Livewire 1

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So, I really love writing JavaScript. React plus TypeScript is some of my favorite code to write. One of the things I've done a lot of is build drag and drop user interface builders, React is amazing for that.

A lot of the development I do right now for my job is internal applications to help development and support of Ninja Forms. I am mainly working with Laravel. The complexity in these projects is scaling databases and processing a ton of data. On the other hand, the UI requirements are very basic -- mainly HTML tables and some graphs.

Initially, I was using Laravel as a headless API and for scheduled task processing. The user interface was a decoupled NextJS front-end. Starting a project with Next and Tailwind is a great way for me to get started. Also, it was totally overkill, and I had to figure out CORS and authentication. Sure, that is worth it in some cases, but I was building a UI for like 3 people to use.

So this was a perfect opportunity to try out LiveWire. I was able to build dynamic components that switch between tables and graphs as well as handle pagination and live search. All with out page re-loads.

Livewire got me out of the "everything has to be an app" mindset. AJAX for pagination? That improves UX when searching. A full page refresh between screens that are for totally different data? Chill, it's fine.

For this app, I created one Livewire component per page. This was a little awkward, as it meant in addition to the PHP class for the component, I had a blade file with the layout for the page, with a livewire component tag and I had a blade file for the component.

This is too many files for me, but it does mean that only part of the page is a Livewire component. What's neat about it is that the rest of the page is just a normal blade file. There could be other Livewire components. Or other JavaScript can be used for other parts of the page.

This blade file has to "wire" bindings, that's where the magic happens. The first on the input is wire:model="url". This binds the value of the property of the component PHP class to this input. I just needed to add a public property called URL to make it work:

I used a typed property to force the value to string. That can cause issues with using the value server-side, for example, in the create callback of this method. If the input is never changed, the value of $this->url will be null, which is not a string, and therefore there is an error.

My solution is to set it the property to an empty string using the mount() method of the class. That method, gets called before render, which renders the blade template on the server and sets up whatever magic keeps the client in sync with the server.

Anyway, back to the component for creating a site. We were discussing bindings and magic. The second binding is wire:click="create". This binds the click event of the button to the PHP class method create.

As I mentioned earlier, in the first project I used Livewire on, I did not use full page components. This approach allows for composing the page out of HTML, one or more Livewire components, and could include other frameworks.

Not every website needs to be a complete single page web application. Working with Livewire has reminded me that a traditional page navigation isn't such a bad thing. That page refresh prepares the user for a change, and it wipes out the unrelated state.

Livewire, especially with Jetstream is a great tool for building Laravel UI quickly. That makes it a great fast prototyping tool that should force you to ask the question -- do I need to replace this with a full SPA? Probably not, Livewire is very good.

This post is a brief intro to Livewire and why I think it is good. That said, I think I covered most of the important things you need to know. The docuemntation is quite good. If you sponsor the creator of the framework, Caleb Porzio on Github, you will get access to screencasts about using Livewire.

Only a side note. Every client action will result in a server ajax call. Yes, fully automated. But I don't want every click on a plus or a minus or on an accordion will make an ajax call. This cannot scale

If it was something with a lot of clicks, I'd write some client-side JavaScript to handle it. What I actually used this for was pagination, search, and other things that the end user perceives as page changes, this makes it faster for them.

Nice article!!! LiveWire makes development experience more alike desktop/mobile apps where the state is preserved between the actions, sure this is a trick with ajax calls, but works very well and the developers are happy!! hahah

I had a brief look at livewire and hotwire - and I love the concepts behind them. I really dislike having to choose between making a SPA or a server side site, the two paradigms are so different and hard to mix. If I understand live-/hotwire right it could mean a single paradigm for both client and server data manipulation, which I haven't experience since visual basic 6 :P To be able to model a regular PW site and then sprinkle it with app-like behaviours here and there would be absolutely incredible.

I almost considering stepping over to Laravel for this reason, but it's a big step for me. Neither livewire or hotwire seems to exist without Rails or Laravel. So this seems to be a must. Anyone had experience with this, or something similar? Is there something similar that would work with PW?

+1

I am working on my first Unpoly driven frontend and loving it so far. With so little code one can do a lot! What I'm aiming at the most is this: no businness data validation / calculation / transformation / whatsoever on the frontend, only in PHP at server side!

What they solve (including Unpoly) is not exactly that, but one can code all the "businness data manipulation" on the server only, and use these JavaScript libraries to implement an app like behavior in the browser relatively easily (especially in the case of Unpoly). One still needs to find the "right" backend framework/CMS/CMF that fits ones need and implement the HTML rendering for the frontend as required by the chosen JavaScript framework.

I'm building an admin panel in TALL (Laravel 7) + Turbolinks. One section only includes a Livewire component that shows a paginated table of Product elements and a search field (the only "strange" thing that I'm doing before this is injecting a Market model instance to the request in a middleware).

The problem arises when I go to /products route where is the livewire component included nothing works... The records of the first page are fine, but pagination links are dead and search field does nothing, no console errors, no livewire errors, it's like javascript is not working at all, and here's the strangest thing: if I reload the page, the Market data I loaded in middleware is added to the query string and everything starts working as intended.

It's important that you use the $this->form->fill() method instead of assigning the data directly to the $this->data property. This is because the post's data needs to be internally transformed into a useful format before being stored.

In some cases, the form's model is not available until the form has been submitted. For example, in a Create Post form, the post does not exist until the form has been submitted. Therefore, you can't pass it in to $form->model(). However, you can pass a model class instead:

On its own, this isn't as powerful as passing a model instance. For example, relationships won't be saved to the post after it is created. To do that, you'll need to pass the post to the form after it has been created, and call saveRelationships() to save the relationships to it:

In all of our previous examples, we've been saving the form's data to the public $data property on the Livewire component. However, you can save the data to individual properties instead. For example, if you have a form with a title field, you can save the form's data to the $title property instead. To do this, don't pass a statePath() to the form at all. Ensure that all of your fields have their own public properties on the class.

By default, the InteractsWithForms trait only handles one form per Livewire component - form(). To add more forms to the Livewire component, you can define them in the getForms() method, and return an array containing the name of each form:

Filament is also able to generate forms for a specific Eloquent model. These are more powerful, as they will automatically save the data in the form for you, and ensure the form fields are properly configured to access that model.

By default, passing a model to the make:livewire-form command will result in a form that creates a new record in your database. If you pass the --edit flag to the command, it will generate an edit form for a specific record. This will automatically fill the form with the data from the record, and save the data back to the model when the form is submitted.

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