delphimvcframework/sources/MVCFramework.View.Renderers.Mustache.pas

82 lines
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// ***************************************************************************
//
// Delphi MVC Framework
//
// Copyright (c) 2010-2017 Daniele Teti and the DMVCFramework Team
//
// https://github.com/danieleteti/delphimvcframework
//
// ***************************************************************************
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// ***************************************************************************
unit MVCFramework.View.Renderers.Mustache;
interface
uses
MVCFramework, System.Generics.Collections, System.SysUtils,
MVCFramework.Commons, System.IOUtils;
type
{ This class implements the mustache view engine for server side views }
TMVCMustacheViewEngine = class(TMVCBaseViewEngine)
public
procedure Execute; override;
end;
implementation
uses
SynMustache,
SynCommons;
{$WARNINGS OFF}
procedure TMVCMustacheViewEngine.Execute;
var
ViewFileName: string;
ViewTemplate: RawUTF8;
ViewEngine: TSynMustache;
DataObj: TPair<string, string>;
lSJSON: string;
lFirst: Boolean;
begin
ViewFileName := GetRealFileName(ViewName);
if not FileExists(ViewFileName) then
raise EMVCFrameworkViewException.CreateFmt('View [%s] not found', [ViewName]);
ViewTemplate := StringToUTF8(TFile.ReadAllText(ViewFileName, TEncoding.UTF8));
ViewEngine := TSynMustache.Parse(ViewTemplate);
lSJSON := '{';
if Assigned(ViewModel) then
begin
lFirst := True;
for DataObj in ViewModel do
begin
if not lFirst then
lSJSON := lSJSON + ',';
lSJSON := lSJSON + '"' + DataObj.Key + '":' + DataObj.Value;
lFirst := False;
end;
lSJSON := lSJSON + '}';
end;
SetOutput(UTF8Tostring(ViewEngine.RenderJSON(lSJSON)));
end;
{$WARNINGS ON}
end.