openHAB 4.0 wishlist

Mark_VG · December 23, 2022, 3:59pm

My wish would be that a default value could be assigned to vars in widgets as per

[webui]Extend props. default value to vars.

opened 05:09PM - 22 Aug 22 UTC

enhancement main ui

As discussed in https://community.openhab.org/t/oh3-widget-vars-default-value/13…8318 it is currently not possible to set a default value for a variable in an OH3 widget. Being able to do so would simplify many widgets and remove the need to manually protect against undefined variable son each and every expression. The props. default value issue was resolved in https://github.com/openhab/openhab-webui/pull/1049/commits/cf7cfd9e5b7d2156f1b55c2c0f67698dade6e00f and it would be great is this could be extended to cater for variables as well. The following widget code does not work, as the var. default value is not working: ``` uid: demo:default_vars tags: [] props: parameters: - default: This is a default value description: A text prop label: Prop 1 name: prop1 required: false type: TEXT parameterGroups: [] timestamp: Aug 22, 2022, 5:38:10 PM component: f7-card config: title: =(vars.prop1 || 'No Default Value Set') ``` The following is the result: ![image](https://user-images.githubusercontent.com/84638697/185978525-68e6fe77-ed76-4dd3-9d9f-4dc854c6934e.png) However when using props. as follows: ``` uid: demo:default_vars tags: [] props: parameters: - default: This is a default value description: A text prop label: Prop 1 name: prop1 required: false type: TEXT parameterGroups: [] timestamp: Aug 22, 2022, 5:38:10 PM component: f7-card config: title: =(props.prop1 || 'No Default Value Set') ``` the default value is used and results as follows: ![image](https://user-images.githubusercontent.com/84638697/185979033-73858538-e45c-44fd-b2ac-6848f00bc386.png) In my widget I use many vars. expressions as they are carried across to other expressions etc and are changed in the widget, which it appears is not supported with props. It would be useful to many if the default value could be extended to variables as well as the current props.