How to hide some Fields in Form?

[deim31]

I tried to figure out how to hide some field that I wanna prefill - like
references.
I tried to add writable=False

Field('user_id', 'reference auth_user', writable=False),

And it worked but until I recreated db. After that it stop to work (OR
it didn't worked before and I didn't notice?)

In web2py there was fields= in SQLForm which selected which fields to
display.

What approach is in py4web for this?

Thanks, Shawn

[Jim Steil]

In py4web the Form init takes a hidden parameter that will create the field but hide it in the form.

But, setting readable and writable in your controller function should work.  I just tried it and it worked for me.

-Jim

[deim31]

Hi Jim, thanks for answer but:

when I set writable and readable in models.py or controllers.py it is hidden indeed but even I set:

    user = auth.get_user()
    form = Form(db.main)
    db.main.creator_id.writable = False
    db.main.creator_id.readable = False
    form.vars["creator_id"] = user['id']
    if form.accepted:
        redirect(URL("index"))

it saves null to DB to creator_id field. Maybe bad approach but I don't know how to set it correctly at the moment.

AFAIK hidden parameter adds hidden fields to form but I wanna hide and set some fields from db.

Thanks, Shawn

Dne 16. 10. 20 v 21:27 Jim Steil napsal(a):

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[Jim Steil]

I just tried passing hidden fields to my form but am having some issues.  I think hidden fields will be updated (not positive).

I'll try to get time today to check it out.

-Jim

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[Massimo DiPierro]

If one needs to pass data through a form and if that data is not to go into the database, then the proper way is using hidden fields but make sure the names do not conflict with with a “writable=True” field in the table.

For security I recommend passing a signed JWT token into a hidden field.

Massimo

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[deim31]

Thanks Massimo,

but my situation:
I need to save field to db (the field is defined in models) but hide field from user and set it in controller.

I see no way at the moment.
Thanks, Shawn

Dne 19. 10. 20 v 17:05 Massimo DiPierro napsal(a):

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[Jacinto Parga]

Simple solution (like SQLFORM.factory in web2py): 

user = auth.get_user()

form = Form(

Field('my_field_1),

Field('other_fields),

...

)
    if form.accepted:

        db.main.insert("creator_id"=user["id"], "my_field_1"=form.vars.my_field_1, "other_fields"=form.vars.other_fields)

        redirect(URL("index"))

Massimo

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