Add reverse operation of Source Object Mapping

[shuqingzai]

Have you read the project readme?

• [x] Yes, but it does not include related information regarding my question.
• [x] Yes, but the steps described do not work.
• [x] Yes, but I am having difficulty understanding it and want clarification.

Describe your question A clear and concise description of what the question is. Include errors and go source files.

mapping#source-object The reverse operation does not seem to be supported, what should I do?

package example

// goverter:converter
type Converter interface {
    // goverter:map Address .
    Convert(Person) FlatPerson
}

type FlatPerson struct {
    Name    string
    Age     int
    Street  string
    ZipCode string
}
type Person struct {
    Name    string
    Age     int
    Address Address
}
type Address struct {
    Street  string
    ZipCode string
}

[jmattheis]

Currently, there is no automatic way for this. So you've to define every field via map:

// goverter:converter
type Converter interface {
    // goverter:map Address.Street Street
    // goverter:map Address.ZipCode ZipCode
    Convert(Person) FlatPerson
}

[jmattheis]

With v0.15.0 you can use goverter:autoMap: https://goverter.jmattheis.de/#/conversion/mapping?id=auto-map

The example of the first comment can be fixed with:

// goverter:converter
type Converter interface {
    // goverter:autoMap Address
    Convert(Person) FlatPerson
}