docs/api/rendering/

[utterances-bot]

Rendering | SquirrellyJS

Rendering a template compiles a template and then calls it with the data you pass to it.

https://squirrelly.js.org/docs/api/rendering

[ValentinKostiuk]

Hi Squirrelly team,

Is there any setting or other API which can allow to ignore undefined properties in model?
For example callback to which undefined property name will be passed and replacement value will be returned.
I need to continue rendering template even when some properties in model are not found, better replacing with some defaults.

[nebrelbug]

@ValentinKostiuk you should be able to define a default filter.

[ValentinKostiuk]

@nebrelbug, Thank you for your response! Appreciate your time.
yep I did. Issue here is that:
Filter does not receive name of field as an argument (which could be useful)
Even if filter defined this approach works only for one level of "undefinedness" for example works for {{it.a}} but not for {{it.a.b}}. In the latest example it will fail with error "Cannot read properties of undefined (reading 'b')".

For now I've figured out tactics to parse template to AST (very useful API) find out which fields are absent in model and replace them with required defaults in model. Hope it'll work.

[nebrelbug]

@ValentinKostiuk sounds like it could be a cool plugin!