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opCharts HTML widgets is a way to define templates which opCharts can render and present to the user.

Prerequisites

• opCharts version >= 4.0.9
• You will need system administration privileges so you can create the required files in the /usr/local/omk directory.

How to

1. Create a new template file and have its prefix .html.ep in <omk_dir>/templates/public/. 
2. Define any arbitrary HTML inside the template as you see fit, mojolicious templates are also supported, see more on rendering mojolicious templates at https://mojolicious.org/perldoc/Mojo/Template

3. Create an opCharts component to tell the dashboard it can render this new file. For this, create a new json file in /usr/local/omk/lib/json/opCharts/components.d/: Example: acme_component.json 

   Code Block
   { "name": "What the component is called in the dashboards dropdown list", "ep_template_file": "The loccation of the template file", "options": { "titleText": "the component display name" }, "type": "ep_template" }

   
   

4. Restart the omkd daemon. Please note that omkd daemon should be restarted after any change. 

Examples

acme_component

1. Create <omk_dir>/templates/public/acme_list.html.ep
2. Add the html content.

3. Create <omk_dir>/lib/json/opCharts/components.d/acme_component.json 

   Code Block
   language js title acme_component.json
   { "name": "Acme Component", "ep_template_file": "public/acme_list", "options": { "titleText": "My Title" }, "type": "ep_template" }

   
   

4. Restart omkd daemon:

   Code Block
   language js title acme_component.json
   sudo service omkd restart

   
   

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