swift - How to pass the same parameter multiple times in CoreData iOS predicate builder? -


i have uitableview uisearchbar let me filter data based on search text uisearchbar.

the coredata table contains 3 attributes

name, notes, date

i want search 3 columns occurrence based on user search text.

so tried on:

let searchtext = searchtext.lowercased() let query = "name contains[cd] %@ or notes contains[cd] %@ or date contains[cd] %@" let predicate = nspredicate(format: query, searchtext, searchtext, searchtext)

is there way pass same parameter (searchtext) 1 time?

something java string formatter:

let query = "name contains[cd] %1$@ or notes contains[cd] %1$@ or date contains[cd] %1$@" let predicate = nspredicate(format: query, searchtext)

you can use substitution variables:

let searchtext = searchtext.lowercased() let template = nspredicate(format: "name contains[cd] $srch or notes contains[cd] $srch or date contains[cd] $srch") let subvars = ["srch": searchtext] let predicate = template.withsubstitutionvariables(subvars)

see "creating predicates using predicate templates" in apple documentation.


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