Support RENDER_REGION env var for object storage commands (#253)

Allows users to set the region via `RENDER_REGION` instead of passing
`--region` on every command. The flag takes precedence when both
are provided, matching the SDK's behavior for consistency.

Author: metonym

cmd/object.go

@@ -12,6 +12,10 @@ var objectCmd = &cobra.Command{
 Object storage allows you to store and retrieve arbitrary data. Use these commands
 to list, upload, download, and delete objects.
 
+The --region flag specifies which region to use. Alternatively, set the
+RENDER_REGION environment variable. The --region flag takes precedence
+if both are provided.
+
 In local development mode (when running with 'render ea tasks dev' or with the
 --local flag), objects are stored in the .render/objects/ directory.
 
@@ -23,6 +27,7 @@ Available commands:
 
 Examples:
   render ea objects list --region=oregon
+  RENDER_REGION=oregon render ea objects list
   render ea objects put my/object/key --file=./data.txt --region=oregon
   render ea objects get my/object/key --file=./output.txt --region=oregon
   render ea objects delete my/object/key --region=oregon --yes
@@ -31,11 +36,8 @@ Examples:
 
 func init() {
 	// Add persistent flags shared by all object commands
-	objectCmd.PersistentFlags().String("region", "", "Target region (required)")
+	objectCmd.PersistentFlags().String("region", "", "Target region (or set RENDER_REGION env var)")
 	objectCmd.PersistentFlags().Bool("local", false, "Use local storage (.render/objects/) instead of cloud storage")
 
-	// Mark region as required for all object commands
-	objectCmd.MarkPersistentFlagRequired("region")
-
 	EarlyAccessCmd.AddCommand(objectCmd)
 }

cmd/objectdelete.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/spf13/cobra"
 
+	"github.com/render-oss/cli/pkg/cfg"
 	"github.com/render-oss/cli/pkg/command"
 	"github.com/render-oss/cli/pkg/storage"
 	"github.com/render-oss/cli/pkg/text"
@@ -25,7 +26,10 @@ func (i *ObjectDeleteInput) Validate(interactive bool) error {
 		return fmt.Errorf("key is required")
 	}
 	if i.Region == "" {
-		return fmt.Errorf("--region is required")
+		i.Region = cfg.GetRegion()
+	}
+	if i.Region == "" {
+		return fmt.Errorf("--region is required (or set RENDER_REGION environment variable)")
 	}
 	return nil
 }

cmd/objectget.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/spf13/cobra"
 
+	"github.com/render-oss/cli/pkg/cfg"
 	"github.com/render-oss/cli/pkg/command"
 	"github.com/render-oss/cli/pkg/storage"
 	"github.com/render-oss/cli/pkg/text"
@@ -23,7 +24,10 @@ func (i *ObjectGetInput) Validate(interactive bool) error {
 		return fmt.Errorf("key is required")
 	}
 	if i.Region == "" {
-		return fmt.Errorf("--region is required")
+		i.Region = cfg.GetRegion()
+	}
+	if i.Region == "" {
+		return fmt.Errorf("--region is required (or set RENDER_REGION environment variable)")
 	}
 	return nil
 }

cmd/objectlist.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/spf13/cobra"
 
+	"github.com/render-oss/cli/pkg/cfg"
 	"github.com/render-oss/cli/pkg/command"
 	"github.com/render-oss/cli/pkg/storage"
 	"github.com/render-oss/cli/pkg/text"
@@ -18,7 +19,10 @@ type ObjectListInput struct {
 
 func (i *ObjectListInput) Validate(interactive bool) error {
 	if i.Region == "" {
-		return fmt.Errorf("--region is required")
+		i.Region = cfg.GetRegion()
+	}
+	if i.Region == "" {
+		return fmt.Errorf("--region is required (or set RENDER_REGION environment variable)")
 	}
 	if i.Limit <= 0 {
 		return fmt.Errorf("--limit must be greater than 0")

cmd/objectput.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/spf13/cobra"
 
+	"github.com/render-oss/cli/pkg/cfg"
 	"github.com/render-oss/cli/pkg/command"
 	"github.com/render-oss/cli/pkg/storage"
 	"github.com/render-oss/cli/pkg/text"
@@ -25,7 +26,10 @@ func (i *ObjectPutInput) Validate(interactive bool) error {
 		return fmt.Errorf("--file is required")
 	}
 	if i.Region == "" {
-		return fmt.Errorf("--region is required")
+		i.Region = cfg.GetRegion()
+	}
+	if i.Region == "" {
+		return fmt.Errorf("--region is required (or set RENDER_REGION environment variable)")
 	}
 	return nil
 }

pkg/cfg/cfg.go

@@ -24,6 +24,10 @@ func GetAPIKey() string {
 	return os.Getenv("RENDER_API_KEY")
 }
 
+func GetRegion() string {
+	return os.Getenv("RENDER_REGION")
+}
+
 func AddUserAgent(header http.Header) http.Header {
 	header.Add("user-agent", fmt.Sprintf("render-cli/%s (%s)", Version, getOSInfoOnce()))
 	return header