Generate Text/Html

This handler (com.rierino.handler.TemplateEventHandler) provides ability to produce text outputs using templates and input payload.

Handler Parameters

This cacheable.

Parameter	Definition	Example	Default
code.state	Name of the state manager with template definitions	template_code	handler_code
code.field	Json path for the data element of code record for template	template	code
helper	Class name for the template helper to use	com.rierino.handler.util.helper.HandlebarsTemplateHelper	-

387B

handler-handlebars-0001.json

Example Template Handler Definition (Can be Imported on Element Screen)

This handler requires the following dependency added to deployment contents:

implementation (group:'com.rierino.processors', name: 'handlebars', version:"${rierinoVersion}")

Actions

ApplyTemplate

Produces text (e.g. plain, html) from given input data and template id. Event metadata fields applicable for this action are as follows:

Field	Definition	Example	Default
inputElement	Json path for the input in request event payload	customer	-
outputElement	Json path for the output in response event payload	html	-

With event metadata parameters as:

Parameter	Definition	Example	Default
templateId	Id of the template to use from code.state	landing_page	-
templateIdPath	Json path of the template in event payload	parameters.template	-
resultPath	Json path to add produced text on output element	output	result

Example

Input

{
    "parameters": {
        "course": "Rierino 101",
        "chapters": [
            {"name": "Introduction"}
        ] 
    }
}

Event Metadata

ApplyTemplateList

Produces text from a given array of input data and template ids. Event metadata fields applicable for this action are as follows:

Field	Definition	Example	Default
inputElement	Json path for the input in request event payload	list	-
outputElement	Json path for the output in response event payload	html	-

With event metadata parameters as:

Parameter	Definition	Example	Default
structure	Structure of output to produce (, , )	map	-
delimiter	Delimiter for concatenating results if structure is "text"	\n	-
inputPath	Json path to get list of requests from	list	input
resultPath	Json path to add produced text on output element	output	result

Helpers

HandlebarsTemplateHelper

This helper (com.rierino.handler.util.helper.HandlebarsTemplateHelper) uses Handlebars library for processing given template.

Example Template

<header><h1>{{course}}</h1></header>
{{#each chapters}}
    <h2>{{name}}</h2>
    {{#each sections}}
        <h3>{{name}}</h3>
    {{/each}}
{{/each}}

FreemarkerTemplateHelper

This helper (com.rierino.handler.util.helper.FreemarkerTemplateHelper) uses Freemarker library for processing given template.