Friends,
I don't know if it's the best way, but this solved my problem:
In controller:
def create_tabela_preco():
form = crud.create(db.pampa_tabelapreco, next=URL(r = request,f =
'tabelas_preco'), onvalidation=valida_tabela_preco, message=T("Record
Created !"))
return dict(form=form)
def valida_tabela_preco(form):
categoria_cliente = form.vars['categoria']
produto = form.vars['produto']
query = (db.pampa_tabelapreco.categoria==categoria_cliente)&
(db.pampa_tabelapreco.produto==produto)
rows = db(query).select(db.pampa_tabelapreco)
if rows:
form.errors = "Ja existe um preco com essa categoria de cliente
e
este produto !"
return form
In html:
{{if form.errors:}}
<div style="background-color: yellow; color:
red;">{{=form.errors}}</
div>
{{pass}}
{{=form}}
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