UISearchController search for struct array inside a Struct

Question

I have 2 structs which takes, in a list of Courses.

struct Course : Decodable {
let CourseName : String;
let EntryRequirements : String;
}

struct  WebsiteDescription : Decodable {
let FullProgramName :String
let ProgramName : String;
let Courses : [Course]
}

These structs are loaded with JSON

I've implemented a UISearchController to actually Search through the Course Name.

I have no idea how to reference to the Struct Course from within the WebsiteDescription which contains the course names.

Arrays that I had used to contain the WebsiteDescription

  var allCourses = [WebsiteDescription]()
  var filteredCourses = [WebsiteDescription]()

I have tried to filter it with this method

func updateSearchResults(for searchController: UISearchController) {
    if searchController.searchBar.text! == "" {
        filteredCourses = allCourses
        acTableView.reloadData()
    } else {
        filteredCourses = allCourses.filter { $0.ProgramName.lowercased().contains(searchController.searchBar.text!.lowercased()) }



    }  
    self.acTableView.reloadData();
}

It filters the general programme name, but I would actually want to filter using the CourseName in the struct Course.

Thank you in advance.

This is what I currently get

When I search for mentoring, the whole section of ShortCourses Appears when only 'Mentoring' should appear.

Mentoring is the Course Name

is allCourses array of WebsiteDescription ?

adarshaU
– adarshaU

2017-12-21 05:47:54 +00:00
Commented Dec 21, 2017 at 5:47 — adarshaU
– adarshaU, Commented Dec 21, 2017 at 5:47
yes, it is an array of WebsiteDescription

ybba
– ybba

2017-12-21 05:48:26 +00:00
Commented Dec 21, 2017 at 5:48 — ybba
– ybba, Commented Dec 21, 2017 at 5:48

Arun Kumar · Accepted Answer · 2017-12-21 07:36:46Z

1

Replace this line

allCourses.filter { $0.ProgramName.lowercased().contains(searchController.searchBar.text!.lowercased())

with this

allCourses.filter {
             !$0.Courses.filter{$0.CourseName.localizedCaseInsensitiveContains(searchController.searchBar.text!)}.isEmpty
        }

It will give the result according to your CourseName in the struct Course.

EDIT : It will give you Array of Course

allCourses.flatMap{$0.Courses.filter{$0.CourseName.localizedCaseInsensitiveContains(searchController.searchBar.text!)}}

edited Dec 21, 2017 at 7:36

answered Dec 21, 2017 at 5:59

Arun Kumar

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7 Comments

ybba Over a year ago

Hi! It works now but it returns the entire section, how do I only show the Course Name?

Arun Kumar Over a year ago

Okay. Do you want [Course] or [CourseName] as a result?

ybba Over a year ago

Course Name, please

ybba Over a year ago

There was an error encountered 'flatMap' produces '[String]', not the expected contextual result type '[WebsiteDescription]'

Arun Kumar Over a year ago

Exactly. This is an array for string , which is course name , as per you asked. not the array of WebsiteDescription. Can you show me pictorial representation, what you really want?

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