asked 2019-12-17 13:10:22 +0200
This post is a wiki. Anyone with karma >75 is welcome to improve it.
sync() doesn't seem to have any effect. answered 2019-12-18 11:52:33 +0200
I did some more research. It seems like I got an error in my app.
This minimal example works:
ConfigurationValue {
id: array
key: "/apps/test/array"
defaultValue: []
}
Label { text: "entries: " + array.value.join() }
Label { text: "length: " + array.value.length }
Button {
text: "push1"
onClicked:{
var a = array.value
a.push("e" + a.length)
array.value = a
console.log(typeof array.value, array.value)
}
}
Button {
text: "reset"
onClicked: array.value = array.defaultValue
}
This one doesnt:
ConfigurationGroup {
id: cg
path: "/apps/test/group"
property var array: []
}
Label { text: "entries: " + cg.array.join() }
Label { text: "length: " + cg.array.length }
Button {
text: "push"
onClicked:{
var a = cg.array
a.push("e" + a.length)
cg.array = a
console.log(typeof cg.array, cg.array)
}
}
Button {
text: "reset"
onClicked: cg.array = []
}
PS: Also it seems I posted this already in the list :) https://lists.sailfishos.org/pipermail/devel/2017-November/008088.html
Just for info: Actually I'm using the ConfigurationValue nested inside a group like this:
ConfigurationGroup {
id: settings
path: "/apps/testapp"
property int someInt: 42
property ConfigurationValue array: ConfigurationValue {
key: settings.path + "/array"
defaultValue: []
}
}
Label { text: "entries: " + settings.array.value.join() }
Label { text: "length: " + settings.array.value.length }
Button {
text: "push"
onClicked:{
var a = settings.array.value
a.push("e" + a.length)
settings.array.value = a
console.log(typeof settings.array.value, settings.array.value)
}
}
answered 2019-12-19 11:55:33 +0200
This post is a wiki. Anyone with karma >75 is welcome to improve it.
After I made my first app for SFOS, someone asked me why I had both a wrapper around QSettings (Nemo.Configuration wasn't allowed in Harbour AFAIRC?), and a wrapper around LocalStorage.
At that time it was just to feel this new platform on it's teeth to see what could be used; now my answer is, that it's just not worth the effort to manipulate lists, especially lists of objects, that way. That's what a database is for, and doing it that way would be trying to reinvent the wheel, just more error prone and difficult to maintain.
I already use a simple database layer, that I use in my other apps, and I will just make a couple of methods and it's done and tested.
I have marked @michfu's answer as accepted, because it's the correct answer to my question, and solves the issue of storing simple arrays.
Asked: 2019-12-17 13:10:22 +0200
Seen: 245 times
Last updated: Dec 19 '19
It was already possible, but is not anymore. I stored an array of objects with a ConfigurationValue. It never worked as a property of a ConfigurationGroup
...but since some time this also doesn't work anymore.
michfu ( 2019-12-17 18:23:24 +0200 )editOK, thanks. So maybe this should be changed to a bug report. I have no idea where to submit an actual report though.
Tanghus ( 2019-12-17 19:37:36 +0200 )edit