build(seeder): add methods to Seeder to seed the tables

db/seeds/customer.go

@@ -0,0 +1,16 @@
+package seeds
+
+import "github.com/bxcodec/faker/v3"
+
+// CustomerSeed seeds the database with customers.
+func (s Seed) CustomerSeed() {
+	for i := 0; i < 100; i++ {
+		// prepare the statement.
+		stmt, _ := s.db.Prepare(`INSERT INTO customers(name, email) VALUES ($1, $2)`)
+		// execute query.
+		_, err := stmt.Exec(faker.Name(), faker.Email())
+		if err != nil {
+			panic(err)
+		}
+	}
+}

db/seeds/product.go

@@ -0,0 +1,20 @@
+package seeds
+
+import (
+	"math/rand"
+
+	"github.com/bxcodec/faker/v3"
+)
+
+// ProductSeed seeds product data.
+func (s Seed) ProductSeed() {
+	for i := 0; i < 100; i++ {
+		// prepare the statement.
+		stmt, _ := s.db.Prepare(`INSERT INTO products(name, price) VALUES ($1, $2)`)
+		// execute query.
+		_, err := stmt.Exec(faker.Word(), rand.Float32())
+		if err != nil {
+			panic(err)
+		}
+	}
+}

db/seeds/user.go

@@ -0,0 +1,19 @@
+package seeds
+
+import (
+	"github.com/bxcodec/faker/v3"
+)
+
+// UserSeed seeds the database with users.
+func (s Seed) UserSeed() {
+	for i := 0; i < 100; i++ {
+
+		// prepare the statement.
+		stmt, _ := s.db.Prepare(`INSERT INTO users(username) VALUES ($1)`)
+		// execute query.
+		_, err := stmt.Exec(faker.Name())
+		if err != nil {
+			panic(err)
+		}
+	}
+}

go.mod

@@ -3,6 +3,7 @@ module github.com/danvergara/dblab
 go 1.16
 
 require (
+	github.com/bxcodec/faker/v3 v3.6.0 // indirect
 	github.com/go-sql-driver/mysql v1.6.0
 	github.com/golang-migrate/migrate/v4 v4.14.1
 	github.com/hashicorp/errwrap v1.1.0 // indirect

go.sum

@@ -57,6 +57,8 @@ github.com/bitly/go-hostpool v0.0.0-20171023180738-a3a6125de932/go.mod h1:NOuUCS
 github.com/bkaradzic/go-lz4 v1.0.0/go.mod h1:0YdlkowM3VswSROI7qDxhRvJ3sLhlFrRRwjwegp5jy4=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
 github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869/go.mod h1:Ekp36dRnpXw/yCqJaO+ZrUyxD+3VXMFFr56k5XYrpB4=
+github.com/bxcodec/faker/v3 v3.6.0 h1:Meuh+M6pQJsQJwxVALq6H5wpDzkZ4pStV9pmH7gbKKs=
+github.com/bxcodec/faker/v3 v3.6.0/go.mod h1:gF31YgnMSMKgkvl+fyEo1xuSMbEuieyqfeslGYFjneM=
 github.com/cenkalti/backoff/v4 v4.0.2/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=