chore(golang): implement logic for DELETE requests

Part of #9

Author: php-coder

examples/go/routes.go

@@ -5,7 +5,6 @@ import "encoding/json"
 import "fmt"
 import "net/http"
 import "os"
-import "strconv"
 import "github.com/go-chi/chi"
 import "github.com/jmoiron/sqlx"
 
@@ -35,7 +34,6 @@ type CategoryInfoDto struct {
 }
 
 func registerRoutes(r chi.Router, db *sqlx.DB) {
-	categories := make(map[int]CategoryDto)
 
 	r.Get("/v1/categories/count", func(w http.ResponseWriter, r *http.Request) {
 		var result CounterDto
@@ -165,8 +163,19 @@ func registerRoutes(r chi.Router, db *sqlx.DB) {
 	})
 
 	r.Delete("/v1/categories/{categoryId}", func(w http.ResponseWriter, r *http.Request) {
-		id, _ := strconv.Atoi(chi.URLParam(r, "categoryId"))
-		delete(categories, id)
+		args := map[string]interface{}{
+			"categoryId": chi.URLParam(r, "categoryId"),
+		}
+		_, err := db.NamedExec(
+			"DELETE FROM categories WHERE id = :categoryId",
+			args,
+		)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "NamedExec failed: %v\n", err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+
 		w.WriteHeader(http.StatusNoContent)
 	})
 

src/templates/routes.go.ejs

@@ -5,7 +5,6 @@ import "encoding/json"
 import "fmt"
 import "net/http"
 import "os"
-import "strconv"
 import "github.com/go-chi/chi"
 import "github.com/jmoiron/sqlx"
 
@@ -169,12 +168,12 @@ endpoints.forEach(function(endpoint) {
 });
 -%>
 func registerRoutes(r chi.Router, db *sqlx.DB) {
-	categories := make(map[int]CategoryDto)
 <%
 endpoints.forEach(function(endpoint) {
 	const path = convertPathPlaceholders(endpoint.path);
 
 	endpoint.methods.forEach(function(method) {
+		const params = extractParams(method.query);
 		const hasGetOne = method.name === 'get';
 		const hasGetMany = method.name === 'get_list';
 		if (hasGetOne || hasGetMany) {
@@ -184,7 +183,6 @@ endpoints.forEach(function(endpoint) {
 			const dtoName = dtoInCache(dto) ? dtoCache[cacheKey] : dto.name;
 			const dataType = hasGetMany ? '[]' + dtoName : dtoName;
 
-			const params = extractParams(method.query);
 			const queryFunction = hasGetOne ? 'Get' : 'Select';
 			// TODO: handle only particular method (get/post/put)
 			// TODO: include method/path into an error message
@@ -227,9 +225,7 @@ endpoints.forEach(function(endpoint) {
 			// TODO: do we really need signature and cache?
 			const cacheKey = dto ? dto.signature : null;
 			const dataType = dtoInCache(dto) ? dtoCache[cacheKey] : dto.name;
-
 			// TODO: align args properly (like gofmt does)
-			const params = extractParams(method.query);
 %>
 	r.Post("<%- path %>", func(w http.ResponseWriter, r *http.Request) {
 		var dto <%- dataType %>
@@ -257,9 +253,7 @@ endpoints.forEach(function(endpoint) {
 			// TODO: do we really need signature and cache?
 			const cacheKey = dto ? dto.signature : null;
 			const dataType = dtoInCache(dto) ? dtoCache[cacheKey] : dto.name;
-
 			// TODO: align args properly (like gofmt does)
-			const params = extractParams(method.query);
 %>
 	r.Put("<%- path %>", func(w http.ResponseWriter, r *http.Request) {
 		var dto <%- dataType %>
@@ -285,8 +279,19 @@ endpoints.forEach(function(endpoint) {
 		if (method.name === 'delete') {
 %>
 	r.Delete("<%- path %>", func(w http.ResponseWriter, r *http.Request) {
-		id, _ := strconv.Atoi(chi.URLParam(r, "categoryId"))
-		delete(categories, id)
+		args := map[string]interface{}{
+			<%- formatParamsAsGolangMap(params) %>
+		}
+		_, err := db.NamedExec(
+			"<%- formatQuery(method.query) %>",
+			args,
+		)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "NamedExec failed: %v\n", err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+
 		w.WriteHeader(http.StatusNoContent)
 	})
 <%