SS-Collection | commonly used resources , only for personal collection
kandi X-RAY | SS-Collection Summary
kandi X-RAY | SS-Collection Summary
A collection of commonly used resources, only for personal collection
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QUESTION
I am have created some of views that JSON i want to provide to frontend developers. i want front-end developer to access this views only. not the entire collection or database. this views contains cross-collection "$lookup" aggregations.
how could we create user with roles that have only access to "views" of the "db" only not even "collections"?
...ANSWER
Answered 2021-Jul-16 at 09:34Permissions in MongoDB are based on roles. Would be like this:
QUESTION
For some time I've been following the "First Class Collections" rule from Object Calisthenics in my domain design. In order to avoid creating a useless "Collection" table though, I use the table splitting configuration from Entity Framework.
But if for whatever reason I have a Parent
class that doesn't have properties besides its Id and the child collection, I get the exception:
InvalidOperationException: A dependent property in a ReferentialConstraint is mapped to a store-generated column. Column: 'Id'.
The weird thing is that the database is created correctly, and I can query from it, but saving isn't possible.
If I simply add another property to the Parent
, the problem disappears, which is even more strange.
I narrowed it down to a very simple test case:
Program.cs
...ANSWER
Answered 2020-May-05 at 13:51Maintaining the logical order of configuration from Parent to Child is natural when configuring directly from the DbContext class, but when you separate the config using EntityTypeConfiguration
, that might not be the case.
This seems to be a bug in Entity Framework for this specific scenario, since it works in most cases.
To make sure it always works, simply call the configuration for classes higher in the hierarchy first.
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