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Whether you need help validating your YAML data or converting it to another format, there's a good number of tools online to help you out. In this lesson, we'll take a look at a couple of them. Before I start however, I do want to caution you in searches to look out for the other YAML. Yes I know it's hard to believe that someone could name another web technology YAML, but it's out there. The other YAML is a CSS framework. So, when you search for tools for YAML data, you might want to exclude CSS.
You can do this just by adding a negative sign, also known as a hyphen, in front of CSS, like I've done here. Okay? The first tool I want to introduce you to is the YAML Online Parser. This is really a nice multi-purpose utility that not only allows you to convert your YAML file to JSON, it can also serve to validate your YAML. Let me demonstrate that capability first. So I have a YAML file called data.yaml from chapter 5>05_04 folder open in my code editor.
I'm going to select all the code, and then copy it, and then go back to the YAML Online Parser where I can paste it in. So I'll paste it in on the left side here. Again, I'll just select everything and delete that in order to put it in. And instantly it converts it to whatever I have selected. So, I have JSON selected here as the output. You can see that down below the left text area. Although it doesn't say so explicitly, the successful conversion actually serves to validate your code.
Now, watch what happens if I put in a errant square bracket, down here. Let's say, right below the last price item is. So, I'll make a little line and put in a square bracket. Immediately, I get an error message pinpointing the problem. Nice. Right? Of course, you can also use it to convert your YAML code to JSON or Python, just by choosing a radio button. You also have the option to see your code in what is referred to as canonical YAML, or the authorized version.
Choosing this option, after I get rid of the little error there, will give you a very verbose result that identifies sequences and types the data, as for example, a string or an integer. The other tool that I want to bring to your attention is also a converter, but a more robust one. Go to iTools.org/unserialize to bring in your YAML data and paste it in upload it, or provide a URL for a posted file. I want to bring in some JSON data.
So, let's head back to our code editor. And I have a data.json file there, also from the same exercise file folder. So I'll select all, then copy everything back to our browser. There is a direct input field here that I can paste it into. And once I paste it in, let me scroll down, you can see down below that there are a number of options. I can have it detect it automatically, or I can say no I'm working with JSON, and what do I want to convert it to.
Now this is called a unserializer, so it really will allow you to output unserialized data, which is in this case used for PHP. But we're not really interested in that, we want it to go to YAML. So, I'll switch it to YAML, and then click the Unserialize button, and there's my YAML code. Pretty sweet, eh? Now, I'll go back. And as you can see, there are numerous formats to choose from for both the input and the output.
As the usage of YAML rises, it's especially popular with the Ruby on Rails developer crowd, more and more online tools are sure to surface.
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