Databases
StackOverflow2013
Postsdbo
POUpdate SQLAlchemy relationship
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POUpdate SQLAlchemy relationship
    primarykey
    data
    text
    <p>I have two relationships to the same table. When I add an element to one relationship, this does not reflect to the other relationship until I submit the session. Is there a way to force "update" the relationships?</p> <p><strong>Concrete example:</strong></p> <pre><code>class Event(ManagerBase): """Defines an event.""" __tablename__ = 'eventing_events' id = Column(Integer, primary_key=True) device_id = Column(Integer, ForeignKey(EventingDevice.id), nullable=False) device = relation(EventingDevice) type_id = Column(Integer, ForeignKey(EventType.id), nullable=False) type = relation(EventType) datetime = Column(DateTime, nullable=False) summary = Column(String(500)) fields = relation("EventFieldValue", viewonly=True, collection_class=attribute_mapped_collection("field.name")) class EventFieldValue(ManagerBase): """The value of a single field of an event.""" __tablename__ = 'eventing_event_field_values' event_id = Column(Integer, ForeignKey(Event.id), primary_key=True) event = relation(Event, backref=backref("field_values", collection_class=attribute_mapped_collection("field"))) field_id = Column(Integer, ForeignKey(Field.id), primary_key=True) field = relation(Field) value = Column(Text) </code></pre> <p>I have two realations from <code>Event</code> to <code>EventFieldValue</code>: <code>fields</code> and <code>field_values</code> (via backref of event). When I add a EventFieldValue to <code>event.field_values</code>, it does not reflect in <code>event.fields</code> until I commit the session.</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USManuel Faux
    1. USManuel Faux
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POUpdate SQLAlchemy relationship
      1. This table or related slice is empty.
      1. VTUpMod
    1. COHave you tried to `flush()` your session?
      singulars
      1. POUpdate SQLAlchemy relationship
      1. USSpencer Rathbun
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload