the correct url will be waiting in the browser's history for When the single page app is loaded further down in this file, which won't cause the browser to attempt to load the new url. converts it back into the correct url and adds it to the This script checks to see if a redirect is present in the query string, This is done with the following code snippet that we will need to place in the head of our index.html file (the earlier the better). We then need to decode these query strings and navigate to the correct page. The query strings are combined in a single query string called q and the paths are placed in a query string called p. Now we have been redirected to the index.html file and all paths, query strings, and hashtags (anchor links) have been passed on. This comes from the GitHub repository which is a repository that contains some general useful files for using SPA frameworks on GitHub Pages. Otherwise, leave pathSegmentsToKeep as 0. the real directory in which the app resides, for example: This way the code will only replace the route part of the path, and not then set pathSegmentsToKeep to 1 (enterprise users may need to set it to > 1). If you're creating a Project Pages site and NOT using a custom domain, to the new url with only a query string and hash fragment string into just a query string, and then redirects the browser This script takes the current url and converts the path and query The content of the 404.html is the following: We catch the user by creating a file called 404.html in the It shows this page but maintains the same URL which we can then extract and use to recover the state. And then we will need to tell the Blazor WASM website where the user actually wanted to go. First, we will need to redirect the user to some known page where we can control their further navigation. We don't actually have a directory for /MyPage as it is just a route that we have defined in Blazor to make the experience of using the website better for the user. MyPage that has an index.html file available to serve. If it sees something that looks like a directory in the URL after the expected then it will assume that you have some folder e.g. The problem occurs because of how GitHub Pages serves files. If this is your site, make sure that the filename case matches the URL.įor root URLs (like ) you must provide an index.html file. The site configured at this address does not contain the requested file. But if we try to access this URL directly we will be faced with the following page. We can nicely go to this page using the navigation in the website or when we run the project locally. Then we might have an URL like the following: If we have some Blazor WASM page that is hosted on GitHub Pages that uses routing meaning that it has more than one page. GitHub Pages is not configured to support SPA (Single Page Application) routing out of the box, but we can make some changes to our project to make it work.įirst, we need to see when the problem occurs. We can't do this when using static file hosts. Previously we have often used the IIS to host our websites and managed routing and error handling through the web.config file. In this article, we will look at the 404 error that often occurs when accessing a route directly on a GitHub Pages hosted Blazor WASM page and how to fix it. A problem with this is that routing is handled in many different ways on different hosts. One of the nice things about Blazor WASM is that it can be hosted by any static file host. The project structure of a Blazor WASM project is in some places very different than other frontend frameworks in the. Written by Kristoffer Strube, April 06, 2021
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