Example #1
0
// RenderInContext - Renders compiled component from context.
// Stores result in context to be retrieved with `components.ContextRendered`.
func RenderInContext(next xhandler.HandlerC) xhandler.HandlerC {
	return xhandler.HandlerFuncC(func(ctx context.Context, w http.ResponseWriter, r *http.Request) {
		c, ok := components.CompiledFromContext(ctx)
		if !ok {
			helpers.WriteError(w, r, http.StatusBadRequest, "component not compiled")
			return
		}
		t, _ := components.TemplateContext(ctx)
		res, err := components.Render(c, t)
		if err != nil {
			helpers.WriteError(w, r, http.StatusExpectationFailed, fmt.Sprintf("render error: %v", err))
			return
		}
		ctx = components.NewRenderedContext(ctx, res)
		next.ServeHTTPC(ctx, w, r)
	})
}
Example #2
0
// WriteRenderedHTML - Writes rendered component from context to response writer.
func WriteRenderedHTML(ctx context.Context, w http.ResponseWriter, r *http.Request) {
	res, ok := components.RenderedFromContext(ctx)
	if !ok {
		helpers.WriteError(w, r, http.StatusBadRequest, "component not rendered")
		return
	}
	w.Header().Set("Content-Type", "text/html")
	w.Write([]byte(res.HTML()))
}
Example #3
0
// WriteRenderedJSON - Writes rendered component from context to response writer.
func WriteRenderedJSON(ctx context.Context, w http.ResponseWriter, r *http.Request) {
	res, ok := components.RenderedFromContext(ctx)
	if !ok {
		helpers.WriteError(w, r, http.StatusBadRequest, "component not rendered")
		return
	}
	w.Header().Set("Content-Type", "application/json")
	if err := json.NewEncoder(w).Encode(res); err != nil {
		glog.Warningf("[api] response encode error: %v", err)
	}
}
Example #4
0
// CompileInContext - Compiles component from context.
// Stores result in context to be retrieved with `components.FromContext`.
func CompileInContext(next xhandler.HandlerC) xhandler.HandlerC {
	return xhandler.HandlerFuncC(func(ctx context.Context, w http.ResponseWriter, r *http.Request) {
		compiled, err := compiler.Compile(ctx)
		if err != nil {
			helpers.WriteError(w, r, http.StatusExpectationFailed, fmt.Sprintf("compile error: %v", err))
			return
		}
		ctx = components.NewCompiledContext(ctx, compiled)
		next.ServeHTTPC(ctx, w, r)
	})
}
Example #5
0
// UnmarshalFromBody - Unmarshals component from request bodyCompileInContext() on certain methods.
// Stores result in context to be retrieved with `components.FromContext`.
func UnmarshalFromBody(methods ...string) middlewares.Handler {
	return middlewares.ToHandler(func(ctx context.Context, w http.ResponseWriter, r *http.Request, next xhandler.HandlerC) {
		if !helpers.Contain(methods, r.Method) {
			next.ServeHTTPC(ctx, w, r)
			return
		}
		c := new(components.Component)
		err := json.NewDecoder(r.Body).Decode(c)
		if err != nil {
			helpers.WriteError(w, r, http.StatusBadRequest, err.Error())
			return
		}
		ctx = components.NewContext(ctx, c)
		next.ServeHTTPC(ctx, w, r)
	})
}
Example #6
0
// UnmarshalFromQuery - Unmarshals component from `json` query on certain methods.
// Stores result in context to be retrieved with `components.FromContext`.
func UnmarshalFromQuery(methods ...string) middlewares.Handler {
	return middlewares.ToHandler(func(ctx context.Context, w http.ResponseWriter, r *http.Request, next xhandler.HandlerC) {
		if len(methods) != 0 && !helpers.Contain(methods, r.Method) {
			next.ServeHTTPC(ctx, w, r)
			return
		}

		// Read component from request
		c, err := readComponent(r)
		if err != nil {
			helpers.WriteError(w, r, http.StatusBadRequest, err.Error())
			return
		}

		// Create a context with component and move to next handler
		ctx = components.NewContext(ctx, c)
		next.ServeHTTPC(ctx, w, r)
	})
}