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  • Allow .insert(..., foreign_keys=()) to auto-detect table and primary key · 4 ✖

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  • OWNER · 4 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions issue performed_via_github_app
501548676 https://github.com/simonw/sqlite-utils/issues/25#issuecomment-501548676 https://api.github.com/repos/simonw/sqlite-utils/issues/25 MDEyOklzc3VlQ29tbWVudDUwMTU0ODY3Ng== simonw 9599 2019-06-13T04:58:12Z 2019-06-13T04:58:12Z OWNER 
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 Allow .insert(..., foreign_keys=()) to auto-detect table and primary key 449848803  
501548097 https://github.com/simonw/sqlite-utils/issues/25#issuecomment-501548097 https://api.github.com/repos/simonw/sqlite-utils/issues/25 MDEyOklzc3VlQ29tbWVudDUwMTU0ODA5Nw== simonw 9599 2019-06-13T04:54:33Z 2019-06-13T04:54:33Z OWNER

Still need to add this mechanism to .create_table() - this code here is all that needs to be modified - it needs to learn to deal with the alternative syntax for foreign keys and guess the missing data if necessary:

https://github.com/simonw/sqlite-utils/blob/d645032cfa4edbccd0542eecdddca29edf9f7b07/sqlite_utils/db.py#L115-L119

 
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 Allow .insert(..., foreign_keys=()) to auto-detect table and primary key 449848803  
501517535 https://github.com/simonw/sqlite-utils/issues/25#issuecomment-501517535 https://api.github.com/repos/simonw/sqlite-utils/issues/25 MDEyOklzc3VlQ29tbWVudDUwMTUxNzUzNQ== simonw 9599 2019-06-13T01:50:34Z 2019-06-13T01:50:34Z OWNER

If I'm going to do this then I should make the other_table and other_column arguments optional here too:

https://github.com/simonw/sqlite-utils/blob/2fed87da6ea990d295672e4db2c8ae97b787913e/sqlite_utils/cli.py#L201-L215

 
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 Allow .insert(..., foreign_keys=()) to auto-detect table and primary key 449848803  
501516797 https://github.com/simonw/sqlite-utils/issues/25#issuecomment-501516797 https://api.github.com/repos/simonw/sqlite-utils/issues/25 MDEyOklzc3VlQ29tbWVudDUwMTUxNjc5Nw== simonw 9599 2019-06-13T01:46:36Z 2019-06-13T01:47:35Z OWNER

Maybe foreign_keys could even optionally just be a list of columns - it could then attempt to detect the related tables based on some rules-of-thumb and raise an error if there's no obvious candidate.

Rules: * If the column name ends in _id, remove that suffix and look for a matching table. * Try for a table which is the column name without the _id suffix with an s appended to it * Try for a table that's the exact match for the column name

If none of these rules match, raise an error.

So the above example could be further simplified to: python db["usages"].insert_all( usages_to_insert, foreign_keys=["line_id", "definition_id"] )

 
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 Allow .insert(..., foreign_keys=()) to auto-detect table and primary key 449848803  

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