Entity Framework Feature Suggestions

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Entity Framework Feature Suggestions

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  1. Show diagram nodes under the EDMX node in solution explorer

    At the moment if I want to work on a specific diagram, I have to open the default diagram in the solution explorer, open the model browser, then open the diagram I'm interested in. Can we have diagrams listed as nodes underneath the EDMX nodes in solution explorer, allowing us to go straight to the diagram we are actually interested in?

    6 votes
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      1 comment  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
    • 6 votes
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        1 comment  ·  Flag idea as inappropriate…  ·  Admin →
      • Add the ability to persist TimeSpan values (and others) as strings

        The immediate need is to be able to map between TimeSpan values on the CLR side and their equivalent string representations on the database side.

        Currently TimeSpan can only be mapped to the SQL time datatype, which does not make much sense since the time SQL type is meant for storing time-of-day while TimeSpan is meant to represent an arbitrary amount of time. Mapping between the two limits the TimeSpan to a 24 hours interval, which rarely makes sense.

        In our current DAL we do this by persisting TimeSpan values as strings, calling TimeSpan.ToString() on the way down and TimeSpan.Parse()…

        6 votes
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          0 comments  ·  Flag idea as inappropriate…  ·  Admin →
        • Allow stored procedures to be used to navigate relationships

          There are many developers who are in shops that don't allow non-stored procedure calls to SQL Server. It would be really nice if there was something in EF where we could select a relationship in the EF designer, go to its mapping and select a stored procedure for each role in the relationship. It might go something like this:

          1.We would create a relationship between two entitties, say Author and Book. Both entities would be required to expose foreign keys (the developer can make them private if they want).
          2.A stored procedure would be created that would navigate from each…

          6 votes
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            0 comments  ·  Flag idea as inappropriate…  ·  Admin →
          • Change schema for dbContext pre connection

            Build one model from code first and then use new TennantContext(connection, schema).

            Exactly as HasDefaultSchema but possible to change with new connection.

            No migrations and no other special features needed.

            Lets say I have users data stored in one DB but in different schemas (each user has own schema). I have 1000+ of users, every model for every user is cached by IDbModelCacheKeyProvider is RAM kill.

            P.S. Alter user set default schema is not a solution

            Thanks

            6 votes
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              0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
            • Provide Refactor Into Existing Complex Type

              In the designer we can Refactor Into New Complex Type, but once we have done this we cannot Refactor all other instances into Existing Complex Type.

              6 votes
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                0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
              • create an secondary index from edmx designer tool for generate database

                when create a database from model some times need create secondary index for restrict some case of data

                6 votes
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                  1 comment  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                • Make Data Annotations more flexible to use and to customize

                  DataAnnotations are only really useful when the rules and the error messages can buble the whole way up to the ui. Some modern ui frameworks already make use of this - e.g. Breeze. But DataAnnotations are just not as flexible as we need them. Some known problems are:

                  - you can define your own error messages within the DataAnotation - but those are not easy to localize. To my mind the decission about displaying the content error message should be left to the client. As the client could possibly be a web page, a smartphone or even a coffee machine…

                  6 votes
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                    1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                  • Support read-only mapping to tables without key

                    Allow mapping of database views without requiring the Key Attribute

                    When mapping entitis to Views, it´s common that no Key can be set, bescause the view does not provide it and you can´t map it. The idea is:

                    * Make it possible to map to Views (or tables) in a read only fashion that does not require the Key Attribute

                    6 votes
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                      0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                    • DbContext.Database Interface

                      Please please please....

                      Can we have DbContext.Database Interfaced so that we can unit test our EF code first operations on DbContext.Database

                      thanks!
                      Dean

                      6 votes
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                        1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                      • 6 votes
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                          1 comment  ·  Flag idea as inappropriate…  ·  Admin →
                        • Create method should initializer collection navigation properties

                          I've found that in Code First entities, my "many" properties such as

                          property List<People> SomePropertyName {get; set;}

                          are null when the entity is instantiated. This breaks the common "convention" of just simply adding entities to the list:

                          You can't just
                          MyEntity.SomeManyProperty.Add(SomeOtherEntityInstance);

                          You have to do
                          MyEntity.SomeManyProperty = new List<SomeOtherEntity> { SomeOtherEntityInstance };

                          but, of course, you can't just do that, because you might wipe out an existing list, if there is one, so you must then do a check first. Ugly.

                          As a lesser evil, I've resorted to instantiating empty lists in the constructor of my entities but this is…

                          6 votes
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                            5 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                          • Optional Convention that assigns Default Value to not nullable types

                            When using code first with an existing database, the "can not assign null to a non nullable type" exception can be realy painfull, because the compiler gives no warning, when i project a int? to a int.

                            It would be very usefull to have a Convention / Configuration that enables the automatic use of GetValueOrDefault for these cases.

                            6 votes
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                              0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                            • Support for generic complex types

                              You should support for using generic complex types. Consider scenerio where I would like to create Rage<T> type. Now I must create RangeOfInt32, RangeOfInt64, RangeOfDecimal, etc. It will be also great if that class could be defined outside of the model.

                              6 votes
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                                0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                              • Cross Model Navigation Properties

                                I've read http://blogs.msdn.com/b/adonet/archive/2008/11/25/working-with-large-models-in-entity-framework-part-2.aspx

                                but, it's a total mission and I haven't had enough time to get it working. I'd like to add an association which bridges two models using the designer. Both models contain tables from the same database.

                                6 votes
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                                  0 comments  ·  Flag idea as inappropriate…  ·  Admin →
                                • Sort and autoformat xml inside .edmx files before saving via EF Designer

                                  Need the EF designer to generate nodes inside .edmx file in exactly the same order they are present in the database (currently a list of entity properties is saved in reverse order in mappings section, also when you update the model from the database schema the ordering is messed up). Also before saving .edmx file EF Designer should auto format the document. This would help significantly with branching, merging and resolving conflicts during merge operations of .edmx files.

                                  Steps to reproduce: (1) Generate EF data model based on an existing database (2) Add a couple of new columns, indexes, foreign…

                                  6 votes
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                                    0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                                  • Designer support for user-defined functions (UDFs, including scalar-valued functions)

                                    Scalar function is used usually some custom function to retrieve some only one value.
                                    eg.custom ID not Guid

                                    5 votes
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                                      1 comment  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                                    • support for ordering in Include()

                                      using the include() with a 1 to many relationship, the data are loaded in the list without any specific order, forcing often to reload directly specifying the sort order

                                      5 votes
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                                        0 comments  ·  runtime  ·  Flag idea as inappropriate…  ·  Admin →
                                      • Auto Create CRUD stored procedure

                                        EF should have the ability to automatically create basic CRUD stored procedures for every table. These basic CRUD stored procedures will only focus on a single table and all it's columns.

                                        An advanced feature would be the ability to auto generate CRUD stored procedures that take into account parent and child tables or many to many scenarios, etc.

                                        Other features would be to create stored procedures that allow for paging and streaming of large amounts of data. Say you have a web page that list contacts and you want ot show the 10th page. It would be ice to autogenerate…

                                        5 votes
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                                          0 comments  ·  tools  ·  Flag idea as inappropriate…  ·  Admin →
                                        • Update with Where Clause

                                          We should be able to update with a where clause.

                                          For example, you have an entity named "Product" that is bound to a "User". You want to be sure that the update is done on the product that you have your new values but also to the current user when the product is saved. Normally, in SQL we do a Update statement on Product table by setting new values to the product (where clause). What is missing is the ability to also add a AND statement to add the User Id. This way, we can be sure that the entity…

                                          5 votes
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                                            0 comments  ·  Flag idea as inappropriate…  ·  Admin →
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