started work on view "read" (detailed view of single Werk)

the_works/templates/views/werk_read.html

@@ -0,0 +1,51 @@
+{% extends 'base.html' %}
+
+{% block title %}"{{ werk["Titel"] }}" – Detailansicht"{% endblock title %}
+
+{% block heading %}"{{ werk["Titel"] }}" – Detailansicht{% endblock heading %}
+
+{% block content %}
+{% set ID = werk["id"] %}
+<article>
+  <form method="post" action="{{ url_for('werk.update', id=ID) }}" readonly>
+    <fieldset disabled="disabled">
+      <label>
+        Titel (erforderlich)
+        <input id="form_Titel" name="form_Titel" aria-label="Titel" placeholder="Titel" value="{{ werk['Titel'] }}" required />
+      </label>
+      <label>
+        Untertitel
+        <input id="form_Untertitel" name="form_Untertitel" aria-label="Untertitel" placeholder="Untertitel" value="{{ werk['Untertitel'] }}" />
+      </label>
+      <label>
+        Verlag
+        <select id="form_Verlag" name="form_Verlag" aria-label="Verlag">
+          <option value=""{% if werk['v_id'] == '' %} selected{% endif %}>kein Verlag</option>
+          {% for v in verlage %}<option value="{{ v.ID }}"{% if werk['v_id'] == v.ID %} selected{% endif %}>{{ v.Verlag }}</option>
+          {% endfor %}
+        </select>
+      </label>
+      <label>
+        Werksform
+        <select id="form_Werksform" name="form_Werksform" aria-label="Werksform">
+          <option value=""{% if werk['wf_id'] == '' %} selected{% endif %}>keine Werksform</option>
+          {% for wf in werksformen %}<option value="{{ wf.ID }}"{% if werk['wf_id'] == wf.ID %} selected{% endif %}>{{ wf.Werksform }}</option>
+          {% endfor %}
+        </select>
+      </label>
+      <label>
+        Reihe
+        <select id="form_Reihe" name="form_Reihe" aria-label="Der Text gehört zur Reihe …">
+          <option value="" {% if werk['r_id'] == "" %}selected{% endif %}>keine Reihe</option>
+          {% for r in reihen %}<option value="{{ r.ID }}" {% if werk['r_id'] == r.ID %}selected{% endif %}>{{ r.Titel }}</option>
+          {% endfor %}
+        </select>
+      </label>
+      <label>
+        Reihennummer
+        <input id="form_Reihennummer" name="form_Reihennummer" aria-label="Reihennummer" placeholder="keine Reihennummer" value="{{ werk['Reihennummer'] }}" />
+      </label>
+    </fieldset>
+  </form>
+</article>
+{% endblock content %}

the_works/views/werk.py

@@ -5,19 +5,16 @@ from the_works.models import Werk, Reihe, Verlag, Werksform
 
 bp = Blueprint("werk", __name__)
 
+# ORM equivalent of SQL statement to select all Werk entries
+read_statement = select(Werk, Reihe, Verlag, Werksform).join(Werk.reihe, isouter=True).join(Werk.verlag, isouter=True).join(Werk.werksform, isouter=True)
+
+
 @bp.route("/werk")
 @bp.route("/werk/all")
 def all():
-  # build ORM equivalent of SELECT statement
-  stmt = (
-    select(Werk, Reihe, Verlag, Werksform)
-    .join(Werk.reihe, isouter=True)
-    .join(Werk.verlag, isouter=True)
-    .join(Werk.werksform, isouter=True)
-  )
   # condense result into list of dicts
   werke = []
-  for row in db.session.execute(stmt):  
+  for row in db.session.execute(read_statement):  
     werke.append({ 
       "id": row.Werk.ID,
       "Titel": row.Werk.Titel,
@@ -30,9 +27,21 @@ def all():
 
 
 @bp.route("/werk/read/<int:id>")
-def read():
-  werk = db.session.get(Werk, id)
-  return render_template("views/werk_read.html", werk=werk)
+def read(id):
+  row = db.session.execute(read_statement.where(Werk.ID == id)).one()
+  werk = {
+    "id": row.Werk.ID,
+    "Titel": row.Werk.Titel,
+    "Untertitel": row.Werk.Untertitel or "",
+    "Reihe": row.Reihe.Titel if row.Reihe else "",
+    "r_id": row.Reihe.ID if row.Reihe else "",
+    "Verlag": row.Verlag.Verlag if row.Verlag else "",
+    "v_id": row.Verlag.ID if row.Verlag else "",
+    "Werksform": row.Werksform.Werksform if row.Werksform else "",
+    "wf_id": row.Werksform.ID if row.Werksform else "",
+    "Reihennummer": row.Werk.Reihennummer or "",
+  }
+  return render_template("views/werk_read.html", werk=werk, reihen=db.session.scalars(select(Reihe)), verlage=db.session.scalars(select(Verlag)), werksformen=db.session.scalars(select(Werksform)))
 
 @bp.route("/werk/create", methods=["POST"])
 def create():