How to add an action button to the toolbar in a View

Please refer here for general informations about Views and Action Controllers.

if you want to add one or more action buttons to a View toolbar, you have to add a ToolController in MainTable/Controller/ToolViews node and set the specific parameters for the tool.

Example from HelloKitto: two buttons added to export data in Text and CSV format (standard tools)

# view dolls.yaml

Type: Data
.....
MainTable:
  Model: Doll
  Fields:
.....
  Controller:
.....
    ToolViews:
      DownloadText:
        DisplayLabel: _(Download in TXT)
        Controller: ExportTextTool
          RequireSelection: False
          IncludeHeader: False
          ClientFileName: DollList.txt
      DownloadCSV:
        DisplayLabel: _(Download in CSV)
        ImageName: download
        Controller: ExportCSVTool
          RequireSelection: False

---

You can use one of the standard controllers included in Kitto^x or define a new one by your own. In this case you have to define the new Tool in a Delphi Tool.pas unit of your project. You have to inherit from TKXDataToolController in case you need to pass recordId to the tool, otherwise use TKXToolController.

The following example from a real project defines a tool that raises an exception in case field Petitioner has not been filled. The tool is used in the BeforeExecute node of a standard tool to prevent sending a mail.

#unit tool.pas
type
  TCheckPetitioner Controller = class(TKXDataToolController)
  strict private
  strict protected
    procedure ExecuteTool; override;
  public
  end;

{ TCheckPetitioner Controller }

procedure TCheckPetitioner Controller.ExecuteTool;
begin
  //check presence of field petitioner 
  if ServerRecord.FieldByName('Petitioner').AsString = '' then 
    raise Exception.Create('Petitioner has no value: it is impossible to send the email');
  inherited;
end;

  Controller:
    AutoOpen: True
    ToolViews:
      CheckPetitioner :
        IsVisible: False
        Controller: CheckPetitioner
      SendEmail:
        BeforeExecute:
          ToolView: CheckPetitioner 
        Controller: SendEmail
....