Given that I work with almost entirely JSON data, I find myself now lamenting
the QML ListModel. Even The JSONListModel that can be found online isn't great.
It all suffers from the same flaws as ListModel. My major complaint is that
models, don't use a length property and instead use count, that you have
specialized access with count, get, set, append and setProperty. Why can't we
use the standard JSON manipulation tools and just set a ListModel to an array
of a JSON object. Also some basic filter function would go a long way to
reducing the number of marshaling functions I need to write.
Ideally, I'd like the Following:
JSONModel {
obj: {name: 'Test model', data: [{a:1, b:2], [{a:3, b:4]}}
listProperty: 'data'
filter: function (item) { return item.a >2 } // if true, it's in the model
default function is {return true}
}
In this way, I wouldn't have to write all these function to marshall data into
and out of ListModels. I realize there might be an issue with raw JS access to
the object itself (i.e. model.obj.data[0].a=4, however I'd much rather call
model.sync() on those changes rather than write all these functions that just
do appends(). Another way to handle the update issue is to use Observable
pattern, like in Knockout and Angular.
And lastly, could we get the standard accesses aliased? At least: append->push
count->length get->[]
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