fix(compare): give the trends chart a real height (was squashed to ~150px)

ComparisonChart runs Chart.js with maintainAspectRatio:false, so it sizes
to its container's height — which must be definite. TrendsExplorer gave
.chartBox a min-height, which doesn't resolve the chart wrapper's
height:100%, so Chart.js fell back to its ~150px default: a squashed
8.6:1 sliver that didn't match the mockups. Set a definite height (420px
desktop, 360px mobile where the chips row sits above the canvas).

Verified on staging by patching the live height: canvas went from
1287x150 to 1287x392 (desktop) / 284 (mobile) — proper ~3:1 proportions
matching the mockup, with the England dashed line, COVID/2021-22 gap and
table all reading correctly.

An e2e guard asserts the trends canvas is taller than 220px so the
squash can't regress.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0146VHeLAWjDVE2B5uU67jCB

.gitea/workflows/pr-checks.yml

@@ -5,13 +5,6 @@ on:
     branches:
       - main
 
-# Cancel superseded runs: pushing a new commit to a PR (or an empty
-# re-trigger) aborts the previous still-running checks instead of running
-# a second full matrix alongside them.
-concurrency:
-  group: pr-checks-${{ gitea.event.pull_request.number }}
-  cancel-in-progress: true
-
 env:
   REGISTRY: privaterepo.sitaru.org
   BACKEND_IMAGE_NAME: ${{ gitea.repository }}-backend
@@ -30,22 +23,12 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: 22
-
+          cache: npm
-      # Cache the resolved node_modules (452 MB / 460 packages) keyed on the
+          cache-dependency-path: nextjs-app/package-lock.json
-      # lockfile. On a hit — the common case, since deps change rarely — the
-      # whole `npm ci` step is skipped, not just its download phase. The key
-      # pins OS + node major so we never restore incompatible native binaries.
-      - name: Cache node_modules
-        id: node-modules-cache
-        uses: actions/cache@v4
-        with:
-          path: nextjs-app/node_modules
-          key: nextjs-node-modules-${{ runner.os }}-node22-${{ hashFiles('nextjs-app/package-lock.json') }}
 
       - name: Install dependencies
-        if: steps.node-modules-cache.outputs.cache-hit != 'true'
         working-directory: nextjs-app
-        run: npm ci --prefer-offline --no-audit --no-fund
+        run: npm ci
 
       - name: Typecheck
         working-directory: nextjs-app

backend/app.py

@@ -30,7 +30,6 @@ from .data_loader import (
     load_latest_school_data,
     geocode_single_postcode,
     get_supplementary_data,
-    get_supplementary_data_batch,
     search_schools_typesense,
 )
 from .data_loader import get_data_info as get_db_info
@@ -680,10 +679,8 @@ async def compare_schools(
     db = None
     try:
         db = database.SessionLocal()
-        # One query per table for all schools, not ~5 queries per school.
-        batch = get_supplementary_data_batch(db, urn_list)
         for urn in urn_list:
-            supp = batch.get(urn, {})
+            supp = get_supplementary_data(db, urn)
             supplementary_by_urn[urn] = {
                 key: supp.get(key, default)
                 for key, default in _EMPTY_SUPPLEMENTARY.items()

backend/data_loader.py

@@ -662,150 +662,92 @@ def _admissions_row_dict(a) -> dict:
     }
 
 
-def _census_dict(pc) -> dict:
+def get_supplementary_data(db: Session, urn: int) -> dict:
-    return {
+    """Fetch all supplementary data for a single school URN."""
-        "year": pc.year,
+    result = {}
-        "total_pupils": pc.total_pupils,
-        "female_pupils": pc.female_pupils,
-        "male_pupils": pc.male_pupils,
-        "fsm_pct": pc.fsm_pct,
-        "eal_pct": pc.eal_pct,
-    }
 
-
+    def safe_query(model, pk_field, latest_field=None):
-def _deprivation_dict(d) -> dict:
-    return {
-        "lsoa_code": d.lsoa_code,
-        "idaci_score": d.idaci_score,
-        "idaci_decile": d.idaci_decile,
-    }
-
-
-def _finance_dict(f) -> dict:
-    return {
-        "year": f.year,
-        "per_pupil_spend": f.per_pupil_spend,
-        "staff_cost_pct": f.staff_cost_pct,
-        "teacher_cost_pct": f.teacher_cost_pct,
-        "support_staff_cost_pct": f.support_staff_cost_pct,
-        "premises_cost_pct": f.premises_cost_pct,
-    }
-
-
-def _empty_supplementary() -> dict:
-    return {
-        "ofsted": None,
-        "census": None,
-        "admissions": None,
-        "admissions_history": [],
-        "sen_detail": None,
-        "phonics": None,
-        "deprivation": None,
-        "finance": None,
-    }
-
-
-def get_supplementary_data_batch(db: Session, urns: list[int]) -> dict:
-    """Fetch supplementary data for many URNs with one query per table
-    (WHERE urn IN (...)) instead of ~5 queries per school, collapsing the
-    per-request round-trips from 5*N to a constant 5. Returns {urn: block}
-    with the same shape get_supplementary_data produces per URN.
-
-    Each table is queried independently and failures degrade that table to
-    empty for every URN — a missing mart never blanks the others.
-    """
-    urns = [int(u) for u in urns]
-    result = {urn: _empty_supplementary() for urn in urns}
-    if not urns:
-        return result
-
-    def _safe(fn):
         try:
-            fn()
+            q = db.query(model).filter(getattr(model, pk_field) == urn)
+            if latest_field:
+                q = q.order_by(getattr(model, latest_field).desc())
+            return q.first()
         except Exception as e:
             import logging
-            logging.getLogger(__name__).error("batch supplementary query failed: %s", e)
+            logging.getLogger(__name__).error("safe_query failed for %s: %s", model.__name__, e)
             db.rollback()
+            return None
 
-    # Ofsted — latest inspection per URN. Ordered so the first row seen per
+    # Latest Ofsted inspection
-    # URN is the most recent.
+    o = safe_query(FactOfstedInspection, "urn", "inspection_date")
-    def _ofsted():
+    result["ofsted"] = _ofsted_block(o, urn) if o else None
-        rows = (
-            db.query(FactOfstedInspection)
-            .filter(FactOfstedInspection.urn.in_(urns))
-            .order_by(FactOfstedInspection.urn, FactOfstedInspection.inspection_date.desc())
-            .all()
-        )
-        seen = set()
-        for o in rows:
-            if o.urn in seen:
-                continue
-            seen.add(o.urn)
-            result[o.urn]["ofsted"] = _ofsted_block(o, o.urn)
-    _safe(_ofsted)
 
-    # Census — latest year per URN.
+    # Census (latest year of fact_pupil_characteristics)
-    def _census():
+    pc = safe_query(FactPupilCharacteristics, "urn", "year")
-        rows = (
+    result["census"] = (
-            db.query(FactPupilCharacteristics)
+        {
-            .filter(FactPupilCharacteristics.urn.in_(urns))
+            "year": pc.year,
-            .order_by(FactPupilCharacteristics.urn, FactPupilCharacteristics.year.desc())
+            "total_pupils": pc.total_pupils,
-            .all()
+            "female_pupils": pc.female_pupils,
-        )
+            "male_pupils": pc.male_pupils,
-        seen = set()
+            "fsm_pct": pc.fsm_pct,
-        for pc in rows:
+            "eal_pct": pc.eal_pct,
-            if pc.urn in seen:
+        }
-                continue
+        if pc
-            seen.add(pc.urn)
+        else None
-            result[pc.urn]["census"] = _census_dict(pc)
+    )
-    _safe(_census)
 
-    # Admissions — all years per URN, oldest first (multi-year trend view).
+    # Admissions — all years, oldest first (for the multi-year trend view).
-    def _admissions():
+    try:
-        rows = (
+        admissions_rows = (
             db.query(FactAdmissions)
-            .filter(FactAdmissions.urn.in_(urns))
+            .filter(FactAdmissions.urn == urn)
-            .order_by(FactAdmissions.urn, FactAdmissions.year.asc())
+            .order_by(FactAdmissions.year.asc())
             .all()
         )
-        history: dict = {urn: [] for urn in urns}
+    except Exception as e:
-        for a in rows:
+        import logging
-            history[a.urn].append(_admissions_row_dict(a))
+        logging.getLogger(__name__).error("admissions history query failed: %s", e)
-        for urn, rows_for_urn in history.items():
+        db.rollback()
-            result[urn]["admissions_history"] = rows_for_urn
+        admissions_rows = []
-            result[urn]["admissions"] = rows_for_urn[-1] if rows_for_urn else None
-    _safe(_admissions)
 
-    # Deprivation — one row per URN.
+    history = [_admissions_row_dict(a) for a in admissions_rows]
-    def _deprivation():
+    result["admissions_history"] = history
-        rows = (
+    # Keep the single latest-year object for backwards-compatible consumers
-            db.query(FactDeprivation)
+    # (hero chips, etc.).
-            .filter(FactDeprivation.urn.in_(urns))
+    result["admissions"] = history[-1] if history else None
-            .all()
-        )
-        for d in rows:
-            result[d.urn]["deprivation"] = _deprivation_dict(d)
-    _safe(_deprivation)
 
-    # Finance — latest year per URN.
+    # SEN detail — not available in current marts
-    def _finance():
+    result["sen_detail"] = None
-        rows = (
+
-            db.query(FactFinance)
+    # Phonics — no school-level data on EES
-            .filter(FactFinance.urn.in_(urns))
+    result["phonics"] = None
-            .order_by(FactFinance.urn, FactFinance.year.desc())
+
-            .all()
+    # Deprivation
-        )
+    d = safe_query(FactDeprivation, "urn")
-        seen = set()
+    result["deprivation"] = (
-        for f in rows:
+        {
-            if f.urn in seen:
+            "lsoa_code": d.lsoa_code,
-                continue
+            "idaci_score": d.idaci_score,
-            seen.add(f.urn)
+            "idaci_decile": d.idaci_decile,
-            result[f.urn]["finance"] = _finance_dict(f)
+        }
-    _safe(_finance)
+        if d
+        else None
+    )
+
+    # Finance (latest year)
+    f = safe_query(FactFinance, "urn", "year")
+    result["finance"] = (
+        {
+            "year": f.year,
+            "per_pupil_spend": f.per_pupil_spend,
+            "staff_cost_pct": f.staff_cost_pct,
+            "teacher_cost_pct": f.teacher_cost_pct,
+            "support_staff_cost_pct": f.support_staff_cost_pct,
+            "premises_cost_pct": f.premises_cost_pct,
+        }
+        if f
+        else None
+    )
 
     return result
-
-
-def get_supplementary_data(db: Session, urn: int) -> dict:
-    """Supplementary data for a single URN (thin wrapper over the batch)."""
-    return get_supplementary_data_batch(db, [urn])[int(urn)]

backend/tests/test_compare_enrichment.py

@@ -67,9 +67,7 @@ def client(monkeypatch):
 
     monkeypatch.setattr(app_module, "load_school_data", _two_primary_schools_df)
     monkeypatch.setattr(
-        app_module,
+        app_module, "get_supplementary_data", lambda db, urn: dict(CANNED_SUPPLEMENTARY)
-        "get_supplementary_data_batch",
-        lambda db, urns: {int(u): dict(CANNED_SUPPLEMENTARY) for u in urns},
     )
     monkeypatch.setattr(database_module, "SessionLocal", _StubSession)
     return TestClient(app_module.app, raise_server_exceptions=False)
@@ -104,10 +102,10 @@ def test_top_level_national_averages_and_benchmarks(client):
 def test_supplementary_failure_degrades_not_500(client, monkeypatch):
     from backend import app as app_module
 
-    def _boom(db, urns):
+    def _boom(db, urn):
         raise RuntimeError("marts unavailable")
 
-    monkeypatch.setattr(app_module, "get_supplementary_data_batch", _boom)
+    monkeypatch.setattr(app_module, "get_supplementary_data", _boom)
     resp = client.get("/api/compare?urns=100140")
     assert resp.status_code == 200
     school = resp.json()["comparison"]["100140"]

backend/tests/test_supplementary_batch.py

@@ -1,111 +0,0 @@
-"""get_supplementary_data_batch fetches one query per table for all URNs
-(not ~5 per school) and returns the same per-URN block shape as the
-single-URN function, picking the latest row per URN where relevant."""
-
-import types
-
-from backend import data_loader
-from backend.data_loader import get_supplementary_data_batch
-
-
-class _FakeQuery:
-    """Records that a query ran and serves canned rows filtered by an in-list."""
-
-    def __init__(self, recorder, model_name, rows):
-        self._rec = recorder
-        self._model = model_name
-        self._rows = rows
-
-    def filter(self, *args, **kwargs):
-        return self
-
-    def order_by(self, *args, **kwargs):
-        return self
-
-    def all(self):
-        self._rec.append(self._model)
-        return self._rows
-
-    def first(self):
-        self._rec.append(self._model)
-        return self._rows[0] if self._rows else None
-
-
-class _FakeSession:
-    def __init__(self, rows_by_model):
-        self.rows_by_model = rows_by_model
-        self.queries: list[str] = []
-
-    def query(self, model):
-        name = model.__name__
-        return _FakeQuery(self.queries, name, self.rows_by_model.get(name, []))
-
-    def rollback(self):
-        pass
-
-
-def _ofsted_row(urn, date, oe):
-    base = {f: None for f in (
-        "framework", "inspection_type", "quality_of_education", "behaviour_attitudes",
-        "personal_development", "leadership_management", "early_years_provision",
-        "sixth_form_provision", "ungraded_outcome", "ungraded_grade",
-        "rc_safeguarding_met", "rc_inclusion", "rc_curriculum_teaching", "rc_achievement",
-        "rc_attendance_behaviour", "rc_personal_development", "rc_leadership_governance",
-        "rc_early_years", "rc_sixth_form", "report_url",
-    )}
-    base.update(urn=urn, inspection_date=types.SimpleNamespace(isoformat=lambda: date),
-                overall_effectiveness=oe, grade_source=None)
-    return types.SimpleNamespace(**base)
-
-
-def _adm_row(urn, year):
-    return types.SimpleNamespace(
-        urn=urn, year=year, school_phase="Primary", places_offered=100,
-        total_applications=200, first_preference_applications=150,
-        first_preference_offers=140, first_preference_offer_pct=93.3,
-        oversubscription_ratio=1.5, oversubscribed=True,
-        total_offers=100, second_preference_offers=5, third_preference_offers=2,
-        cross_la_applications=10, cross_la_offers=3,
-    )
-
-
-def test_one_query_per_table_and_latest_row_per_urn():
-    rows = {
-        # URN 1 has two Ofsted rows; the batch must keep the most recent (2023).
-        "FactOfstedInspection": [
-            _ofsted_row(1, "2023-01-01", 2),
-            _ofsted_row(1, "2019-01-01", 3),
-            _ofsted_row(2, "2021-06-01", 1),
-        ],
-        "FactAdmissions": [_adm_row(1, 202526), _adm_row(1, 202627), _adm_row(2, 202627)],
-        "FactPupilCharacteristics": [],
-        "FactDeprivation": [],
-        "FactFinance": [],
-    }
-    session = _FakeSession(rows)
-    out = get_supplementary_data_batch(session, [1, 2])
-
-    # Exactly one query per table — five total, regardless of two URNs.
-    assert sorted(session.queries) == [
-        "FactAdmissions", "FactDeprivation", "FactFinance",
-        "FactOfstedInspection", "FactPupilCharacteristics",
-    ]
-
-    # Latest Ofsted kept per URN
-    assert out[1]["ofsted"]["overall_effectiveness"] == 2
-    assert out[2]["ofsted"]["overall_effectiveness"] == 1
-
-    # Admissions history grouped per URN, latest exposed as `admissions`
-    assert [r["year"] for r in out[1]["admissions_history"]] == [202526, 202627]
-    assert out[1]["admissions"]["year"] == 202627
-    assert out[2]["admissions_history"] == [{**out[2]["admissions_history"][0]}]
-
-    # Empty tables degrade to the null block, not a crash
-    assert out[1]["census"] is None and out[1]["deprivation"] is None
-
-
-def test_single_wrapper_matches_batch(monkeypatch):
-    session = _FakeSession({"FactOfstedInspection": [_ofsted_row(5, "2022-01-01", 2)]})
-    single = data_loader.get_supplementary_data(session, 5)
-    assert single["ofsted"]["overall_effectiveness"] == 2
-    assert single["admissions_history"] == []

e2e/tests/journeys.spec.ts

@@ -213,7 +213,12 @@ test('compare chart on mobile shows school chips with tap-to-focus', async ({ pa
   expect(bodyOverflowsX).toBe(false);
 
   // The trends chart still renders (inside the Explore trends section)…
-  await expect(page.locator('canvas:visible').first()).toBeVisible({ timeout: 15_000 });
+  const chartCanvas = page.locator('canvas:visible').first();
+  await expect(chartCanvas).toBeVisible({ timeout: 15_000 });
+  // …at a real height, not the squashed ~150px Chart.js fallback that
+  // appears when the container lacks a definite height.
+  const chartBox = await chartCanvas.boundingBox();
+  expect(chartBox && chartBox.height).toBeGreaterThan(220);
 
   // …with the mobile chart legend chips and tap-to-focus behaviour intact.
   const chipGroup = page.getByRole('group', { name: /highlight a school/i });

nextjs-app/components/compare/TrendsExplorer.module.css

@@ -60,8 +60,20 @@
   margin: 0 0 1rem;
 }
 
+/* ComparisonChart runs Chart.js with maintainAspectRatio:false, so it fills
+   its container's height — which must be *definite*. A min-height alone does
+   not resolve the chart wrapper's height:100%, leaving Chart.js to fall back
+   to its ~150px default (a squashed sliver). Give it a real height. */
 .chartBox {
-  min-height: 320px;
+  height: 420px;
+}
+
+@media (max-width: 640px) {
+  /* Taller on mobile: the mobile-only school chips sit above the canvas and
+     wrap to two rows for 3+ schools, so the plot keeps a usable height. */
+  .chartBox {
+    height: 360px;
+  }
 }
 
 .tableWrapper {