Background

The HtmlReport functionality takes an XHTML string, processes it adding data from a viewmodel and outputs the resulting XHTML.

XHTML is a strict version of HTML that is XML compatible. Most important is that it always have one, and only one, root node. Read more here https://en.wikipedia.org/wiki/XHTML

All the functionality of the HtmlReport functionality also applies to XML if you need that.

The HTML generating functions share most of it's code with the OpenDocument functionality. The OpenDocument format uses XML for storing the document content.

How it works

• Viewmodel that defines data to insert
• Template to insert data into

You create a viewmodel that extracts the data you need from your model. Each attribute in this viewmodel can replace one or more "tags" in the source template. Note that the viewmodel also defines where the template can be found.

Example of a viewmodel that extracts two attributes to be used, "String" and "Text".

Ways to retrieve the template

The templates is can be accessed in several different ways;

• From an String attribute in a modeled class
• From a BLOB attribute in a modeled class (base64 encoded)
• From an URL
• From the local filesystem

Attribute name	Attribute should evaluate to	Value type and content
TemplateHtml	A string that contains Html	Not encoded in any special way.
TemplateUrl	The URL or local filename	String with for example http://www.mdriven.net/templates/report.odt or for prototyping c:\\temp\\mytemplate.odt
TemplateBlob	A class attribute containing the template	Blob with an uploaded document template, value is expected to be Base64
ReportFileName	A string with a filename	Not used by XHtmlReportAsString but needed for opendocumentreportasblob

Methods

Depending on your input format, you can use either of these two functions;

ResultHtmlAsString := self.XHtmlReportAsString(ReportRoot.ViewModels.ReportingViewmodel)
ResultHtmlAsBlob := self.opendocumentreportasblob(ReportRoot.ViewModels.ReportingViewmodel)

• self here will become the root object of the reporting viewmodel.
• ReportRoot is the class
• Viewmodels is a method that retrieves all the viewmodels of the class. See ViewModels
• ReportingViewmodel is the name of the reporting viewmodel used in this example

XML documents

XML is just the more generic case of html. They are treated by the same logic. You can from 20190919 use any xml-tag as row builder. Example

 <SomeXml attrib='%SomeVMColumnAsAttributeresult%'>     %SomeOtherVMColumnAsXMLTextresult%   <Items>     <Item>%%+TheVMNestingColumn%       <ContentInItem someattrib='%VMColInNesting%'>          %StuffFromViewModelNesting%       </ContentInItem>     </Item>   </Items> </SomeXml> 

When creating OpenDocument documents, consider using the tag %meta% in your document to get the exact tag list for your document.

Copy the tag name including the percent signs from the generated meta tag information (preferable without style). The %meta% must be first string in element in order to be recognized - it is also case sensitive.