我将使用ckeditor v5进入我的项目.我试图使用图片插件,但我找不到有关它的足够信息.
如果你在这里看到Demoe ,你可以使用Drag&Drop轻松上传图像.但是,当我尝试拖放图像时,我会尝试使用下载气囊拉链时没有任何反应.也没有错误.
有没有办法在downladable变体中使用此图像支持?
我想将数据播种到我的数据库中。数据没有键或 ID 值。但由于某种原因我收到了错误:
\n\nSystem.NullReferenceException: Object reference not set to an instance of an object.\n at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.get_IsKeyUnknown()\n at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.PropagateToUnknownKey(EntityState oldState, EntityState entityState, Boolean adding, Nullable`1 forceStateWhenUnknownKey)\n at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.SetEntityState(EntityState entityState, Boolean acceptChanges, Boolean modifyProperties, Nullable`1 forceStateWhenUnknownKey)\n at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.InternalEntityEntry.Microsoft.EntityFrameworkCore.Update.IUpdateEntry.set_EntityState(EntityState value)\n at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.TrackData(IModel source, IModel target)\n at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.Diff(IModel source, IModel target, DiffContext diffContext)\n at Microsoft.EntityFrameworkCore.Migrations.Internal.MigrationsModelDiffer.GetDifferences(IModel source, IModel target)\n at Microsoft.EntityFrameworkCore.Migrations.Design.MigrationsScaffolder.ScaffoldMigration(String migrationName, String rootNamespace, String subNamespace, String language)\n at Microsoft.EntityFrameworkCore.Design.Internal.MigrationsOperations.AddMigration(String name, String outputDir, String contextType)\n at Microsoft.EntityFrameworkCore.Design.OperationExecutor.AddMigrationImpl(String name, String outputDir, String contextType)\n …Run Code Online (Sandbox Code Playgroud) 我想让我的网页模块化,这样我就不需要一次又一次地写我的东西。我以为我的解决方案是 ejs lib。所以我使用了配置如下的 express 和 ejs:
const app = express();
app.engine('.html', require('ejs').renderFile);
app.set('view engine', 'html');
app.set('views', __dirname + '/wwwroot/views');
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我的视图文件夹结构如下所示:
wwwroot
static
css
js
views
login
index.html
profile
dashboard.html
templates
inc_header.html
inc_footer.html
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我的仪表盘有以下内容
<% include templates/inc_header.html %>
This is my dashboard
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头文件将不包括在内。我试过 wwwroot/views/templates/header.html 和 header.html。什么都行不通。
app.engine('.html', require('ejs').renderFile);
app.set('view engine', 'html');
app.set('views', __dirname + '/wwwroot/views');
app.use(session({
secret: program.secret || "secret",
resave: true,
saveUninitialized: true
}));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }))
app.use('/', express.static(path.join(__dirname, '/wwwroot/static/')));
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<% include templates/inc_header.html %> …
我想查看更多的参数,如果它们是undefined.如果我做这样的事情,它会工作:
if(param1 === undefined || param2 === undefined || param3 === undefined) {
console.log('Is missing');
}
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但是我有6个以上的参数,如果我可以做这样的事情会很好:
if((param1 || param2 || param3) === undefined) {
console.log('Is missing');
}
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如果例如param3未定义,则第二个代码部分不会返回"Is missing".