Slim dict for faster loading

app/models.py

@@ -90,6 +90,20 @@ class Tune(db.Model):
             "references":  [r.to_dict() for r in self.references],
         }
 
+    def to_slim_dict(self):
+        return {
+            "id":              self.id,
+            "name":            self.name,
+            "key":             self.key,
+            "modal":           self.modal,
+            "source_id":       self.source_id,
+            "created_at":      self.created_at.isoformat() if self.created_at else None,
+            "source":          self.source.to_dict() if self.source else None,
+            "instruments":     [i.to_slim_dict() for i in self.instruments],
+            "reference_count": len(self.references),
+            "has_notes":       bool(self.notes) or any(bool(e.notes) for e in self.instruments),
+        }
+
 
 class TuneByInstrument(db.Model):
     __tablename__ = "tune_by_instrument"
@@ -126,6 +140,21 @@ class TuneByInstrument(db.Model):
             "notes":           [n.to_dict() for n in self.notes],
         }
 
+    def to_slim_dict(self):
+        return {
+            "id":              self.id,
+            "tune_id":         self.tune_id,
+            "instrument_id":   self.instrument_id,
+            "instrument_name": self.instrument.name if self.instrument else None,
+            "learned_from_id": self.learned_from_id,
+            "learned_from":    self.learned_from_musician.name if self.learned_from_musician else None,
+            "date_learned":    self.date_learned.isoformat() if self.date_learned else None,
+            "tuning_id":       self.tuning_id,
+            "tuning":          self.tuning.name if self.tuning else None,
+            "status":          self.status,
+            "difficulty":      self.difficulty,
+        }
+
 
 class TuneNote(db.Model):
     __tablename__ = "tune_notes"

app/routes_tunes.py

@@ -58,7 +58,7 @@ def list_tunes():
             q = q.filter(TuneByInstrument.difficulty.ilike(difficulty))
 
     tunes = q.order_by(Tune.name).all()
-    return jsonify([t.to_dict() for t in tunes])
+    return jsonify([t.to_slim_dict() for t in tunes])
 
 
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