Feature request #11680
List layers name in functions panel within "select by expression" dialog
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Many persons try to use geometric function provided in "select by expression" dialog or "field calculator"'s. But these functions are (or were) quite limited because unless you use atlas'related functions, there was no way to use them among different layers (Or maybe, I didn't find). It was a real lack.
With Brighton, Enrico Ferreguti released a plugin refFunctions that allows to use in the same request features from different layers with functions like within, intersects and so on...
But I think to improve all this, it's necessary to offer to the user, a category that lists all the layers in the project. So with a double-click, he can add it to the request (as it currently does with layer's field and other functions)