问题
I am porting an app over from Parse to Firebase and I used to be able to query using matchesRegex and putting the search into "(?i)\(searchBar.text!)". By doing this, the user could search "p" and the database would return (for example) "person", "People", "pot", etc.
I can't seem to find a way to query like this using Firebase that allows a user to search part of a String and Firebase looks for the substring within the database.
I am using:
databaseReference.child("Schools").queryOrderedByKey().queryEqualToValue("(?i)\(searchBar.text!)").observeSingleEventOfType(.Value, withBlock: { (snapshot) in
for childSnapshot in snapshot.children {
print("SANP \(childSnapshot)")
}
}) { (error) in
print(error)
}
If I do this, nothing is printed. I know the code above works if I search for a specific value that is character-for-character the same as it is in the database.
How can I search using parts of a String within the Firebase database?
来源：https://stackoverflow.com/questions/39606627/firebase-app-search-feature-query-using-string-regex