I am creating a new Node-RED node that requires a date using a yyyymmdd format. Has anyone created a node that implements a property validation function on date formatting? I want to filter out or rewrite "yyyy-mm-dd" or "yyyy/mm/dd" as yyyymmdd All I have now is: defaults: { date: {…

Hi @johnwalicki the validator can only be used to check if it is valid - it can't do any rewriting. You'd have to implement that part yourself. I'd use a regex validator for this - as you need to ensure its a certain length. Something like: validate:RED.validators.regex(/^\d{8}/) That would do a…

Thanks Nick - Your validate function snippet is very useful and makes the node more robust in handling bad input. I've incorporated it into my new node-red-contrib node. defaults: { date: { value:0, required:true, validate: function(v) { if (!/^\d{8}/.test(v)) { return false; …

If you wanted to be kinder to your users, it would also be easy to implement a re-write function upon user input. The Editor gets access to jQuery and you can attach a function of the on-blur or on-change events, check the format on the fly and re-write the input.

I included this enhancement in the recently released node-red-contrib-twc-weather nodes. The node will accept yyyymmdd, yyyy/mm/dd, yyyy-mm-dd or a timestamp. That allows you to use the Node-RED Dashboard date picker to select a date in the past and get the weather history.

The node-red-contrib-sun-position node has a time compare and change node which is designed for time formatting. [image] or [image]

Node property validation function for date formatting

Developing Nodes

johnwalicki 16 January 2020 17:20 5

Great idea - will add this to the todo list. Want to publish the first iteration of the node-red-contrib-twc-weather then circle back to enhancements.

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Node property validation function for date formatting

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