Merge branch 'fix_compiler_error_with_onedgrid' into 'master'

OneDGrid does not have method leafbegin (anymore?)

See merge request !6

dune/gfe/geodesicfefunctionadaptor.hh

@@ -47,10 +47,14 @@ static void geodesicFEFunctionAdaptor(GridType& grid, std::vector<TargetSpace>&
     P1NodalBasis<typename GridType::LeafGridView> p1Basis(grid.leafGridView());
     x.resize(grid.size(dim));
 
-    for (const auto& element : elements(grid.leafGridView()))
-    {
+    for (const auto& element : elements(grid.leafGridView())) {
+
         // Set up a local gfe function on the father element
+#if DUNE_VERSION_NEWER(DUNE_GRID,2,4)
         size_t nFatherDofs = element.father().subEntities(dim);
+#else
+        size_t nFatherDofs = element.father()->template count<dim>();
+#endif
         std::vector<TargetSpace> coefficients(nFatherDofs);
 
         for (int i=0; i<nFatherDofs; i++)
@@ -63,8 +67,11 @@ static void geodesicFEFunctionAdaptor(GridType& grid, std::vector<TargetSpace>&
         // The embedding of this element into the father geometry
         const auto& geometryInFather = element.geometryInFather();
 
+#if DUNE_VERSION_NEWER(DUNE_GRID,2,4)
         size_t nDofs = element.subEntities(dim);
-
+#else
+        size_t nDofs = element.template count<dim>();
+#endif
         for (int i=0; i<nDofs; i++) {
 
             if (dofMap.find(idSet.subId(element,i,dim)) != dofMap.end()) {