Archive Trac demo app module

Demo App Module

Legacy Trac archive page imported from demo_app_module. Source: https://genapp.rocks/wiki/wiki/demo_app_module. Review age, links, and examples before treating as current.

3. Demo GenApp Application

d. Modifying Demo Application

Modifying the Module

• Edit {{{modules/penergy.json}}} file (with common editors like emacs, vi, nano, pico) and change one of the labels
  • EXAMPLE: let's modify the label for the mass input:

     {
            "role"       : "input"
            ,"id"         : "m"
            ,"label"      : "mass [kg]"                   <--- CHANGE from "mass [kg]" to "Mass in [kg]"
            ,"type"       : "float"
            ,"required"   : "true"
            ,"help"       : "Enter the mass in kilograms"
      }

- Note: It is recommended to run {{{check_json.pl}}} on the modified JSON file to make sure there are no syntax errors

check_json.pl penergy.json

• Regenerate application
  • change to the base directory ({{{[path_to_the/demo]}}})
  • run "genapp" (type {{{genapp}}} and press enter in the command line)
• take a look at the web-site
  • Note: web browser will cache, so you may need to clear the cache

http://your-ip-address/demo

- Press "Simulate" on the left, then press "Energy" button. See the difference:

![demo_site_mass_labels.png](https://genapp.rocks/wiki/raw-attachment/wiki/demo_app_module/demo_site_mass_labels.png) 

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