Read & Write JSON file || Basics

[Chazrox]

@d-healey Thank you!

check my edit just in case.

[Chazrox]

@d-healey Im writing to a .json file and saving into UserPresets root folder. Is that all good?

[d.healey]

@Chazrox said in Read & Write JSON file || Basics:

UserPresets root folder. Is that all good?

You should only put user presets in there. If you want to save to a fixed location use the app data folder. https://docs.hise.dev/scripting/scripting-api/filesystem/index.html

[Chazrox]

@d-healey I was trying that one and I couldnt find where the file was going to.

Is AppData a folder within the plugin or is that a system folder?

[d.healey]

@Chazrox said in Read & Write JSON file || Basics:

Is AppData a folder within the plugin or is that a system folder?

It's a system folder - it's where the UserPresets folder lives, among other things.

• GNU/Linux: /home/username/.config/Company Name/Plugin Name/
• Windows: Users/username/AppData/Roaming/Company Name/Plugin Name/
• MacOS:~/Library/Application Support/Company Name/Plugin Name/

You can open it from the File menu in HISE btw.

[Chazrox]

@d-healey got it.

So I got that much working, the part im missing is....

How do I add new pairs to the object after its created?

[Chazrox]

wait dont give me the answer yet....im getting it. lol.

[Lindon]

@Chazrox said in Read & Write JSON file || Basics:

wait dont give me the answer yet....im getting it. lol.

hint - arrays are json "objects" too

[Chazrox]

@Lindon

via GIPHY

[Lindon]

@Chazrox

// create an array for objects
const var myObjectSet = [];
// Create an object
const myObj = {"name": "Dave", "age": 38, "country": "England"};
myObjectSet.push(myObj);

const myObj2 = {"name": "Lindon", "age": 150, "country": "England"};
myObjectSet.push(myObj2);

Console.print(trace(myObjectSet));

[Chazrox]

@Lindon nice! That was it! I get it now.

I just recently got comfortable sorting, cloning, flipping arrays so if this is anything like that im off to a good start.

Huge breakthrough for me here. haha.

Thank You @d-healey & @Lindon !

@Lindon said in Read & Write JSON file || Basics:

hint - arrays are json "objects" too

So are all array api's available for these too?

[Lindon]

@Chazrox said in Read & Write JSON file || Basics:

So are all array api's available for these too?

Arrays are just arrays - so yes the array API is applicable to them...but your array elements are "complex" objects so heaven knows how stuff like sort would work - if at all....

[Chazrox]

@Lindon Ok. I'll do some reading on that too.

@Lindon said in Read & Write JSON file || Basics:

heaven knows...

[d.healey]

@Lindon said in Read & Write JSON file || Basics:

but your array elements are "complex" objects so heaven knows how stuff like sort would work - if at all....

Custom sort function

[Chazrox]

@d-healey

can you take a look at this please?
// Im trying to add 'newPreset' to 'AttackTablePresets'

const var AttackTablePresets = 
{
		
	"name": "36...............vOLVxe+....9izwDzO...f+....9C...vO", 
	"name2": "36...............vOLVxe+....9izwDzO...f+....9C...vO", 
	"name3": "36...............vOLVxe+....9izwDzO...f+....9C...vO"
		
};

// SAVE PRESET BUTTON CONTROLS
inline function onSaveOkControl(component, value)
{	

	
	if (value)
	{
		local tableData0 = TableEnvelope1Pro.exportAsBase64(0);		
		local newPreset = {Newshit : tableData0};
		
		AttackTablePresets.insert(newPreset); 

// Im trying to add 'newPreset' to 'AttackTablePresets'
		
		Console.print("START TRACE" + trace(myObjectSet) + "END TRACE");
	}
};
Content.getComponent("SaveOk").setControlCallback(onSaveOkControl);

[d.healey]

@Chazrox

const myObj = {"name": "Dave", "age": 38, "country": "England"};

// To add something new you can use dot notation
myObj.newKey = newValue;

// Or you can use bracket notation - only really needed if you have spaces in the key or are using a variable to hold the key
myObj["newKey"] = newValue;

@Chazrox said in Read & Write JSON file || Basics:

AttackTablePresets.insert(newPreset);

This is for arrays, not objects. I think Lindon confused you :)

[Chazrox]

@d-healey oh wow..how do I find the rest of the dot.functions?

[d.healey]

@Chazrox It's not a function, it's accessing the property of the object.

Just like when you use .length to find out how many characters are in a string or elements in an array. If it doesn't have () at the end then it's not a function.

You're going to love my scripting course :)

[Chazrox]

@d-healey

@d-healey said in Read & Write JSON file || Basics:

You're going to love my scripting course :)

I cant wait! Im there!

When I say I watch all of your videos...

I mean it. lol. (muuuultiple times and still learning always)

[Chazrox]

@d-healey

I combined everything to try to do everything at once..

1. export table state
2. push new preset to 'AttackTablePresets'
3. push 'name' to combobox.

this is working so far...but my presets in the combobox keep disappearing every couple of times I press save.

see it saved a few presets, but at some random point it just dissapears.

// SAVE PRESET BUTTON CONTROLS
inline function onSaveOkControl(component, value)
{	
	local f = FileSystem.getFolder(FileSystem.Desktop).getChildFile("myFile.json"); 
	f.writeObject(AttackTablePresets);
	
	if (value)
	{
		
		local tableData0 = TableEnvelope1Pro.exportAsBase64(0);
		local presetNameNOW = PresetNameToSave.get("text");

		AttackTablePresets[presetNameNOW] = tableData0;
		
		local keyList = [];
		
		for (k in AttackTablePresets)
		{
			keyList.push(k);
		}
		
		PresetList.set("items", keyList.join("\n"));
	}
};
Content.getComponent("SaveOk").setControlCallback(onSaveOkControl);