moved functions and resolved bug

web/app/practice.py

 @practice.route('/practices/<int:practice_id>')
 def show_practice(practice_id):
     practice = get_full_resource(practice_id)
+    practice.references = replace_urls(practice.references)
     return render_template('resource.html', resource=practice)
 
 # route for editing a single practice based on the ID in the database

web/app/relationships.py

                 links.extend(Resource.query.filter_by(id=primary_id).all())
             return links
 
+# function to append relationships to a resource object
+def append_relationships(resource):
+    relationships = get_relationships(resource.id)
+    if relationships:
+        for relationship in relationships:
+            if relationship.type == 'tool':
+                if 'tools' not in resource.__dict__.keys():
+                    resource.__dict__['tools'] = relationship
+                elif type(resource.__dict__['tools']) == list:
+                    resource.__dict__['tools'].append(relationship)
+                else:
+                    resource.__dict__['tools'] = [resource.__dict__['tools'], relationship]
+            elif relationship.type == 'practice':
+                if 'practices' not in resource.__dict__.keys():
+                    resource.__dict__['practices'] = relationship
+                elif type(resource.__dict__['practices']) == list:
+                    resource.__dict__['practices'].append(relationship)
+                else:
+                    resource.__dict__['practices'] = [resource.__dict__['practices'], relationship]
+            elif relationship.type == 'book':
+                if 'books' not in resource.__dict__.keys():
+                    resource.__dict__['books'] = relationship
+                elif type(resource.__dict__['books']) == list:
+                    resource.__dict__['books'].append(relationship)
+                else:
+                    resource.__dict__['books'] = [resource.__dict__['books'], relationship]
+        return resource
+    else:
+        return resource
+
 # function to add a relationship to a linked resource
 def add_relationship(resource_id, linked_resource_id):
     first_resource_id = resource_id

web/app/resources.py

 # function to retrieve data about a resource and its relationships
 def get_full_resource(resource_id):
     resource = get_resource(resource_id)
-    relationships = get_relationships(resource_id)
-    for relationship in relationships:
-        if relationship.type == 'tool':
-            if 'tools' not in resource.__dict__.keys():
-                resource.__dict__['tools'] = relationship
-            elif type(resource.__dict__['tools']) == list:
-                resource.__dict__['tools'].append(relationship)
-            else:
-                resource.__dict__['tools'] = [resource.__dict__['tools'], relationship]
-        elif relationship.type == 'practice':
-            if 'practices' not in resource.__dict__.keys():
-                resource.__dict__['practices'] = relationship
-            elif type(resource.__dict__['practices']) == list:
-                resource.__dict__['practices'].append(relationship)
-            else:
-                resource.__dict__['practices'] = [resource.__dict__['practices'], relationship]
-        elif relationship.type == 'book':
-            if 'books' not in resource.__dict__.keys():
-                resource.__dict__['books'] = relationship
-            elif type(resource.__dict__['books']) == list:
-                resource.__dict__['books'].append(relationship)
-            else:
-                resource.__dict__['books'] = [resource.__dict__['books'], relationship]
+    resource = append_relationships(resource)
     if resource.type == 'book':
         book_data = get_book_data(resource.isbn)
-        resource.__dict__.update(book_data)
+        if book_data:
+            resource.__dict__.update(book_data)
     return resource
 
 # function to delete a single resource