coder · dannykopping · May 9, 2025 · May 9, 2025 · May 9, 2025 · May 9, 2025
diff --git a/cli/update_test.go b/cli/update_test.go
@@ -757,7 +757,7 @@ func TestUpdateValidateRichParameters(t *testing.T) {
 			err := inv.Run()
 			// TODO: improve validation so we catch this problem before it reaches the server
 			// 		 but for now just validate that the server actually catches invalid monotonicity
-			assert.ErrorContains(t, err, fmt.Sprintf("parameter value must be equal or greater than previous value: %s", tempVal))
+			assert.ErrorContains(t, err, "parameter value '1' must be equal or greater than previous value: 2")
 		}()
 
 		matches := []string{

diff --git a/coderd/testdata/parameters/groups/main.tf b/coderd/testdata/parameters/groups/main.tf
@@ -12,7 +12,7 @@ data "coder_parameter" "group" {
   name    = "group"
   default = try(data.coder_workspace_owner.me.groups[0], "")
   dynamic "option" {
-    for_each = data.coder_workspace_owner.me.groups
+    for_each = concat(data.coder_workspace_owner.me.groups, "bloob")
     content {
       name  = option.value
       value = option.value

diff --git a/codersdk/richparameters.go b/codersdk/richparameters.go
@@ -1,9 +1,8 @@
 package codersdk
 
 import (
-	"strconv"
-
 	"golang.org/x/xerrors"
+	"tailscale.com/types/ptr"
 
 	"github.com/coder/terraform-provider-coder/v2/provider"
 )
@@ -46,47 +45,31 @@ func ValidateWorkspaceBuildParameter(richParameter TemplateVersionParameter, bui
 }
 
 func validateBuildParameter(richParameter TemplateVersionParameter, buildParameter *WorkspaceBuildParameter, lastBuildParameter *WorkspaceBuildParameter) error {
-	var value string
+	var (
+		current  string
+		previous *string
+	)
 
 	if buildParameter != nil {
-		value = buildParameter.Value
+		current = buildParameter.Value
 	}
 
-	if richParameter.Required && value == "" {
-		return xerrors.Errorf("parameter value is required")
+	if lastBuildParameter != nil {
+		previous = ptr.To(lastBuildParameter.Value)
 	}
 
-	if value == "" { // parameter is optional, so take the default value
-		value = richParameter.DefaultValue
+	if richParameter.Required && current == "" {
+		return xerrors.Errorf("parameter value is required")
 	}
 
-	if lastBuildParameter != nil && lastBuildParameter.Value != "" && richParameter.Type == "number" && len(richParameter.ValidationMonotonic) > 0 {
-		prev, err := strconv.Atoi(lastBuildParameter.Value)
-		if err != nil {
-			return xerrors.Errorf("previous parameter value is not a number: %s", lastBuildParameter.Value)
-		}
-
-		current, err := strconv.Atoi(buildParameter.Value)
-		if err != nil {
-			return xerrors.Errorf("current parameter value is not a number: %s", buildParameter.Value)
-		}
-
-		switch richParameter.ValidationMonotonic {
-		case MonotonicOrderIncreasing:
-			if prev > current {
-				return xerrors.Errorf("parameter value must be equal or greater than previous value: %d", prev)
-			}
-		case MonotonicOrderDecreasing:
-			if prev < current {
-				return xerrors.Errorf("parameter value must be equal or lower than previous value: %d", prev)
-			}
-		}
+	if current == "" { // parameter is optional, so take the default value
+		current = richParameter.DefaultValue
 	}
 
 	if len(richParameter.Options) > 0 {
 		var matched bool
 		for _, opt := range richParameter.Options {
-			if opt.Value == value {
+			if opt.Value == current {
 				matched = true
 				break
 			}
@@ -95,7 +78,6 @@ func validateBuildParameter(richParameter TemplateVersionParameter, buildParamet
 		if !matched {
 			return xerrors.Errorf("parameter value must match one of options: %s", parameterValuesAsArray(richParameter.Options))
 		}
-		return nil
 	}
 
 	if !validationEnabled(richParameter) {
@@ -119,7 +101,7 @@ func validateBuildParameter(richParameter TemplateVersionParameter, buildParamet
 		Error:       richParameter.ValidationError,
 		Monotonic:   string(richParameter.ValidationMonotonic),
 	}
-	return validation.Valid(richParameter.Type, value)
+	return validation.Valid(richParameter.Type, current, previous)
 }
 
 func findBuildParameter(params []WorkspaceBuildParameter, parameterName string) (*WorkspaceBuildParameter, bool) {

diff --git a/go.mod b/go.mod
@@ -101,7 +101,7 @@ require (
 	github.com/coder/quartz v0.1.3
 	github.com/coder/retry v1.5.1
 	github.com/coder/serpent v0.10.0
-	github.com/coder/terraform-provider-coder/v2 v2.4.0-pre1.0.20250417100258-c86bb5c3ddcd
+	github.com/coder/terraform-provider-coder/v2 v2.4.0
 	github.com/coder/websocket v1.8.13
 	github.com/coder/wgtunnel v0.1.13-0.20240522110300-ade90dfb2da0
 	github.com/coreos/go-oidc/v3 v3.14.1
@@ -488,7 +488,7 @@ require (
 
 require (
 	github.com/anthropics/anthropic-sdk-go v0.2.0-beta.3
-	github.com/coder/preview v0.0.2-0.20250506154333-6f500ca7b245
+	github.com/coder/preview v0.0.2-0.20250509141204-fc9484dbe506
 	github.com/fsnotify/fsnotify v1.9.0
 	github.com/kylecarbs/aisdk-go v0.0.8
 	github.com/mark3labs/mcp-go v0.25.0

diff --git a/go.sum b/go.sum
@@ -907,8 +907,8 @@ github.com/coder/pq v1.10.5-0.20240813183442-0c420cb5a048 h1:3jzYUlGH7ZELIH4XggX
 github.com/coder/pq v1.10.5-0.20240813183442-0c420cb5a048/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/coder/pretty v0.0.0-20230908205945-e89ba86370e0 h1:3A0ES21Ke+FxEM8CXx9n47SZOKOpgSE1bbJzlE4qPVs=
 github.com/coder/pretty v0.0.0-20230908205945-e89ba86370e0/go.mod h1:5UuS2Ts+nTToAMeOjNlnHFkPahrtDkmpydBen/3wgZc=
-github.com/coder/preview v0.0.2-0.20250506154333-6f500ca7b245 h1:RGoANNubwwPZF8puiYAk2qbzhVgipBMNu8WIrY1VIbI=
-github.com/coder/preview v0.0.2-0.20250506154333-6f500ca7b245/go.mod h1:5VnO9yw7vq19hBgBqqBksE2BH53UTmNYH1QltkYLXJI=
+github.com/coder/preview v0.0.2-0.20250509141204-fc9484dbe506 h1:rQ7Queq1IZwEBjEIk9EJsVx7XHQ+Rvo2h72/A88BnPg=
+github.com/coder/preview v0.0.2-0.20250509141204-fc9484dbe506/go.mod h1:wXVvHiSmZv/7Q+Ug5I0B45TGM2U+YAjY4K3aB/6+KKo=
 github.com/coder/quartz v0.1.3 h1:hA2nI8uUA2fNN9uhXv2I4xZD4aHkA7oH3g2t03v4xf8=
 github.com/coder/quartz v0.1.3/go.mod h1:vsiCc+AHViMKH2CQpGIpFgdHIEQsxwm8yCscqKmzbRA=
 github.com/coder/retry v1.5.1 h1:iWu8YnD8YqHs3XwqrqsjoBTAVqT9ml6z9ViJ2wlMiqc=
@@ -921,8 +921,8 @@ github.com/coder/tailscale v1.1.1-0.20250422090654-5090e715905e h1:nope/SZfoLB9M
 github.com/coder/tailscale v1.1.1-0.20250422090654-5090e715905e/go.mod h1:1ggFFdHTRjPRu9Yc1yA7nVHBYB50w9Ce7VIXNqcW6Ko=
 github.com/coder/terraform-config-inspect v0.0.0-20250107175719-6d06d90c630e h1:JNLPDi2P73laR1oAclY6jWzAbucf70ASAvf5mh2cME0=
 github.com/coder/terraform-config-inspect v0.0.0-20250107175719-6d06d90c630e/go.mod h1:Gz/z9Hbn+4KSp8A2FBtNszfLSdT2Tn/uAKGuVqqWmDI=
-github.com/coder/terraform-provider-coder/v2 v2.4.0-pre1.0.20250417100258-c86bb5c3ddcd h1:FsIG6Fd0YOEK7D0Hl/CJywRA+Y6Gd5RQbSIa2L+/BmE=
-github.com/coder/terraform-provider-coder/v2 v2.4.0-pre1.0.20250417100258-c86bb5c3ddcd/go.mod h1:56/KdGYaA+VbwXJbTI8CA57XPfnuTxN8rjxbR34PbZw=
+github.com/coder/terraform-provider-coder/v2 v2.4.0 h1:uuFmF03IyahAZLXEukOdmvV9hGfUMJSESD8+G5wkTcM=
+github.com/coder/terraform-provider-coder/v2 v2.4.0/go.mod h1:2kaBpn5k9ZWtgKq5k4JbkVZG9DzEqR4mJSmpdshcO+s=
 github.com/coder/trivy v0.0.0-20250409153844-e6b004bc465a h1:yryP7e+IQUAArlycH4hQrjXQ64eRNbxsV5/wuVXHgME=
 github.com/coder/trivy v0.0.0-20250409153844-e6b004bc465a/go.mod h1:dDvq9axp3kZsT63gY2Znd1iwzfqDq3kXbQnccIrjRYY=
 github.com/coder/websocket v1.8.13 h1:f3QZdXy7uGVz+4uCJy2nTZyM0yTBj8yANEHhqlXZ9FE=

diff --git a/provisioner/terraform/resources.go b/provisioner/terraform/resources.go
@@ -749,13 +749,17 @@ func ConvertState(ctx context.Context, modules []*tfjson.StateModule, rawGraph s
 		if err != nil {
 			return nil, xerrors.Errorf("decode map values for coder_parameter.%s: %w", resource.Name, err)
 		}
+		var defaultVal string
+		if param.Default != nil {
+			defaultVal = *param.Default
+		}
 		protoParam := &proto.RichParameter{
 			Name:         param.Name,
 			DisplayName:  param.DisplayName,
 			Description:  param.Description,
 			Type:         param.Type,
 			Mutable:      param.Mutable,
-			DefaultValue: param.Default,
+			DefaultValue: defaultVal,
 			Icon:         param.Icon,
 			Required:     !param.Optional,
 			// #nosec G115 - Safe conversion as parameter order value is expected to be within int32 range

diff --git a/site/src/api/typesGenerated.ts b/site/src/api/typesGenerated.ts