How to Use Svelte With Routify For Routing?

8 minutes read

Sure! Svelte is a JavaScript framework that allows you to build user interfaces. Routify is another tool that helps in creating routes for your application. When using Svelte with Routify, you can effectively handle routing within your Svelte application.


To begin using Svelte with Routify, you need to follow a few steps:

  1. Install Routify: Start by installing Routify globally or within your project using npm or yarn.
  2. Set up a Routify project: Initiate a Routify project by running the appropriate commands in your terminal. This will create the basic template for your application.
  3. Define routes: Routify uses a file-based routing system. Create a folder structure to represent your routes and add corresponding Svelte component files within each folder. Each component file will represent a specific route of your application.
  4. Create a layout: A layout file defines the overall structure of your application, including the header, footer, and other common components. Create a layout component and include your routes within it. This layout will be shared across all routes and provides a consistent user interface.
  5. Set up navigation: Routify provides a component that you can use to navigate between routes in your application. Use this component to create navigation links within your layout or other components.
  6. Use dynamic routes: Routify allows you to define dynamic routes with placeholders. For example, if you have a route to display a user profile, you can define it as /user/:id, where :id represents the dynamic part of the URL. You can then access the dynamic value as a prop within the corresponding Svelte component.
  7. Handle nested routes: Routify supports nested routes, allowing you to create complex routing structures. You can create subfolders within your route folders to represent child routes. These child routes will be rendered within their parent component.
  8. Add route guards: Routify also provides route guards, which allow you to control access to certain routes based on certain conditions. You can define guards to handle authentication, authorization, or any other custom requirements.


By following these steps, you can effectively use Svelte with Routify to handle routing within your Svelte application. It helps in creating a structured and organized routing system, making your application more maintainable and user-friendly.

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How to load data asynchronously for a specific route with Svelte and Routify?

To load data asynchronously for a specific route using Svelte and Routify, you can follow these steps:

  1. Install the required packages: Svelte, Routify, and any other necessary packages for making HTTP requests like axios or fetch.
  2. Define your routes in the src/routes/_routes.js file.
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import { lazy } from 'routify';

const routes = [
  {
    name: 'home',
    path: '/',
    lazyComponent: import('./pages/Home.svelte'),
    // Define the async load function for this route
    async load() {
      const response = await fetch('https://api.example.com/data');
      const data = await response.json();

      return {
        data: data
      };
    }
  },
  // Add other routes as needed
];

// Lazy load the components
for (const route of routes) {
  route.lazyComponent = lazy(route.lazyComponent);
}

export { routes };


  1. In your Svelte component for the route (src/pages/Home.svelte in this example), use the $error and $isLoading stores provided by Routify to handle the loading and error states.
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<script>
  import { onMount } from 'svelte';

  export let data;

  onMount(async () => {
    if (!data) {
      // Fetch the data if it's not already available
      try {
        const response = await fetch('https://api.example.com/data');
        data = await response.json();
      } catch (error) {
        // Handle any errors
        console.error(error);
      }
    }
  });
</script>

{#if $isLoading}
  <p>Loading...</p>
{:else if $error}
  <p>Error loading data: {$error.message}</p>
{:else}
  <!-- Display the loaded data -->
  <ul>
    {#each data as item (item.id)}
      <li>{item.name}</li>
    {/each}
  </ul>
{/if}


With this setup, the data for the specific route will be loaded asynchronously when the component is mounted. The data prop is passed to the component, which could either be preloaded server-side or loaded asynchronously when the component mounts. The route's load function defined in _routes.js will be used to fetch the data and return it as props to the component.


How to redirect to a different route using Routify in Svelte?

To redirect to a different route using Routify in Svelte, you can use the goto function provided by Routify.


Here are the steps to redirect to a different route:

  1. Import the goto function from Routify in your Svelte component: import { goto } from '@roxi/routify';
  2. Use the goto function to redirect to a different route on an event or condition. For example, in a click event handler or after a successful AJAX request: goto('/new-route'); You can also include parameters in the route by passing an object as the second argument to the goto function: goto('/user/:id', { id: '123' }); In this case, ':id' is the parameter name specified in the route, and '123' is the value for the parameter.


That's it! Calling the goto function will navigate to the specified route, causing the browser's URL to change accordingly.


How to handle form submissions and data validations in Svelte with Routify?

To handle form submissions and data validations in Svelte with Routify, you can follow these steps:

  1. Create a form component: Create a Svelte component that includes your form HTML elements and form submission logic. For example, let's say you have a LoginForm.svelte component:
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<script>
  let email = "";
  let password = "";

  const handleSubmit = () => {
    // Do something with the form data
    // e.g., send POST request to server

    // Reset form fields after submission
    email = "";
    password = "";
  };
</script>

<form on:submit|preventDefault={handleSubmit}>
  <label for="email">Email:</label>
  <input type="email" id="email" bind:value={email} required />

  <label for="password">Password:</label>
  <input type="password" id="password" bind:value={password} required />

  <button type="submit">Submit</button>
</form>


  1. Add data validations: Add appropriate validation logic to your form component. For example, you can use conditional statements or regular expressions to validate email and password inputs.
  2. Import and use the form component: Import the form component into your page component (e.g., Login.svelte) and use it within the template.
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<script>
  import LoginForm from "./LoginForm.svelte";
</script>

<h1>Login</h1>
<LoginForm />


These steps allow you to handle form submissions and data validations in Svelte with Routify. You can customize the form validation logic and add error messages as per your requirements.

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