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I have converted Angular 4 to Angular 6 and I have built the project and geting the following error. Any idea how to handle?
Can't bind to 'ngTemplateOutletContext' since it isn't a known property of 'ng-container'.
<ul *ngIf="item.childrens != undefined && item.childrens.length > 0">
<ng-container *ngTemplateOutletContext="recursiveList; context:{ $implicit: item.childrens }"></ng-container>
</ul>
My question is on TemplateOutletContext, not TemplateOutlet.
344
This likely means that the library (@angular/common) which declares NgTemplateOutlet has not been processed correctly by ngcc, or is not compatible with Angular Ivy. Check if a newer version of the library is available, and update if so.
ngTemplateOutlet is a structural directive. We use it to insert a template (created by ngTemplate ) in various sections of our DOM. For example, you can define a few templates to display an item and use them display at several places in the View and also swap that template as per the user's choice.
A context object to attach to the EmbeddedViewRef . This should be an object, the object's keys will be available for binding by the local template let declarations. Using the key $implicit in the context object will set its value as default. @Input() ngTemplateOutlet: TemplateRef<any> | null.
You can define local variables on ng-template through let-name. When angular creates a template by calling createEmbeddedView it can also pass context that will be used inside ng-template. Using the key $implicit in the context object will set its value as default.
As per the docs:
ngTemplateOutletContextbound toNgTemplateOutlet.ngTemplateOutletContext
So you would be able to attach context in the following way:
<ng-container
[ngTemplateOutlet]="recursiveList"
[ngTemplateOutletContext]="{ $implicit: item.childrens }"></ng-container>
Or:
<ng-container *ngTemplateOutlet="recursiveList; context: { $implicit: item.childrens }"></ng-container>
Angular needs to know what view you intend on adding your context object to, so ngTemplateOutletContext won't work on its own AFAIK.
Source, Demo
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