scaffold

In my Grails 1.3.7 project I have a domain class like this: class User { String login String password String name String passwordConfirmation static constraints = { login unique:true, blank:false, maxSize:45 password password:true, blank:false, size:8..45, matches: /(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\s).*/ name blank:false, maxSize:45 passwordConfirmation display:true, password:true, validator: { val, obj -> if (!obj.properties['password'].equals(val)) { return ['password.mismatch'] }} } static transients = ['passwordConfirmation'] String toString() { name } } And I'm using scaffold for the

AppBar属于基础组件，结构如下 以下示例显示一个带有两个简单操作的AppBar。第一个动作打开SnackBar，第二个动作导航到新页面。 import 'package:flutter/material.dart'; class LoginPage extends StatefulWidget { @override _LoginPageState createState() => _LoginPageState(); } class _LoginPageState extends State<LoginPage> { @override Widget build(BuildContext context) { final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>(); final SnackBar snackBar = const SnackBar(content: Text('Showing Snackbar')); return Scaffold( key: scaffoldKey, appBar: AppBar( title: const Text('AppBar Demo'), actions: <Widget>[ IconButton( icon: const Icon(Icons

AppBar属于基础组件，结构如下 以下示例显示一个带有两个简单操作的AppBar。第一个动作打开SnackBar，第二个动作导航到新页面。 import 'package:flutter/material.dart'; class LoginPage extends StatefulWidget { @override _LoginPageState createState() => _LoginPageState(); } class _LoginPageState extends State<LoginPage> { @override Widget build(BuildContext context) { final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>(); final SnackBar snackBar = const SnackBar(content: Text('Showing Snackbar')); return Scaffold( key: scaffoldKey, appBar: AppBar( title: const Text('AppBar Demo'), actions: <Widget>[ IconButton( icon: const Icon(Icons

http://www.bsjobjob.com 璧山人才网 ， 璧山招聘网 https://docs.microsoft.com/zh-cn/ef/core/what-is-new/ef-core-2.0 ef 命令 https://github.com/aspnet/EntityFrameworkCore 开源地址 .net core EF 依赖库Microsoft.EntityFrameworkCore.SqlServer Microsoft.EntityFrameworkCore Microsoft.EntityFrameworkCore.Design 依赖库 Microsoft.EntityFrameworkCore.Tools.DotNet 节点 DotNetCliToolReference <DotNetCliToolReference Include="Microsoft.EntityFrameworkCore.Tools.DotNet" Version="1.0.0" /> dotnet ef migrations add InitialCreate 迁移仓库 dotnet ef migrations list 列出所有可以迁移的仓库 dotnet ef migrations remove 移除迁移项目 dotnet ef migrations script

i'm starting now on Rails, i looked in the forum, but i didn't find anything that could solve my problem. Here it goes, I have a Category table, and it has only name for a column (there is no repetition in categories) so i would like name to be the primary key, then i have a Product table that has name, main_photo, description and i would like to say that a product only has a category, do i need to add a column named category as a foreign key in products? A Category is suposed to have many products. Then in category models how do i say that name is the primary Key, and how can i do the

I've obtained a project that have controllers (minimal code only) and models, but the views are missing. Is there a way to generate the views only using scaffold or another tool? rails g scaffold User --migration=false --skip The --skip means to skip files that already exist. (The opposite is --force .) If you don't want helpers, --helpers=false . Sample output after deleting my User views: invoke active_record identical app/models/user.rb invoke test_unit identical test/unit/user_test.rb skip test/fixtures/users.yml route resources :users invoke scaffold_controller identical app/controllers

As you can see my button is inside Scaffold's body. But I get this exception: Scaffold.of() called with a context that does not contain a Scaffold. import 'package:flutter/material.dart'; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Flutter Demo', theme: ThemeData( primarySwatch: Colors.blue, ), home: HomePage(), ); } } class HomePage extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('SnackBar Playground'), ), body: Center(

一、添加依赖 flutter_swiper: ^1.1.6 flutter_screenutil: ^0.6.1 查看最新版本： https://pub.flutter-io.cn 二、代码 import 'package:flutter/material.dart'; import 'package:flutter_swiper/flutter_swiper.dart'; import 'package:flutter_screenutil/flutter_screenutil.dart'; class HomePage extends StatefulWidget{ @override _HomePageState createState() => _HomePageState(); } class _HomePageState extends State<HomePage> { List _imageUrls = [ 'http://h.hiphotos.baidu.com/zhidao/wh%3D450%2C600/sign=0d023672312ac65c67506e77cec29e27/9f2f070828381f30dea167bbad014c086e06f06c.jpg', 'http://h.hiphotos.baidu.com/zhidao/wh%3D450