Fix name of profile in field efficiency

docs/usage.rst

@@ -357,6 +357,22 @@ field names in the generators-profile resource.
 		non-valid resources.**
 
 
+If resources are passed with a key other than "profile" (e.g. marginal_cost or
+efficiency), the foreign keys must also be updated with this key. In this case,
+the name of the resource is composed of the components name and the key:
+
+.. code-block:: json
+
+    "foreignKeys": [
+      {
+        "fields": "marginal_cost",
+        "reference": {
+          "resource": "generator_marginal_cost_profile"
+        }
+      }
+    ]
+
+
 Scripting
 =========================
 Currently the only way to construct a model and compute it is by using the

src/oemof/tabular/datapackage/building.py

@@ -140,7 +140,9 @@ def infer_metadata(
                         r.descriptor["schema"]["foreignKeys"].append(
                             {
                                 "fields": key,
-                                "reference": {"resource": key + "_profile"},
+                                "reference": {
+                                    "resource": r.name + "_" + key + "_profile"
+                                },
                             }
                         )
 

src/oemof/tabular/examples/datapackages/foreignkeys/datapackage.json

@@ -115,7 +115,7 @@
                     {
                         "fields": "marginal_cost",
                         "reference": {
-                            "resource": "marginal_cost_profile"
+                            "resource": "component_marginal_cost_profile"
                         }
                     },
                     {
@@ -128,9 +128,9 @@
             }
         },
         {
-            "path": "data/sequences/component_profile.csv",
+            "path": "data/sequences/component_marginal_cost_profile.csv",
             "profile": "tabular-data-resource",
-            "name": "component_profile",
+            "name": "component_marginal_cost_profile",
             "format": "csv",
             "mediatype": "text/csv",
             "encoding": "utf-8",
@@ -142,12 +142,7 @@
                         "format": "default"
                     },
                     {
-                        "name": "electricity-load-profile",
-                        "type": "number",
-                        "format": "default"
-                    },
-                    {
-                        "name": "dispatchable-profile",
+                        "name": "marginal-cost-coal",
                         "type": "integer",
                         "format": "default"
                     }
@@ -158,9 +153,9 @@
             }
         },
         {
-            "path": "data/sequences/marginal_cost_profile.csv",
+            "path": "data/sequences/component_profile.csv",
             "profile": "tabular-data-resource",
-            "name": "marginal_cost_profile",
+            "name": "component_profile",
             "format": "csv",
             "mediatype": "text/csv",
             "encoding": "utf-8",
@@ -172,7 +167,12 @@
                         "format": "default"
                     },
                     {
-                        "name": "marginal-cost-coal",
+                        "name": "electricity-load-profile",
+                        "type": "number",
+                        "format": "default"
+                    },
+                    {
+                        "name": "dispatchable-profile",
                         "type": "integer",
                         "format": "default"
                     }
@@ -183,4 +183,4 @@
             }
         }
     ]
-}
+}

src/oemof/tabular/tools/postprocessing.py

@@ -21,7 +21,7 @@ def component_results(es, results, select="sequences"):
         setattr(es, "typemap", facades.TYPEMAP)
 
     for k, v in es.typemap.items():
-        if type(k) == str:
+        if isinstance(k, str):
             if select == "sequences":
                 _seq_by_type = [
                     views.node(results, n, multiindex=True).get("sequences")