Good afternoon Mike

I am so grateful for your guidance, time and help. I got it working, I am
so glad.

Kind regards

On Tue, Aug 16, 2022 at 3:22 PM Mike Bayer <[email protected]> wrote:

> There is no automatic or implied coordination against the survey_answer
> table as indicated in the "secondary" field.   You need to not add entries
> to Survey.answers, Survey.questions as is, those would be viewonly=True as
> long as they refer to survey_answer as "secondary".    Instead, create new
> SurveyAnswer instances.     To facilitate this, add relationships to
> Survey, Answer, Question and SurveyAnswer that link SurveyAnswer directly
> to these classes.
>
> this pattern is known as the "association object" pattern and is
> illustrated at
> https://docs.sqlalchemy.org/en/14/orm/basic_relationships.html#association-object
> .  It is used as a replacement for the "many to many" pattern when the
> "many to many" table has more columns than just a simple linkage between
> two rows.
>
> On Tue, Aug 16, 2022, at 9:06 AM, Adderus Berg wrote:
>
> Good afternoon community
>
> I have the following tables:
>
>    - Survey
>    - Answer
>    - Question
>    - SurveyAnswer (Association table)
>
> My association table has 3 foreign keys that relates to Answer, Question
> and Survey.
> A Survey has many Questions, many Answers.
>
> When I insert a survey object into the db, SqlAlchemy creates two seperate
> entries for both questions and answers relating to the Survey instead of
> adding them in the same data set.
> I would appreciate any guidance regarding this issue. Thank you in
> advance.
> Here is a screenshot of my db models:
> [image: many to many.png]
> Here is an example of what happens after inserting a Survey objet to the
> db:
> [image: SurveyAnswerInsertion.png]
> As you can see it seems to me that it inserts the first dataset for
> answers then afterwards inserts the questions' dataset. I would like to
> have these integrated into the same rows.
> I am not sure if I am doing something wrong.
>
> Once again thank you for your help
>
>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
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>
>
>
> --
> SQLAlchemy -
> The Python SQL Toolkit and Object Relational Mapper
>
> http://www.sqlalchemy.org/
>
> To post example code, please provide an MCVE: Minimal, Complete, and
> Verifiable Example. See http://stackoverflow.com/help/mcve for a full
> description.
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>


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SQLAlchemy - 
The Python SQL Toolkit and Object Relational Mapper

http://www.sqlalchemy.org/

To post example code, please provide an MCVE: Minimal, Complete, and Verifiable 
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