signedav

It seems that while working with WAL we could loose data we digitized on QField after synchronizing.

Simple tests on QField:

copied the project to my mobile
edits
copied the project to computer and sync (without closing on mobile)

-> changes are not synchronized

With closing:

für for( const A& a : b ) vorher e const Kopie vom Container mache (const B b = x.getSomeList();) Usnahm: wänns inere const-Funktion ufere member-Variable isch

Relation Editor Widget on QField

Here are the use cases and how the relation editor widget could look in qfield with the different behavior for one-to-many and many-to-many relationships.

1:N Relations

The childfeatures are listed. In any case, the delete icons is black *1. This means the child features will be deleted.

By pressing on the feature the "embedded" Form pops up:

Vorarbeiten

Erstellen aller Tables:

- Stardardaufnahmen 
- Forstliche Langzeitprojekte
- Backoffice
- Sonderaufnahmen
- Referenztables
- Basisdatentabellen (gebraucht für Views)

Wird von DB gemacht -> mit dump restoren und darauf aufbauen.

	2019-01-22 10:00:53.783 CET [4912] LOG: Anweisung: set client_encoding to 'UNICODE'
	2019-01-22 10:00:53.784 CET [4912] LOG: Anweisung: select regclass('pg_class')::oid
	2019-01-22 10:00:53.785 CET [4912] LOG: Anweisung: BEGIN
	2019-01-22 10:00:53.786 CET [4912] LOG: Anweisung: DECLARE oidcursor BINARY CURSOR FOR select regclass('pg_class')::oid
	2019-01-22 10:00:53.786 CET [4912] LOG: Anweisung: fetch forward 1 from oidcursor
	2019-01-22 10:00:53.787 CET [4912] LOG: Anweisung: CLOSE oidcursor
	2019-01-22 10:00:53.787 CET [4912] LOG: Anweisung: COMMIT
	2019-01-22 10:00:53.788 CET [4912] LOG: Anweisung: SELECT postgis_version()
	2019-01-22 10:00:53.794 CET [4912] LOG: Anweisung: SELECT postgis_geos_version(),postgis_proj_version()
	2019-01-22 10:00:53.795 CET [4912] LOG: Anweisung: SELECT EXISTS ( SELECT c.oid FROM pg_class AS c JOIN pg_namespace AS n ON c.relnamespace=n.oid WHERE n.nspname='topology' AND c.relname='topology' )

	cd 3rdparty/ && ( test -e Makefile \|\| /home/david/Qt/5.9.4/android_x86/bin/qmake -o Makefile /home/david/dev/opengisch/QFieldWork_camfix01/3rdparty/3rdparty.pro -spec android-g++ CONFIG+=debug CONFIG+=qml_debug ) && make -f Makefile
	make[1]: Entering directory '/home/david/dev/opengisch/build-QField-Android_for_x86_GCC_4_9_Qt_5_9_4_for_Android_x86-Debug/3rdparty'
	cd tessellate/ && ( test -e Makefile \|\| /home/david/Qt/5.9.4/android_x86/bin/qmake -o Makefile /home/david/dev/opengisch/QFieldWork_camfix01/3rdparty/tessellate/tessellate.pro -spec android-g++ CONFIG+=debug CONFIG+=qml_debug ) && make -f Makefile
	make[2]: Entering directory '/home/david/dev/opengisch/build-QField-Android_for_x86_GCC_4_9_Qt_5_9_4_for_Android_x86-Debug/3rdparty/tessellate'
	make[2]: Nothing to be done for 'first'.
	make[2]: Leaving directory '/home/david/dev/opengisch/build-QField-Android_for_x86_GCC_4_9_Qt_5_9_4_for_Android_x86-Debug/3rdparty/tessellate'
	make[1]: Leaving directory '/home/david/dev/opengisch/build-QField-Android_for_x86

	1 std::__atomic_base<int>::operator-- atomic_base.h 304 0x4250aa
	2 QAtomicOps<int>::deref<int> qatomic_cxx11.h 271 0x7ffff67be415
	3 QBasicAtomicInteger<int>::deref qbasicatomic.h 114 0x7ffff67be315
	4 QExplicitlySharedDataPointer<QgsCoordinateTransformContextPrivate>::~QExplicitlySharedDataPointer qshareddata.h 165 0x7ffff6c02b1d
	5 QgsCoordinateTransformContext::~QgsCoordinateTransformCon

	from qgis.PyQt import QtWidgets

	project = QgsProject.instance()
	layer = QgsProject.instance().mapLayer('[% @layer_id %]')

	layer.startEditing()

	feature_count=0
	children_info=''
	for f in layer.selectedFeatures():