[Kotlin Server] Use query parameters

Author: Stexxe

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinServerCodegen.java

@@ -382,6 +382,13 @@ public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<Mo
         if (operations != null && !Objects.equals(library, Constants.JAXRS_SPEC)) {
             List<CodegenOperation> ops = operations.getOperation();
             ops.forEach(operation -> {
+                if (isKtor()) {
+                    ArrayList<CodegenParameter> params = new ArrayList<>();
+                    params.addAll(operation.pathParams);
+                    params.addAll(operation.queryParams);
+                    operation.vendorExtensions.put("ktor-params", params);
+                }
+
                 List<CodegenResponse> responses = operation.responses;
                 if (responses != null) {
                     responses.forEach(resp -> {

modules/openapi-generator/src/main/resources/kotlin-server/libraries/ktor/Paths.kt.mustache

@@ -18,7 +18,7 @@ object Paths {
      {{#allParams}}* @param {{paramName}} {{description}} {{^required}}(optional{{#defaultValue}}, default to {{{.}}}{{/defaultValue}}){{/required}}
      {{/allParams}}*/
     {{#hasParams}}
-    @Resource("{{{path}}}") class {{operationId}}({{#pathParams}}val {{paramName}}: {{{dataType}}}{{^required}}? = null{{/required}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/pathParams}})
+    @Resource("{{{path}}}") class {{operationId}}({{#vendorExtensions.ktor-params}}val {{paramName}}: {{{dataType}}}{{^required}}? = null{{/required}}{{#required}}{{#isNullable}}?{{/isNullable}}{{/required}}{{^-last}}, {{/-last}}{{/vendorExtensions.ktor-params}})
     {{/hasParams}}
     {{^hasParams}}
     @Resource("{{{path}}}") class {{operationId}}

samples/server/petstore/kotlin-server-modelMutable/src/main/kotlin/org/openapitools/server/Paths.kt

@@ -36,14 +36,14 @@ object Paths {
      * Multiple status values can be provided with comma separated strings
      * @param status Status values that need to be considered for filter 
      */
-    @Resource("/pet/findByStatus") class findPetsByStatus()
+    @Resource("/pet/findByStatus") class findPetsByStatus(val status: kotlin.collections.MutableList<kotlin.String>)
 
     /**
      * Finds Pets by tags
      * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
      * @param tags Tags to filter by 
      */
-    @Resource("/pet/findByTags") class findPetsByTags()
+    @Resource("/pet/findByTags") class findPetsByTags(val tags: kotlin.collections.MutableList<kotlin.String>)
 
     /**
      * Find pet by ID
@@ -145,7 +145,7 @@ object Paths {
      * @param username The user name for login 
      * @param password The password for login in clear text 
      */
-    @Resource("/user/login") class loginUser()
+    @Resource("/user/login") class loginUser(val username: kotlin.String, val password: kotlin.String)
 
     /**
      * Logs out current logged in user session

samples/server/petstore/kotlin-server/ktor/src/main/kotlin/org/openapitools/server/Paths.kt

@@ -36,14 +36,14 @@ object Paths {
      * Multiple status values can be provided with comma separated strings
      * @param status Status values that need to be considered for filter 
      */
-    @Resource("/pet/findByStatus") class findPetsByStatus()
+    @Resource("/pet/findByStatus") class findPetsByStatus(val status: kotlin.collections.List<kotlin.String>)
 
     /**
      * Finds Pets by tags
      * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
      * @param tags Tags to filter by 
      */
-    @Resource("/pet/findByTags") class findPetsByTags()
+    @Resource("/pet/findByTags") class findPetsByTags(val tags: kotlin.collections.List<kotlin.String>)
 
     /**
      * Find pet by ID
@@ -145,7 +145,7 @@ object Paths {
      * @param username The user name for login 
      * @param password The password for login in clear text 
      */
-    @Resource("/user/login") class loginUser()
+    @Resource("/user/login") class loginUser(val username: kotlin.String, val password: kotlin.String)
 
     /**
      * Logs out current logged in user session