Vue.js + Axios tutorial for beginner
Modified2 years, 5 months ago. Whenever a user visits my web application, Axios makes a request to a third party API to fetch data and populate the frontend with that data using v-for. Conclusion: I have one API call per website visitor. Desired status:. Whenever a user visits my web application, Axios shall fetch the data from the SQLite database which itself is populated every XX seconds by a python request to reduce API calls.
Now I implemented a SQLite database using Django models and views. So far so good, the API gets fetched regularly and updates the database table properly. 1.) How can I now call the data in the database using Axios? As by my research Axios somehow needs to call a view and the view will call the data from the database, is this correct? 2.) If Axios needs to call a view, do I need another view.py file that calls the database?
If I would insert the needed view function into the existing view.py file it would initiate another API call, wouldn't it? 3.) And how can I implement the link to the view function to Axios? Instead of a third party API url would I just use the path to the view file? Vue.js/axios: (as of now directly fetching the API). In advance thank you very much for your help! 11 gold badge1010 silver badges3434 bronze badges.
3434 bronze badges. You can use DRF(Django Rest Framework) to make REST API's or You can use JsonResponseto send JSON objects as response.
Better would be if you use DRF for making rest apis. It's much easier.
Manas PaulManas Paul. You’re browsing the documentation for v2.x and earlier.
- For v3.x, click here. There are many times when building application for the web that you may want to consume and display data from an API.
- There are several ways to do so, but a very popular approach is to use axios, a promise-based HTTP client.
- In this exercise, we’ll use the CoinDesk API to walk through displaying Bitcoin prices, updated every minute.
- First, we’d install axios with either npm/yarn or through a CDN link. There are a number of ways we can request information from the API, but it’s nice to first find out what the shape of the data looks like, in order to know what to display.
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In order to do so, we’ll make a call to the API endpoint and output it so we can see it. We can see in the CoinDesk API documentation, that this call will be made to https://api.coindesk.com/v1/bpi/currentprice.json.
So first, we’ll create a data property that will eventually house our information, and we’ll retrieve the data and assign it using the mounted lifecycle hook:.
And what we get is this:. See the Pen First Step Axios and Vue by Vue (@Vue) on CodePen. We’ve got some data. But it looks pretty messy right now so let’s display it properly and add some error handling in case things aren’t working as expected or it takes longer than we thought to get the information.
It’s pretty typical that the information we’ll need is within the response, and we’ll have to traverse what we’ve just stored to access it properly. In our case, we can see that the price information we need lives in response.data.bpi.
If we use this instead, our output is as follows:. See the Pen Second Step Axios and Vue by Vue (@Vue) on CodePen. This is a lot easier for us to display, so we can now update our HTML to display only the information we need from the data we’ve received, and we’ll create a filter to make sure that the decimal is in the appropriate place as well.
There are times when we might not get the data we need from the API. There are several reasons that our axios call might fail, including but not limited to:. The API is down. The request was made incorrectly. The API isn’t giving us the information in the format that we anticipated. When making this request, we should be checking for just such circumstances, and giving ourselves information in every case so we know how to handle the problem.
In an axios call, we’ll do so by using catch. This will let us know if something failed during the API request, but what if the data is mangled or the API is down? Right now the user will just see nothing. We might want to build a loader for this case, and then tell the user if we’re not able to get the data at all.
You can hit the rerun button on this pen to see the loading status briefly while we gather data from the API:.
See the Pen Fourth Step Axios and Vue by Vue (@Vue) on CodePen. This can be even further improved with the use of components for different sections and more distinct error reporting, depending on the API you’re using and the complexity of your application.
The Fetch API is a powerful native API for these types of requests. You may have heard that one of the benefits of the Fetch API is that you don’t need to load an external resource in order to use it, which is true!
Except… that it’s not fully supported yet, so you will still need to use a polyfill.
This may very well change in the future though. If you’re interested in using the Fetch API, there are some very good articles explaining how to do so.
There are many ways to work with Vue and axios beyond consuming and displaying an API.
GET request using axios with error handling
You can also communicate with Serverless Functions, post/edit/delete from an API where you have write access, and many other benefits. Due to the straightforward integration of these two libraries, it’s become a very common choice for developers who need to integrate HTTP clients into their workflow. Caught a mistake or want to contribute to the documentation?Edit this on GitHub!Deployed onNetlify .
Vue doesn't have a built-in HTTP request library. The official Vue cookbook recommends using Axios to interact with REST APIs. This tutorial will use the excellent JSONPlaceholder API to provide sample data.
For example, if youtype https://jsonplaceholder.typicode.com/users/1 in your browser's URL bar, you'llget the below response:.
The axios.get() function executesan HTTP GET and returns a promise.
Remember that Vue hooks can be async functions. So that means you can use async/await to execute the Axios request.
Unfortunately, the above example as written won't work with Vue server-side rendering because:. Vue's renderToString() doesn't call mounted hooks, because the component is never actually mounted.
Vue's renderToString() doesn't wait for async hooks to execute, so even if you used created, the above example wouldn't work.
However, there is an easy workaround. Just call the mounted() function manuallyand await on it.
Browse other questions tagged sqlitevue.jsflaskaxios or ask your own question.
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Modified2 years, 9 months ago. So I am working on a project including Flask, VueJS, Sqlite3 and Axios.
I am trying to iterate through the array and show all the database information in HTML. If I 'refresh' the page the information is displayed. But I would like the information to update 'live' when I add information to the database from a 'POST' axios request to FLASK. I just put the critical code down below; I tried to make it shorter.
So the axios 'GET' request fetches the entire sqlite3 database; then saves it in the 'database' array.
The database has three columns; id, FIRST_NAME, LAST_NAME. I want the v-for to render anytime I add a value to the database or delete a value from the database.
It only rerenders when I refresh the page manually and the 'created()' function is called which resets the database.
The Axios works well in the platform like node.js and browsers. Vue.js Axios is a leading framework to Consume REST APIs is easy with them. Here all the example code is executed in Visual Studio Code with Node.js.
The Structure is given as :. Using Simple GET request.
Vue lacks a built-in HTTP library, so Axios library is recommended to keep interaction with REST API.
So here in this article, we have used JSON PLACEHOLDER API to take a few sample data for the application.
Generally, Axios makes HTTP requests like GET, POST, PUT, DELETE.
GET request using axios with set HTTP headers
The methods includes axios.get() and axios.post(). Axios has good benefits like supports older versions of browsers, JSON package transformations, and supports the upload process.
The Following working Steps to be followed:. 1.Installation- Axios. 2.Creating Vue.js App to start vue CLI app.
To install vue-Axios (HTTP Client), the following command is used:. Node JS Training Program (3 Courses, 7 Projects)3 Online Courses | 7 Hands-on Projects | 25+ Hours | Verifiable Certificate of Completion | Lifetime Access 4.5 (8,319 ratings).
The following sample code is reflected in main.js. To run a Vue app. This directs to http://localhost:8080. Installing Vue Dependencies. The next step is to create Components; it is done like src -> Components and adds the code inside the component files.
Finally, the sample demonstration is given in Example 1. To start an application, HTML declaration is done, which acts as a front-end UI. Secondly, to perform Vue.js Component. Lastly, add API to the vue.js Component. To handle errors in the Axios library ‘catch’ method is preferred as we use this in case of any network failure while requesting data. Using the Loading indicator while the page takes too much time to the respond from the backend.
In this section, we shall see how to use Vue.js and Axios together. Showing Simple Request Page. Next, this Java Script part shows application Logic.
Creating Basic Vue Application by building an HTML Page by creating html in editor. Fetching data from API’s through Vue.js Axios.
Explanation: To do this, we have already created a project in Vue using Vue-CLI, and next is by installing the Axios library as shown in the above Screenshot. So this example fetches data from the JSON API, which is created already, and we get that request by .get () in the code.
And now the output looks like this when you open a browser. Fetching data from the third party. Code: index.html. By now, we have understood the functionality of the application and the fundamentals.
This article would be a pretty starting point to handle API calls in any application and helpful in future projects. Therefore, we have achieved here how to send an HTTP request to the Node.js and fetches respective data from the database.
This is a guide to Vue.js Axios. Here we discuss How Axios works in Vue.js and Examples along with the codes and outputs.
You may also have a look at the following articles to learn more –. Below is a quick set of examples to show how to send HTTP GET requests from Vue to a backend API using the axios HTTP client which is available on npm.
Other HTTP examples available:. Vue + Axios: POST. Vue + Fetch: GET, POST. React + Fetch: GET, POST, PUT, DELETE. React + Axios: GET, POST, PUT, DELETE. Angular: GET, POST, PUT, DELETE. Blazor WebAssembly:GET, POST.