词汇：have

vt. 有；让；从事；允许；拿

相关场景

21:28:
So this server exists on this address, servers web: - demo.exitsoftware.io ; proxy: host: alpha.exitsoftware.io; And I will then fill out the host as a C name to that machine. But we're using Alpha here, if I had deployed another application called Bravo to the same server, Kamal would set it up, so it's like I host two applications or any number of applications on that same server! Now, we will also need to have a look at the secrets here, that is in dockyml/secrets, because the register that I'm using, that is Docker Hub, needs of course a password, it is using my username but also needs a password.
>> Rails 8.0.1 You are in good company
Now I'm gonna deploy this on my own little hoppy server. And that hoppy server is currently wiped. it is completely clean, and Ubuntu 24.04 setup that has nothing on it already, this is part of the magic of Kamal, you can spin up a new VM anywhere in the cloud or use your own hardware and point Kamal straight to it, and you'll be going in no time!
>> Rails 8.0.1 You are in good company
Docker Hub:
And there's a default configuration file in config/deploy.yml that we can use, it's prefilled a little bit, it has the service name of the name of reaction, but we need to rename, for example, your user,the name of the image to go to my name of where I store this on Docker Hub. You can see we change that down in the registry as well and the name of the container image.
>> Rails 8.0.1 You are in good company
Now, let's set things up to be dynamic, such that when we add a new comment to one of these, it's going to update the other as well. This is how we use web sockets in Rails using action cable, one of the frameworks that we have to create updates that are distributed automatically without folks having to reload their browser.
>> Rails 8.0.1 You are in good company
When it is nested, we get the fact that it's gonna be slash post slash on slash comments, and we have the association is set up nicely. Now, let's reload! Now it works, we have our comments field underneath. we can add the first comment. And as you can see here, this is my first comment a second ago that was the local time doing its time ago conversion.
当它被嵌套时，我们得到的事实是，它将是斜线后斜线对斜线注释，并且我们已经很好地建立了关联。现在，让我们重新加载！现在它工作了，我们在下面有我们的评论字段。我们可以添加第一条评论。正如你在这里看到的，这是我一秒钟前的第一条评论，当时当地时间正在进行时间转换。
>> Rails 8.0.1 You are in good company
Now that we have that up, we can hop in and look it all up into the show action for the posts! That's gonna reference that common slot comments, that includes both the comments and the new form.
>> Rails 8.0.1 You are in good company
And your comment is just be a text area for content. We could have made this a rich text field as well, but let's keep things simple and just keep it in plain text!
>> Rails 8.0.1 You are in good company
It'll automatically know that the comment model should map to view slash comment slash comment, so it can look up the right partial file to use. And then below that, we have the form that we're referencing with the comments new. So, let's hop in and paste in the individual comment. As you can see here, we just give it a div, that has a dom ID so that we can reference it.
>> Rails 8.0.1 You are in good company
16:03:
Now, we're also gonna add a number of partials here. This is the templating system, basically, a sub-routine that you can refer to. There's gonna be three of them that includes the entire comment section. We're gonna reference that in our post show in just a second. And within that, we're gonna refer to another partial for an individual comment, and another partial again for the new setup. So, let's paste some of that in here, You can see this for the entire collection, it just has an H2 for the comments, and we render the post comments. This again uses Rails' convention over the configuration approach.
>> Rails 8.0.1 You are in good company
So let's actually also create the other direction of this association. You saw a comment belongs to a post, but then we're also gonna make the post has many comments. Now, we have a bidirectional association that we can work with in both ways.
>> Rails 8.0.1 You are in good company
Alright, if we hop into that comments controller, it was empty. As you can see there, I'm gonna pay something in that actually makes this stuff work! You'll see one principle of the controller setup we have is that we have these callbacks. Before action, we're gonna set posts. So before all the actions, we're going to reflect the fact that this is nested resource.
>> Rails 8.0.1 You are in good company
So, let's run the migration for that, that sets up the comments table. You can see here the schema that we've now built up. We've added a number of tables for action text and action storage. And then, we have added a comments table. That's what you can see here. As we had it in the migration where we were just referencing the post as a foreign key, and then we had the content as text.
>> Rails 8.0.1 You are in good company
Now again, if you don't want any of this stuff, there is a way using JS bundler dash Rails to set things up in a more traditional way using ES build and what have you. But this is a wonderful way of developing modern web application.
>> Rails 8.0.1 You are in good company
But we can also have a look at a specific file, you'll see it matches exactly what we have back there. That's not a development setup! That is what we're shipping in production. There is no minification, there's no transpilation, there's none of that nonsense because you just don't need it.
>> Rails 8.0.1 You are in good company
He has temporarily put his books on the floor. They won't be there long.
>> 52-A Pretty Carpet
inspector:
But really, what's unique here for Rails is the fact that we're using no build by default! So if I go over here in the inspector and look at the JavaScript files that are included,you can see we have the application js file with a little digest stamp on there. If we change anything that application js file, the digest is going to change, and the browser will redownload just the part!
>> Rails 8.0.1 You are in good company
zoo:
And we will give it a format for what it should do with UTC timestamp, and turning it into a local time that we can have a look at.So if I reload here, you see it is November 13th, by the time of my recording at 3:28 PM in my local time zone, but actually underneath, the time tag is gonna be in UTC. That means we can cache this, and anyone around the world will still get the time displayed in their local time.
>> Rails 8.0.1 You are in good company
And we're gonna start local time here. And in the local time, we're gonna use it, and we're gonna use it for adding the updated at timestamp here. And as you can see here, we're just adding a time tag that's just a vanilla HTML tag that has a data local time that's what activates that local time JavaScript set up.
>> Rails 8.0.1 You are in good company
But now that we've add that, let's have a look at our application JS file.That's the default setup that you have that the scaffold is going to use. And as you can see, we're using turbo-rails, we're including all the stimulus controllers, if we have any.
>> Rails 8.0.1 You are in good company
So, we can do that using the import map pin command. And as you see, now that I hop back into our config import map, we've added the local text pin at the bottom, version 3.0.2. It pulled that straight off NPN, it downloaded that as a vendor dependency that we can check into our version control system. And now, we don't have any runtime dependency whatsoever on NPN, or anything else like that.
>> Rails 8.0.1 You are in good company
And then, there's the stimulus framework for creating that additional functionality that you might need in a really simple way. You can have a look at hotwire.dev to see more about that, but what we're gonna add here is a little piece of JavaScript to just add some additional functionality, pulling something in from pin.
>> Rails 8.0.1 You are in good company
As you can see here, there is now a full WYSIWYG interface for creating the body. It comes with a default set of styles for the toolbar, you can change those, those styles are generated straight into your application, so you can make it look nice for yourself. Let's give some bold and italic text here, you see, that was all that was needed. but I think what's even nicer to look at here is if we do an upload and we add a file, you will see that file gets added with a preview directly to the WYSIWYG editor. And if we save that and we update the post, it is added to the post itself. And that then went through the whole process of doing a direct upload of the file when we dropped it into the editor, that uploads it straight to active storage. And then, we have access to that, and rendering it directly from whatever storage backend active storage is using. In this example , we're just storing on disk, but you could be storing your active storage in S3 or another object storage.
>> Rails 8.0.1 You are in good company
But before we can do that, let's change the text area we had in the form here for our new post to be a rich text area. "form.rich_textarea :body". That's basically all you have to change, and let's save that and hop back into creating a new post.
>> Rails 8.0.1 You are in good company
If we then hop into our post model, we can declare that post model has rich text body. We're gonna convert the plain text body that we had just a second ago to a rich text body that is accessible through the WYSIWYG editor, and that accepts those active storage attachments and uploads.
>> Rails 8.0.1 You are in good company
Active Storage is a way to deal with attachments and other files in your Rails application. When you run it through action_text:install, it'll automatically set up those active storage tables that we need, there is one for blob,and then we have one for text here.We run migrations to set that up again, and now that we've run action_text:install, it also added a couple of gems, so we need to restart our development server. I do that just by exiting out and just running the server again!
>> Rails 8.0.1 You are in good company