Create company page tab "Beteiligte Personen" (#330)

src/aki_prj23_transparenzregister/ui/company_elements.py

@@ -249,6 +249,9 @@ def create_tabs(session: Session, selected_company_id: int) -> html:
                         value="tab-2",
                         className="tab-style",
                         selected_className="selected-tab-style",
+                        children=[
+                            person_relations_layout(selected_company_id, session)
+                        ],
                     ),
                     dcc.Tab(
                         label="Stimmung",
@@ -270,6 +273,59 @@ def create_tabs(session: Session, selected_company_id: int) -> html:
     )
 
 
+def person_relations_layout(selected_company_id: int, session: Session) -> html:
+    """Create person relation tab.
+
+    Args:
+        selected_company_id: Id of the chosen company in the dropdown.
+        session: A session connecting to the database.
+
+    Returns:
+        The html div to create the person relations tab of the company page.
+    """
+    relations = data_elements.get_person_relations_of_one_company(
+        selected_company_id, session
+    )
+    if relations.empty:
+        return html.Div(
+            className="choose-metric",
+            children=[
+                html.H3(
+                    className="metrics-title",
+                    children=[
+                        "Für dieses Unternehmen wurden leider keine beteiligten Personen gefunden."
+                    ],
+                )
+            ],
+        )
+    table = (
+        relations[["firstname", "lastname", "relation", "date_from", "date_to"]]
+        .fillna("n.a.")
+        .rename(
+            columns={
+                "firstname": "Vorname",
+                "lastname": "Nachname",
+                "relation": "Rolle",
+                "date_from": "Von",
+                "date_to": "Bis",
+            }
+        )
+    )
+    return dash_table.DataTable(
+        table.to_dict("records"),
+        [{"name": i, "id": i} for i in table.columns],
+        style_table={
+            "width": "80%",
+            "marginLeft": "auto",
+            "marginRight": "auto",
+            "padding": "20px",
+            "color": COLORS["raisin-black"],
+        },
+        style_cell={"textAlign": "center"},
+        style_header={"backgroundColor": COLORS["light"], "fontWeight": "bold"},
+    )
+
+
 def network_layout(selected_company_id: int) -> html:
     """Create network tab.
 

src/aki_prj23_transparenzregister/ui/data_elements.py

@@ -116,3 +116,39 @@ def get_options(session: Session | None) -> dict[int, str]:
     all_options = pd.concat([persons_options, companies_options])
 
     return all_options.sort_values(ascending=True).to_dict()
+
+
+def get_person_relations_of_one_company(
+    selected_company_id: int, session: Session
+) -> pd.DataFrame:
+    """Collects all person relations of one company.
+
+    Args:
+        selected_company_id: Id of the company.
+        session: A session connecting to the database.
+
+    Returns:
+        A dataframe containing all person relations of the selected company.
+    """
+    data = (
+        session.query(
+            entities.Company.id,
+            entities.PersonRelation.relation,
+            entities.PersonRelation.date_from,
+            entities.PersonRelation.date_to,
+            entities.Person.id,
+            entities.Person.lastname,
+            entities.Person.firstname,
+        )
+        .join(
+            entities.PersonRelation,
+            entities.PersonRelation.company_id == entities.Company.id,
+        )
+        .join(
+            entities.Person,
+            entities.PersonRelation.person_id == entities.Person.id,
+        )
+        .filter(entities.Company.id == selected_company_id)  # type: ignore
+        .all()
+    )
+    return pd.DataFrame(data)