have some record in the table referenced this record of *B***** 2016-11-28 8:12 GMT-02:00 Áureo Dias Neto <[email protected]>:
> > Good Morning, With this line of code, do I get the records of the tables > referenced in table A? My question is as follows, I have two tables, A and > B, I want to check which records in table A, have some record in the table > referenced this record of A hug > > 2016-11-26 11:33 GMT-02:00 Anthony <[email protected]>: > >> Not sure I understand exactly, but if you want to know whether tableA is >> referenced by any other tables, you can do something like: >> >> tableA_referenced_by = set(field._table for field in db.tableA. >> _referenced_by) >> >> That will give you a set of any tables (the actual DAL Table objects) >> that have fields referencing tableA (note, I used set() in order to >> de-duplicate in case a given table has more than one field referencing >> tableA). >> >> Anthony >> >> >> On Friday, November 25, 2016 at 11:11:41 PM UTC-5, Áureo Dias Neto wrote: >>> >>> Hello guys, >>> >>> I'm making a search form, and i need to verify, if, a table is >>> referenced in another table, that's two have a relationship one-to-many. >>> >>> My asking is, i'm make it with a for loop, and it's return a maximum >>> recursion of python objet.. >>> >>> How to dow, a search, in all the table, to check, if this table have any >>> register on another table, that's refere to this first table? >>> >> -- >> Resources: >> - http://web2py.com >> - http://web2py.com/book (Documentation) >> - http://github.com/web2py/web2py (Source code) >> - https://code.google.com/p/web2py/issues/list (Report Issues) >> --- >> You received this message because you are subscribed to the Google Groups >> "web2py-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> For more options, visit https://groups.google.com/d/optout. >> > > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
