CODEWITHSUNDEEP
arraysswiftuitableviewdictionaryuisearchbar
user12669401
user12669401

Reputation: 249

How to get the value of an Array Index Within a Dictionary to Populate the Tableview

I have product tags stored in the the following variable: 

var productTags : [String : [String]] = [:]

I also have a search bar for my tableView where I populate the following variable based on what the user is searching for from the productTags: 

var searchResults: [String : [String]] = [:]

So the content of the these two variables would be something like this: 

productTags = [ product1 : [tag1, tag2, tag3, tag4],
                product2 : [tag1, tag2, tag3, tag4, tag 5], 
                product3 : [tag1, tag2, tag3]
              ] 
// similar for the searchResults depending on the search

Now I'd like to populate only the tag1 of each product into the tableView. How do I go about doing this?

func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    return //what should I be returning here? 
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: Identifiers.HomeSearchCell, for: indexPath) as! HomeSearchCell

    cell.productName?.text = //how can I populate the "tag1" of the product in here? so the label shows the tag1 as the search result

    return cell
}

I also want to make sure I can track which tag specifically the user is clicking on so I can track back the tag to the product ID. For example, if you search tag1 of product2 and then you see tag1 in the search result in the table view and click on it; how can I get the product ID which in this case is product2 from the row you selected on? 

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// what should I put here to get the productID of the tag/row selected by the user from the searchresults? 
    }

EDIT: This is how I populate my productTags:

db.collection(DatabaseRef.searchTags).document(DatabaseRef.productTags).getDocument { snapshot, error in

            guard error == nil, let snapshot = snapshot else {
                return
            }

            let data = snapshot.data()!

            for (key, _) in data {

                let productTags = data["\(key)"] as? [Any]

                if let maxIndex = productTags?.count {

                    for index in 0..<maxIndex {
                        if let tag = productTags![index] as? String, tag != "" {

                            if self.productTags[key] == nil {
                                self.productTags[key] = []
                                self.productTags[key]?.append(tag)
                            } else {
                                self.productTags[key]?.append(tag)
                            }
                        }
                    }

                }
            }
        }

and this is how I filter my productTags to populate the searchResults:

searchResults = productTags.filter({ (productTags) -> Bool in
            if let name = productTags.value as? [String] {
                for tag in name {
                    let isMatch = tag.localizedCaseInsensitiveContains(SearchText)
                    return isMatch
                }
            }
            return false
        })

Upvotes: 0

Views: 727

Answers (1)

Skyler Tanner
Skyler Tanner

Reputation: 136

TableViews work best when dealing with Arrays. If possible, I would turn the dictionary into an array of Dictionary<String:[String]>. So it would look something like this.

var productTags: [[String: [String]]] = [
    [product1: [tag1, tag2, tag3, tag4]],
    [product2 : [tag1, tag2, tag3, tag4, tag5]],
    [product3 : [tag1, tag2, tag3]]
]

Then from there you can return the number of product dictionaries in the array

        func tableView(_ tableView: UITableView, numberOfRowsInSection section: 
        Int) -> Int {

         return productTags.count 
    }

And from there you can access the productTagDictionaries by indexPath.row

 let productTags = productTags[indexPath.row].values.first
 cell.productName?.text = productTags?.first

Upvotes: 1

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