mirror of
https://github.com/danieleteti/delphimvcframework.git
synced 2024-11-16 16:25:54 +01:00
148 lines
3.7 KiB
ObjectPascal
148 lines
3.7 KiB
ObjectPascal
unit MainFormU;
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interface
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uses
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Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
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Vcl.Controls, Vcl.Forms, Vcl.Dialogs, FireDAC.Stan.Intf, FireDAC.Stan.Option,
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FireDAC.Stan.Param, FireDAC.Stan.Error, FireDAC.DatS, FireDAC.Phys.Intf,
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FireDAC.DApt.Intf, Data.DB, FireDAC.Comp.DataSet, FireDAC.Comp.Client,
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Vcl.Grids, Vcl.DBGrids, Vcl.ExtCtrls, Vcl.StdCtrls, MVCFramework.RESTClient,
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Vcl.DBCtrls;
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type
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TForm4 = class(TForm)
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Panel1: TPanel;
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DBGrid1: TDBGrid;
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FDMemTable1: TFDMemTable;
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FDMemTable1id: TIntegerField;
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FDMemTable1code: TStringField;
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FDMemTable1description: TStringField;
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FDMemTable1price: TCurrencyField;
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DataSource1: TDataSource;
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btnGetListAsynch: TButton;
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btnGetListSynch: TButton;
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DBNavigator1: TDBNavigator;
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procedure Button1Click(Sender: TObject);
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procedure btnGetListAsynchClick(Sender: TObject);
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procedure FormCreate(Sender: TObject);
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procedure FDMemTable1BeforePost(DataSet: TDataSet);
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procedure FDMemTable1BeforeDelete(DataSet: TDataSet);
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procedure FormClose(Sender: TObject; var Action: TCloseAction);
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private
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CltAsynch: TRESTClient;
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FLoading: Boolean;
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Clt: TRESTClient;
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{ Private declarations }
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procedure ShowError(const AResponse: IRESTResponse);
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public
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procedure RefreshAsynch;
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end;
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var
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Form4: TForm4;
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implementation
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uses
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ObjectsMappers;
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{$R *.dfm}
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procedure TForm4.btnGetListAsynchClick(Sender: TObject);
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begin
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// this an asychronous request... just like you could do in jQuery
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CltAsynch.Asynch(
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procedure(Res: IRESTResponse)
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begin
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FDMemTable1.Close;
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FDMemTable1.Open;
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FLoading := true;
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FDMemTable1.AppendFromJSONArrayString(Res.BodyAsString);
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FLoading := false;
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end,
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nil, nil, true)
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.doGET('/articles', []);
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end;
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procedure TForm4.Button1Click(Sender: TObject);
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begin
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RefreshAsynch;
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end;
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procedure TForm4.FDMemTable1BeforeDelete(DataSet: TDataSet);
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var
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Res: IRESTResponse;
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begin
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if FDMemTable1.State = dsBrowse then
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Res := Clt.DataSetDelete('/articles', FDMemTable1id.AsString);
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if not(Res.ResponseCode in [200, 201]) then
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begin
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ShowError(Res);
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Abort;
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end
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else
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Refresh;
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end;
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procedure TForm4.FDMemTable1BeforePost(DataSet: TDataSet);
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var
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Res: IRESTResponse;
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begin
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if not FLoading then
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begin
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if FDMemTable1.State = dsInsert then
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Res := Clt.DataSetInsert('/articles', FDMemTable1)
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else
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Res := Clt.DataSetUpdate('/articles', FDMemTable1, FDMemTable1id.AsString);
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if not(Res.ResponseCode in [200, 201]) then
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begin
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ShowError(Res);
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Abort;
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end
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else
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RefreshAsynch;
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end;
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end;
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procedure TForm4.FormClose(Sender: TObject; var Action: TCloseAction);
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begin
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CltAsynch.Free;
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Clt.Free;
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end;
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procedure TForm4.FormCreate(Sender: TObject);
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begin
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Clt := TRESTClient.Create('localhost', 8080);
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// just for demo, here's the asych version. It is the same :-)
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// check the GETLISTASYNCH button
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CltAsynch := TRESTClient.Create('localhost', 8080);
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end;
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procedure TForm4.RefreshAsynch;
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var
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Res: IRESTResponse;
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lRNo: Integer;
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begin
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// this a simple sychronous request...
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Res := Clt.doGET('/articles', []);
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lRNo := FDMemTable1.RecNo;
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FDMemTable1.Close;
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FDMemTable1.Open;
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FLoading := true;
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FDMemTable1.AppendFromJSONArrayString(Res.BodyAsString);
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FDMemTable1.RecNo := lRNo;
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FLoading := false;
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end;
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procedure TForm4.ShowError(const AResponse: IRESTResponse);
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begin
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ShowMessage(
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AResponse.ResponseCode.ToString + ': ' + AResponse.ResponseText + sLineBreak +
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AResponse.BodyAsJsonObject.Get('message').JsonValue.Value);
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end;
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end.
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