Swift：如何更新行

Question

In the code below is the code that I used to save the data in JSON whenever any change is made but the problem is that I want to save only that field that is edited and not all fields.
ps: I have use Eureka Forms.

Answer 1

One way to do it is to store a set of rows that are edited.

var editedRowTags: Set<String>()

In the onChange callback of each row, add the row's tag into the set:

editedRowTags.insert(row.tag!)

In the save button's IBAction , loop through the set and get the rows using the tags, then addRequest the values.

for tag in editedRowTags {
    let row = form.rowBy(tag: tag)
    requestsArray.addRequest(withValue: row.baseValue!, forFieldName: tag)
}