started doing framing

ui/amcontext.go

@@ -9,33 +9,65 @@
 package ui
 
 import (
+	"bytes"
 	"net/http"
 
+	"github.com/CloudyKit/jet/v6"
 	"github.com/labstack/echo/v4"
 )
 
 type AmContext interface {
 	Render(string) error
+	SubRender(string) ([]byte, error)
 	SetRC(int)
+	VarMap() jet.VarMap
 }
 
 type amContext struct {
 	echoContext echo.Context
 	httprc      int
-}
-
-func (c *amContext) SetRC(rc int) {
-	c.httprc = rc
+	rendervars  jet.VarMap
 }
 
 func (c *amContext) Render(name string) error {
 	return c.echoContext.Render(c.httprc, name, c)
 }
 
+func (c *amContext) SubRender(name string) ([]byte, error) {
+	view, err := views.GetTemplate(name)
+	if err != nil {
+		return nil, err
+	}
+	buf := new(bytes.Buffer)
+	err = view.Execute(buf, c.VarMap(), c)
+	return buf.Bytes(), err
+}
+
+func (c *amContext) SetRC(rc int) {
+	c.httprc = rc
+}
+
+func (c *amContext) VarMap() jet.VarMap {
+	return c.rendervars
+}
+
 func NewAmContext(ctxt echo.Context) AmContext {
 	rc := amContext{
 		echoContext: ctxt,
 		httprc:      http.StatusOK,
+		rendervars:  make(jet.VarMap),
 	}
+	ctxt.Set("amsterdam_context", &rc)
 	return &rc
 }
+
+func AmContextFromEchoContext(ctxt echo.Context) AmContext {
+	myctxt := ctxt.Get("amsterdam_context")
+	if myctxt != nil {
+		rc, ok := myctxt.(AmContext)
+		if ok {
+			return rc
+		}
+	}
+	return nil
+}