How can we add new filters for pongo2

Question

How can we add new filters for pongo2

jjude opened this issue 6 years ago · 4 comments

I am using pongo2 renderer. It works fine. Now I want to add new filters to pongo2. Can it be done with the default middleware? Any examples?

Thanks

Answer 1 · 2019-03-20T20:15:17.000Z

Hi, what "filters" do you mean?

Answer 2 · 2019-03-21T03:07:40.000Z

Pongo2 comes with its own filters like 'slugify', 'date' etc. I want to add my own filters to it, say 'datefromstring'.

If I was importing pongo2 on my own without using the macaron renderer, then I could do with pongo2.RegisterFilter. But I am using the pongo2 renderer (m.Use(pongo2.Pongoer())). In this case, how to get an instance of pongo2 so that I can call RegisterFilter on it?

One possibility is to have additional option (like templateFunc) in macaron.RenderOptions. Another is to expose a pongo2 instance with which we could register new filters. Funcs is available for regular golang renderer. Same should be available for pongo2 too.

Answer 3 · 2019-03-21T03:50:12.000Z

In fact, you only need to give it like any other the template variables: https://sourcegraph.com/github.com/Unknwon/gowalker@5ef7245ad7005740ffc75d23a2deefab8c7cb32f/-/blob/pkg/context/context.go#L109

Answer 4 · 2019-03-22T06:36:51.000Z

Got it. Thank you.