SOLVED: Remap array to get an sectioned list

@arroyot24

May '23

I have been having problems with my sectionedFetchRequests on my CoreData app, so I'm now trying to reconstruct them not using this option, but "remaping" data array for my lists myself, using .map option as explained by Paul: https://www.hackingwithswift.com/example-code/language/how-to-use-map-to-transform-an-array

But for my sectioned list purposes, I need to rebuild my "Rehearsals" array into another "SectionedRehearsals" one, this way:

struct SectionedRehearsals: identifiable {
   let id: UUID()
   let title: String
   let rehearsals: [Rehearsal]
}

All of my "Rehearsals" have an "month" property, wich is the one I need data to be grouped by. But event studying this post: https://stackoverflow.com/questions/58574847/how-to-dynamically-create-sections-in-a-swiftui-list-foreach-and-avoid-unable-tI don't find the correct sintax to .map the original array to this one, in order to later create a nested ForEach to build this sectioned list.

Any help about this, please? Thanks in advance.

@TazmanCoder

May '23

Without seeing more of your code its hard to give help. However, in my app I sectioned out my programs based on statusText field, which is either "Completed" or "Scheduled". Here is the code I used whiched uses a Dictionary to group on. I hope this will help ya.

func sectionedProgramData(searchTerm: String, byNameDateType: Int) -> [[Program]] {
        var filteredPrograms: [Program]

        // Filter the list of programs
        filteredPrograms = programs.filter {
            searchTerm.appearsIn($0.name) || searchTerm.appearsIn($0.monthYear)
        }

        // Create a sectioned array of programs
        let dictionaryByStatus = Dictionary(grouping: filteredPrograms, by: { $0.statusText })
        if byNameDateType == 0 {
            // Sort by name
            return [dictionaryByStatus["Scheduled"]?.sorted(by: { $0.name < $1.name }), dictionaryByStatus["Completed"]?.sorted(by: { $0.name < $1.name })].compactMap({ $0 })
        } else if byNameDateType == 1 {
            // Sort by date
            return [dictionaryByStatus["Scheduled"]?.sorted(by: { $0.date < $1.date }), dictionaryByStatus["Completed"]?.sorted(by: { $0.date < $1.date })].compactMap({ $0 })
        } else {
            // Sort by program type
            return [dictionaryByStatus["Scheduled"]?.sorted(by: { $0.date < $1.date }), dictionaryByStatus["Completed"]?.sorted(by: { $0.type < $1.type })].compactMap({ $0 })
        }
    }

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