Question

我有下表：

CREATE TABLE Phone(
PhoneId INT IDENTITY (1, 1) NOT NULL,
CONSTRAINT PK_Phone PRIMARY KEY CLUSTERED (PhoneId ASC))

CREATE TABLE Person(
PersonId INT IDENTITY (1, 1) NOT NULL,
MobilePhoneId INT NOT NULL,
PhoneId INT NOT NULL,
...

CONSTRAINT PK_Person PRIMARY KEY CLUSTERED (PersonId ASC),
CONSTRAINT FK_Projects_Phone FOREIGN KEY (PhoneId)
    REFERENCES Phone(PhoneId),
CONSTRAINT FK_Projects_MobileId FOREIGN KEY (MobilePhoneId)
    REFERENCES Phone(PhoneId),
...

我正在使用EF我想基于外键生成导航属性，删除Id部分，所以我想拥有导航属性Phone和MobilePhone。我试着调试，但是我没有找到存储外键的位置。请帮助使用TT模板：我修改的地点和内容。

Answer 1

您可以通过在设计器中编辑edmx或编辑T4模板来实现。当你想编辑T4模板（你的模型.tt文件）时，试着修改它：

public string NavigationProperty(NavigationProperty navProp)
{
    var endType = _typeMapper.GetTypeName(navProp.ToEndMember.GetEntityType());
    return string.Format(
        CultureInfo.InvariantCulture,
        "{0} {1} {2} {{ {3}get; {4}set; }}",
        AccessibilityAndVirtual(Accessibility.ForNavigationProperty(navProp)),
        navProp.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType,
        _code.Escape(navProp),
        _code.SpaceAfter(Accessibility.ForGetter(navProp)),
        _code.SpaceAfter(Accessibility.ForSetter(navProp)));
}

以这种方式：

public string NavigationProperty(NavigationProperty navProp)
{
    var navigationPropertyName = _code.Escape(navProp);
    var match = System.Text.RegularExpressions.Regex.Match(navigationPropertyName, "^(?<a>.+)Id$");
    if(match.Success)
        navigationPropertyName = match.Groups[1].Value;

    var endType = _typeMapper.GetTypeName(navProp.ToEndMember.GetEntityType());
    return string.Format(
        CultureInfo.InvariantCulture,
        "{0} {1} {2} {{ {3}get; {4}set; }}",
        AccessibilityAndVirtual(Accessibility.ForNavigationProperty(navProp)),
        navProp.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType,
        navigationPropertyName,
        _code.SpaceAfter(Accessibility.ForGetter(navProp)),
        _code.SpaceAfter(Accessibility.ForSetter(navProp)));
}

实体框架TT模板 - ＆gt;导航基于外键ID的属性名称

1 个答案: