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When you save a layer to a new (or already existing) Geopackage, you can define the name of the field that contains the unique ID (called FID for Geopackage). When you add features, QGIS will autogenerate an incrementing number for the field defined as FID. By default, the field containing the FID is named fid, but you can change this: see the second ...


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If you want to define an input as a variable, first create an input, than use this input with Set project variable, give it a name and use the value of the input with Using model input (see screenshot). You can than use this variable with it's name in select by expression. Be sure that in the Select by expression dialog box (bottom left on the screenshot) ...


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Create a new point using Geometry by expression, than Merge vector layers to merge this newly created point layer with the inital points layer. Here you can download the model for this workflow. For manual input of x- and y-coordinate values that create the point, create two numbers. In geometry by expression, you can access these numbers (they are available ...


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I ended up using the "pre-calculated value" field and this format; @project_home || '/Files' || '/Style-Project-AOI-v2.qml' Maybe not so pretty, but hard-coded and works if you want to take the project home and subfolders with you on the road.


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I uninstalled OSGeo4W with QGIS 3.12.0 and installed 3.20.2 and the menu's back


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This was a bug in QGIS which was resolved with https://github.com/qgis/QGIS/pull/43716. It should now work with the latest QGIS LR / LTR releases (curently 3.20.2 / 3.16.10).


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So, it seems to be a bug: Nothing happens, when right clicking at the model via QGIS browser: "run model" and then start the model. It is probably related to the bug, that models simply do not run, when you drag&drop them into QGIS. Workaround: Right click at the model via QGIS browser: "edit model"; then no editing, but "start&...


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