Polymorphic Code-First Models and Querying











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I'm trying to build a survey system and want to use inheritance on the Question model, using code-first migrations.



public class MultipleChoiceQuestion : Question {
public bool AllowMultipleSelection { get; set; }
public List<MCQOption> Options { get; set; }
}


Even if I add another DbSet<MultipleChoiceQuestion>, it doesn't appear in the migrations. What am I doing wrong?










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  • It doesn't add anything that would result in additional columns, so another table isn't needed (presumably the MCQOption has a FK back to Question)
    – juharr
    yesterday










  • @juharr guess I oversimplified my sample code. Fixed it to solve the case you mentioned.
    – Ali Almohsen
    yesterday















up vote
0
down vote

favorite












I'm trying to build a survey system and want to use inheritance on the Question model, using code-first migrations.



public class MultipleChoiceQuestion : Question {
public bool AllowMultipleSelection { get; set; }
public List<MCQOption> Options { get; set; }
}


Even if I add another DbSet<MultipleChoiceQuestion>, it doesn't appear in the migrations. What am I doing wrong?










share|improve this question
























  • It doesn't add anything that would result in additional columns, so another table isn't needed (presumably the MCQOption has a FK back to Question)
    – juharr
    yesterday










  • @juharr guess I oversimplified my sample code. Fixed it to solve the case you mentioned.
    – Ali Almohsen
    yesterday













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm trying to build a survey system and want to use inheritance on the Question model, using code-first migrations.



public class MultipleChoiceQuestion : Question {
public bool AllowMultipleSelection { get; set; }
public List<MCQOption> Options { get; set; }
}


Even if I add another DbSet<MultipleChoiceQuestion>, it doesn't appear in the migrations. What am I doing wrong?










share|improve this question















I'm trying to build a survey system and want to use inheritance on the Question model, using code-first migrations.



public class MultipleChoiceQuestion : Question {
public bool AllowMultipleSelection { get; set; }
public List<MCQOption> Options { get; set; }
}


Even if I add another DbSet<MultipleChoiceQuestion>, it doesn't appear in the migrations. What am I doing wrong?







c# inheritance ef-code-first ef-core-2.1






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edited yesterday

























asked yesterday









Ali Almohsen

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  • It doesn't add anything that would result in additional columns, so another table isn't needed (presumably the MCQOption has a FK back to Question)
    – juharr
    yesterday










  • @juharr guess I oversimplified my sample code. Fixed it to solve the case you mentioned.
    – Ali Almohsen
    yesterday


















  • It doesn't add anything that would result in additional columns, so another table isn't needed (presumably the MCQOption has a FK back to Question)
    – juharr
    yesterday










  • @juharr guess I oversimplified my sample code. Fixed it to solve the case you mentioned.
    – Ali Almohsen
    yesterday
















It doesn't add anything that would result in additional columns, so another table isn't needed (presumably the MCQOption has a FK back to Question)
– juharr
yesterday




It doesn't add anything that would result in additional columns, so another table isn't needed (presumably the MCQOption has a FK back to Question)
– juharr
yesterday












@juharr guess I oversimplified my sample code. Fixed it to solve the case you mentioned.
– Ali Almohsen
yesterday




@juharr guess I oversimplified my sample code. Fixed it to solve the case you mentioned.
– Ali Almohsen
yesterday

















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