decided to use thing/-1 to create a new thing. Tried it on owned first, works so now also can delete owned/<id> as well. Also made sure not to show the delete button when we are only creating a thing

owned.py

@@ -2,13 +2,14 @@ from wtforms import SubmitField, StringField, HiddenField, SelectField, validato
 from flask import request, render_template
 from flask_wtf import FlaskForm
 from __main__ import db, app, ma
+from sqlalchemy import func
 
 ################################################################################
 # Class describing Owned in the database, and via sqlalchemy, connected to the DB as well
 ################################################################################
 class Owned(db.Model):
-    id = db.Column(db.Integer, unique=True, nullable=False, primary_key=True)
-    name = db.Column(db.String(50), unique=False, nullable=False)
+    id = db.Column(db.Integer, primary_key=True )
+    name = db.Column(db.String(50), unique=True, nullable=False)
 
     def __repr__(self):
         return "<id: {}, name: {}>".format(self.id,self.name)
@@ -45,21 +46,36 @@ def owneds():
 ################################################################################
 @app.route("/owned/<id>", methods=["GET", "POST"])
 def owned(id):
-    ### DDP: should this be request.form or request.values?
-    alert="Success"
+    alert="success"
     owned_form = OwnedForm(request.form)
-    if request.method == 'POST' and owned_form.validate():
-        id = request.form['id']
-        owned = Owned.query.get(id)
-        try:
-            request.form['submit']
-        except:
-            message="Sorry, Deleting unsupported at present"
-            alert="Danger"
+    if id == "-1":
+        if 'name' not in request.form:
+            owned=None
+            message=""
+            return render_template("edit_id_name.html", owned=owned, alert=alert, message=message, form=owned_form, page_title='Create new Owned Type' )
         else:
-            owned.name = request.form['name']
+            res=db.session.query(func.max(Owned.id)).all()
+            new_id=res[0][0]
+            new_id=new_id+1
+            owned = Owned( id=new_id, name=request.form["name"] )
+            db.session.add(owned)
             db.session.commit()
+            message="Created new Owned Type (id={})".format(new_id)
+            owneds = Owned.query.order_by('id').all()
+            return render_template("show_id_name.html", objects=owneds, page_title='Show All Ownership types', url_base='owned', alert=alert, message=message)
+
+    ### DDP: should this be request.form or request.values?
+    if request.method == 'POST' and owned_form.validate():
+        owned = Owned.query.get(id)
+        if 'delete' in request.form:
+            message="Successfully deleted (id={}, name={})".format( owned.id, owned.name )
+            owned = Owned.query.filter(Owned.id==id).delete()
+        if 'submit' in request.form:
+            owned.name = request.form['name']
             message="Successfully Updated Owned (id={})".format(id)
+        db.session.commit()
+        owneds = Owned.query.order_by('id').all()
+        return render_template("show_id_name.html", objects=owneds, page_title='Show All Ownership types', url_base='owned', alert=alert, message=message)
     else:
         owned = Owned.query.get(id)
         owned_form = OwnedForm(request.values, obj=owned)

templates/base.html

@@ -58,7 +58,7 @@
 						<a class="dropdown-item" href="{{url_for('conditions')}}">Show Conditions</a>
 						<a class="dropdown-item" href="{{url_for('covertypes')}}">Create new Covertype</a>
 						<a class="dropdown-item" href="{{url_for('covertypes')}}">Show Covertypes</a>
-						<a class="dropdown-item" href="{{url_for('owneds')}}">Create new Owned Type</a>
+						<a class="dropdown-item" href="{{url_for('owned', id=-1)}}">Create new Owned Type</a>
 						<a class="dropdown-item" href="{{url_for('owneds')}}">Show Ownership Types</a>
 						<a class="dropdown-item" href="{{url_for('ratings')}}">Create new Rating</a>
 						<a class="dropdown-item" href="{{url_for('ratings')}}">Show Ratings</a>

templates/edit_id_name.html

@@ -18,7 +18,11 @@
 					<br>
 					</div class="row">
 					<div class="form-row col-lg-12">
+						{% if 'Create' in page_title %}
+							{{ form.delete( class="btn btn-outline-danger col-lg-2", style="visibility:hidden" )}}
+						{% else %}
 							{{ form.delete( class="btn btn-outline-danger col-lg-2" )}}
+						{% endif %}
 						{{ form.submit( class="btn btn-primary col-lg-2" )}}
 					</div class="form-row">
 				</form>

templates/show_id_name.html

@@ -2,6 +2,11 @@
 
 {% block main_content %}
 <h3>{{page_title}}</h3>
+{% if message|length %}
+	<div class="row alert alert-{{alert}}">
+	{{message}}
+	</div>
+{% endif %}
 <table id="book_table" class="table table-striped table-sm" data-toolbar="#toolbar" data-search="true">
 	<thead>
 		<tr class="thead-light"><th>Name</th></tr>