Link to graffiti.eliom is incorrect + some functions are outdated + eliom programs migration

[MdeLv]

1/ graffiti tutorial In http://ocsigen.org/tuto/6.4/manual/application.html the link to graffiti.eliom is https://github.com/ocsigen/graffiti/tree/master/simple is incorrect (old Eliom and Cairo API, etc.). The ppx branch must be merged to master to solve that. Or, at least, link to https://github.com/ocsigen/graffiti/tree/ppx/simple

Of what 6.4 is the version? (tutorial ?)

2/ outdated functions in graffiti.eliom Concerning the code, some slight API changes (in Cairo, Tyxml) can be easily fixed.

Can you indicate how to fix the following one?

let slider =
Html.D.Form.input
~a:[
Html.D.a_id "slider";
Html.D.a_input_min 1.;
Html.D.a_input_max 80.
]
~input_type:`Range
Html.D.Form.int

$ make test.byte
...
xxx |       Html.D.a_input_min 1.;
                               ^^
Error: This expression has type float but an expression was expected of type
         Html_types.number_or_datetime Eliom_content.Html.D.wrap
make: *** [Makefile:158: _server/graffiti2.type_mli] Error 2

Can you also have a look at the rest of the code or give some indications about how to fix old functions with recent Eliom 6.12.0, Tyxml 4.4.0, Js_of_ocaml 3.6.0 modules?

graffiti/simple/graffiti.eliom has been updated quite recently (June 2019) and the tutorial claims that it has been tested against eliom 6.7.1 package. First, there is no 6.7.1 but a 6.7.0 eliom package version (Feb 8, 2019). See https://github.com/ocsigen/eliom/releases . As a side question, can you check against which version the tutorial has been checked?

3/ more importantly Can you indicate how to upgrade from one version to another version of a function (from Eliom, Tyxml, or JS_of_ocaml modules )? Where is filed the history of each type and function (AKA as value)?

The aforementioned compilation error indicates that from a simple type float, eliom is now dealing with a more complex type Html_types.number_or_datetime Eliom_content.Html.D.wrap

As it is a global ocsigen issue/requirement, I open a dedicated issue in ocsigen-start.

Thanks.

[MdeLv]

Is graffiti tutorial no more maintained?

[balat]

I just saw your messages. I will subscribe to notifications here. I think some of your issues are already solved. We will have a look at your comments and update the tutorial. Thanks!