Entity Framework database-first and column attribute does not work

Question

I have a database with the constraint that all primary keys end with _Id. For my EF classes, I wanted to omit the underscore so I changed the T4 template for the generation of properties to this (CodeStringGenerator.Property):

public string Property(EdmProperty edmProperty)
{
    var dbName = _code.Escape(edmProperty);
    var propResult = "";

    if(dbName.Contains("_"))
    {
        propResult = "[Column(\"" + dbName + "\")]\r\n\t";
        dbName = dbName.Replace("_", "");
    }

    return propResult + string.Format(
        CultureInfo.InvariantCulture,
        "{0} {1} {2} {{ {3}get; {4}set; }}",
        Accessibility.ForProperty(edmProperty),
        _typeMapper.GetTypeName(edmProperty.TypeUsage),
        dbName,
        _code.SpaceAfter(Accessibility.ForGetter(edmProperty)),
        _code.SpaceAfter(Accessibility.ForSetter(edmProperty)));
}

This removes all "_" from the property name and writes a column attribute to the property. But it seems like this breaks EF. With the column attribute, EF throws an exception every time I try to make anything like selecting an entity.

The exception is:

The entity type ENTITY is not part of the model for the current context.

If I write the original name like in the database it EF will work with the entity but not if I add the column attribute.

Is there any way to rename all properties or make the column attribute work? Using EF6.2

Answer 1

Afters some days of researching i did not found a way other then using AutoMapper for OneWay transformation of Column to Entity.Property names so i decided to switch my ORM to a simpler one that works Primary with the Database First approach.

Conclusion: Not Possible