changeset

Changeset mutator for REL. Changesets allow filtering, casting, validation and definition of constraints when manipulating structs.

Install

go get github.com/Fs02/changeset

Example

package main
import (
"time""github.com/Fs02/rel""github.com/Fs02/rel/adapter/mysql""github.com/Fs02/changeset""github.com/Fs02/changeset/params"
)
typeProductstruct {
IDintNamestringPriceintCreatedAt time.TimeUpdatedAt time.Time
}
// ChangeProduct prepares data before database operation.// Such as casting value to appropriate types and perform validations.funcChangeProduct(productinterface{}, params params.Params) *changeset.Changeset {
ch:=changeset.Cast(product, params, []string{"name", "price"})
changeset.ValidateRequired(ch, []string{"name", "price"})
changeset.ValidateMin(ch, "price", 100)
returnch
}
funcmain() {
// initialize mysql adapter.adapter, _:=mysql.Open(dsn)
deferadapter.Close()
// initialize rel's repo.repo:=rel.New(adapter)
varproductProduct// Inserting Products.// Changeset is used when creating or updating your data.ch:=ChangeProduct(product, params.Map{
"name": "shampoo",
"price": 1000,
})
ifch.Error() !=nil {
// handle error
}
// Changeset can also be created directly from json string.jsonch:=ChangeProduct(product, params.ParseJSON(`{ "name": "soap", "price": 2000,	}`))
// Create products with changeset and return the result to &product,iferr:=repo.Insert(context.TODO(), &product, ch); err!=nil {
// handle error
}
}

License

Released under the MIT License