Renders a preview panel for each channel in self.data_list, displaying the channel's email layout at its configured width.
Channel — set as ReportType in def_report.
def Render(self, Param1="", Param2="", Param3="") -> str:
No parameters are used. The report iterates over self.data_list, where each row must supply a channel code as its first element. For each channel it instantiates ObjChannel, reads the record, and calls render_email("display") to produce the preview HTML inside a Bootstrap panel.
Returns an HTML string containing one panel per channel.
ObjChannel from factory.export.ObjChannel._Width.