c# - EF Code First Migration insists on switching junction table names -


i have ef code first model containing table foo , table bar. many many relationship ef generated junction table called foobars:

createtable(     "dbo.foobar",     c => new         {             foo_id = c.int(nullable: false),             bar_id = c.int(nullable: false),         })     .primarykey(t => new { t.foo_id, t.bar_id })     .foreignkey("dbo.foos", t => t.foo_id, cascadedelete: true)     .foreignkey("dbo.bars", t => t.bar_id, cascadedelete: true)                  .index(t => t.foo_id)     .index(t => t.bar_id);

all fine. now, made changes model , added migration. foo entity has string , int properties, no changes in relations or anything. however, reason, ef insists junction table should called barfoos, , wants delete original foobars table:

 dropforeignkey("dbo.foobars", "foo_id", "dbo.foos");  dropforeignkey("dbo.foobars", "bar_id", "dbo.bars");  dropindex("dbo.foobars", new[] { "foo_id" });  dropindex("dbo.foobars", new[] { "bar_id" });   createtable(       "dbo.barfoos",            c => new                 {                     bar_id = c.int(nullable: false),                     foo_id = c.int(nullable: false),                 })  .primarykey(t => new { t.bar_id, t.foo_id })  .foreignkey("dbo.bars", t => t.bar_id, cascadedelete: true)  .foreignkey("dbo.foos", t => t.foo_id, cascadedelete: true)  .index(t => t.bar_id)  .index(t => t.foo_id);   droptable("dbo.foobars");

obviously copy records foobars barfoos, that's annoying hell, , i'll need keep doing make changes model , re-generate particular migration. why ef insisting junction table should other way around? can avoid this?

i've had happen - never did find solution workaround force table name in fluent api. e.g: 

modelbuilder.entity(of user)() _  .hasmany(function(u) u.roles) _  .withmany(function(r) r.users) _  .map(function(u) u.maprightkey("role_roleid").mapleftkey("user_userid").totable("userroles"))

(c#, match question language):

modelbuilder.entity<user>() .hasmany(u => u.roles) .withmany(r => r.users) .map(u => u.maprightkey("role_roleid").mapleftkey("user_userid").totable("userroles"));

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