fixed BUG-11, parent was both an array (in Book) and not an array in QuickBook, so made them arrays to keep with ORM-way

main.py

@@ -31,6 +31,13 @@ from loan import Loan, LoanForm, LoanSchema
 from series import Series, SeriesForm, SeriesSchema, ListOfSeriesWithMissingBooks
 
 ####################################### CLASSES / DB model #######################################
+class QuickParentBook:
+    parent=[]
+
+    def __repr__(self):
+        return "<parent: {}, publisher: {}, owned: {}, covertype: {}, condition: {}, blurb: {}>".format(self.parent, self.publisher, self.owned, self.covertype, self.condition, self.blurb )
+
+
 book_author_link = db.Table('book_author_link', db.Model.metadata,
     db.Column('book_id', db.Integer, db.ForeignKey('book.id')),
     db.Column('author_id', db.Integer, db.ForeignKey('author.id'))
@@ -178,7 +185,7 @@ class BookForm(FlaskForm):
     submit = SubmitField('Save' )
     delete = SubmitField('Delete' )
     add_sub = SubmitField('Add Sub-Book' )
-
+    rem_sub = SubmitField('Remove Sub-Book from Parent' )
 
 ################################# helper functions ###################################
 def GetBookIdFromSeriesByBookNum( series_id, book_num ):
@@ -339,12 +346,13 @@ def subbooks_for_book(id):
 
     return render_template("subbooks_for_book.html", sub_books=sub_book, s2=subs )
 
-class QuickParentBook:
-    parent=[]
-
-    def __repr__(self):
-        return "<parent: {}, publisher: {}, owned: {}, covertype: {}, condition: {}, blurb: {}>".format(self.parent, self.publisher, self.owned, self.covertype, self.condition, self.blurb )
-
+################################################################################
+# /remove_sub_book -> POST -> removes this subbook from parent
+# /books (or /book/<parent_id> -- if you added a sub-book of parent_id
+################################################################################
+@app.route("/remove_subbook", methods=["POST"])
+def remove_sub_book():
+    return redirect( '/book/{}'.format(request.form['rem_sub_parent_id']) )
 
 ################################################################################
 # /book -> GET/POST -> creates a new book and when created, takes you back to
@@ -369,7 +377,7 @@ def new_book():
             parent=request.form['add_sub_parent_id']
             book = Book.query.get(parent)
             bb=QuickParentBook()
-            bb.parent= { 'id': parent, 'title': book.title }
+            bb.parent.append( { 'id': parent, 'title': book.title } )
             form.publisher.default = book.publisher
             form.owned.default = book.owned
             form.condition.default = book.condition
@@ -499,6 +507,7 @@ def book(id):
     genre_list = GetGenres()
 
     book_s = book_schema.dump(book)
+    print( book.parent )
     return render_template("book.html", b=book, books=book_s, book_form=book_form, author_list=author_list, genre_list=genre_list, page_title=page_title, alert=st.GetAlert(), message=st.GetMessage(), poss_series_list=ListOfSeriesWithMissingBooks() )
 
 def GetCount( what, where ):