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The current way of computing a route's params and data recomputes inherited data from the inheritance root every time. When the inheritance strategy is "emptyOnly", this isn't necessarily the root of the tree, but some point along the way (it stops once it reaches an ancestor route with a component). Instead, this commit updates parameter inheritance to only inherit data directly from the parent route (again, instead of recomputing all inherited data back to the inheritance root). The only requirement for making this work is that the parent route data has already calculated and updated its own inherited data. This was really already a requirement -- parents need to be processed before children. In addition, the update to the inheritance algorithm in this commit requires more of an understanding that a resolver running higher up in the tree has to propagate inherited data downwards. The previous algorithm hid this knowledge because resolvers would recompute inherited data from the root when run. However, routes that did not have resolvers rerun or never had resolvers at all would not get the updated resolved data. fixes #51934 PR Close #52167 |
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Angular Router
Managing state transitions is one of the hardest parts of building applications. This is especially true on the web, where you also need to ensure that the state is reflected in the URL. In addition, we often want to split applications into multiple bundles and load them on demand. Doing this transparently isn’t trivial.
The Angular router is designed to solve these problems. Using the router, you can declaratively specify application state, manage state transitions while taking care of the URL, and load components on demand.
Guide
Read the dev guide here.