Issue displaying search results - swift

Question

Essentially I have tableview with JSON data and a search controller for the user to quickly find values from the response. While the tableview data loads initially when attempting to search I get the error index out of range. The error occurs inside the cellForRowAt function. The following is what I am currently doing:
var sections = [customerListSection]()
var structure = [customerList]()
var searchsections = [customerListSection]()
var searchstruct = [customerList]()
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let section = sections[section]
let searchsection = searchsections[section]
if isFiltering() {
return searchsection.count
}
return section.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
let item = sections[indexPath.section].items[indexPath.row]
let customerList: customerList
if isFiltering() {
customerList = searchstruct[indexPath.row]
} else {
customerList = item
}
return cell
}
struct customerListSection {
let customerType : String
var items : [customerList]
}
struct customerList: Decodable {
let customerid: Int
let customer: String
let type: String
}

Answer 1

From your code, it seems that there are multiple sections, so you need to implement numberOfSections(in:)method.
If you do not implement this method, the table configures the table with one section.)
https://developer.apple.com/documentation/uikit/uitableviewdatasource/1614860-numberofsections
And since the number of rows is the number of items, not the number of sections, the tableView(_:numberOfRowsInSection:) method should return items.count.
The following is the modified code:
override func numberOfSections(in tableView: UITableView) -> Int {
if isFiltering() {
return searchsections.count
}
return sections.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isFiltering() {
return searchsections[section].items.count
}
return sections[section].items.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
let customerList: customerList
if isFiltering() {
customerList = searchsections[indexPath.section].items[indexPath.row]
} else {
customerList = sections[indexPath.section].items[indexPath.row]
}
cell.textLabel?.textAlignment = .left
cell.selectionStyle = .none
cell.textLabel?.font = .boldSystemFont(ofSize: 20)
cell.textLabel?.numberOfLines = 0
cell.textLabel?.lineBreakMode = .byWordWrapping
cell.textLabel!.text = customerList.customer
return cell
}