Swift

Find and Delete Object from JSON Array

See more JSON Examples

Demonstrates how to find an delete an object from a JSON array of objects. Swift

func chilkatTest() {
    var success: Bool = false

    // This example will delete the "Pasta" category object from Menu B.

    // {
    //   "menus": [
    //     {
    //       "name": "Menu A",
    //       "categories": [
    // 			{
    // 			"name": "Kebabs",
    // 			"description": "blah blah blah"
    // 			},
    // 			{
    // 			"name": "Burgers",
    // 			"description": "blah blah blah"
    // 			},
    // 			{
    // 			"name": "Pasta",
    // 			"description": "blah blah blah"
    // 			},
    // 			{
    // 			"name": "Appetizers",
    // 			"description": "blah blah blah"
    // 			}
    // 		]
    // 	},
    //     {
    //       "name": "Menu B",
    //       "categories": [
    // 			{
    // 			"name": "Kebabs",
    // 			"description": "blah blah blah"
    // 			},
    // 			{
    // 			"name": "Burgers",
    // 			"description": "blah blah blah"
    // 			},
    // 			{
    // 			"name": "Pasta",
    // 			"description": "blah blah blah"
    // 			},
    // 			{
    // 			"name": "Appetizers",
    // 			"description": "blah blah blah"
    // 			}
    // 		]
    // 	  }
    // 	]
    // }

    let json = CkoJsonObject()!
    success = json.loadFile(path: "qa_data/json/menus.json")
    if success == false {
        print("\(json.lastErrorText!)")
        return
    }

    // Find Menu B.
    var menu: CkoJsonObject? = json.findRecord(arrayPath: "menus", relPath: "name", value: "Menu B", caseSensitive: true)
    // assume menu is found..

    // Get the categories array, and then find the index of the "Pasta" menu category.
    var catArr: CkoJsonArray? = menu!.array(of: "categories")
    // Assume it is found..

    // Find the object where the name of the JSON member is "name", and the value is "Pasta"
    var index: Int = catArr!.find(name: "name", value: "Pasta", caseSensitive: true).intValue
    if index < 0 {
        print("Pasta not found.")
    }
    else {

        // Delete the "Pasta" category record from Menu B
        success = catArr!.delete(at: index)
        // Assume OK..
    }

    // Examine the JSON to see if it worked as expected..
    json.emitCompact = false
    print("\(json.emit()!)")

    catArr = nil
    menu = nil

}