and its comment. i write some code and it works for blog instance but does not copy its comments. This is my model: class Blog(models.Model): title = models.CharField(max_length=250) body = models.TextField() author = models.ForeignKey(Author, on_delete=models.CASCADE) date_created = models.DateTimeField(auto_now_add=True) class Comment(models.Model): blog = models.ForeignKey(Blog, on_delete=models.CASCADE) text = models.CharField(max_length=500) and