4/22/2024 0 Comments Access control allow origin axios![]() ![]() For solving the problem: 'Access-Control-Allow-Origin' header on a get request just add: app.use(function(req, res. In this case it does not seem necessary, but surely there are other cases in which it is a good solution.// expressjs server router. In two words: If you are using expressJS like me. It is true that another option would be making use of Netlify functions, but it would complicate the development a lot for what we are doing, since we would have to modify the proxy to execute the function locally as well and call netlify in our Yarn or NPM command previously to Vite. With this we can commit and push the file, deploy it in Netlify and enjoy our application :) The order of the redirects is important, first the redirection rules must go to the different APIs or services and then the rest of the redirects to index.html In the case of a Vue 3 application it must be in the root of the project, while in a Vite project it must be located within the public folder. In Netlify this type of modification is made through a _redirects file. Otherwise it will be called from the URL from which the application is running. This is due to the fact that it is necessary recreate a similar process and allow the execution of the URL through a redirection rule. There are also no console errors, so it is not clear what is happening. The deployment is successful and appears to be working correctly, but the API request is not working. We have fixed our CORS issues to develop on our local server, but what happens when deploying our application on Netlify? With these modifications in the calls and the proxy settings, we are now ready to develop our application calling any API using Axios without CORS problems. To enable CORS (Cross-Origin Resource Sharing) in axios, you can configure the headers of the request to include the Access-Control-Allow-Origin field, along with any other required fields. Already in the app.vue file itself we can add an example method to make a Get type request with Axios to our example API: const searchFromApi = async ( query : string ) => Īs you can see, the API call is made using as url the reference made in the file and not the API url. To create a test project (I will not go into detail) it is necessary to execute the following commands: yarn create vite // framework: vue // variant: vue-ts cd vite-project yarn yarn add axios yarn devĪs always, when calling the dev URL (in our case localhost: 3000) the typical Hello World landing appears. ![]() Introductionīefore going in depth, I leave a small summary of the characteristics of the project: To allow any site to make CORS requests without using the wildcard (for example, to enable credentials), your server must read the value of the request's Origin header and use that value to set Access-Control-Allow-Origin, and must also set a Vary: Origin header to indicate that some headers are being set dynamically depending on the origin. In today's article we will talk about CORS, Proxies with Vite, and redirects with Netlify. However, along the way I am finding a series of differences that I find interesting to comment on. I created this project with Vite and Vue 3 to test the new features that it brings with respect to the previous version. ![]() Lately I have been working on a personal project that among other things uses a SERP service through an API. You can read this article also in Spanish. ![]()
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