CODEWITHSUNDEEP
swiftfirebasegoogle-cloud-firestore
mnearents
mnearents

Reputation: 676

How to query Firestore for value in array

Per Firebase Firestore docs, in order to query a collection where an array contains a certain value, you'd do this:

citiesRef.whereField("regions", arrayContains: "west_coast")

Only when I try to write that in Swift 4, I get the following error:

Argument labels '(_:, arrayContains:)' do not match any available overloads

Looking at the available overloads yields the following:

Query whereField(field: String, isEqualTo: Any)
Query whereField(path: FieldPath, isEqualTo: Any)
Query whereField(field: String, isLessThan: Any)
Query whereField(path: FieldPath, isLessThan: Any)
Query whereField(field: String, isGreaterThan: Any)
Query whereField(path: FieldPath, isGreaterThan: Any)
Query whereField(field: String, isLessThanOrEqualTo: Any)
Query whereField(path: FieldPath, isLessThanOrEqualTo: Any)
Query whereField(field: String, isGreaterThanOrEqualTo: Any)
Query whereField(path: FieldPath, isGreaterThanOrEqualTo: Any)

Nothing in there about arrays or contains. Are the docs out of date? What am I missing? Docs found here

My Podfile:

 platform :ios, '9.0'

target 'Appname' do
use_frameworks!

# Pods for Appname

pod ‘Firebase/Core’
pod ‘Firebase/Auth’
pod 'Firebase/Database'
pod 'Firebase/Firestore'
pod 'Firebase/Storage'
pod 'Firebase/Invites'
pod 'SwiftGifOrigin', '~> 1.6'
pod 'Kingfisher', '~> 4.0'
pod 'AudioKit', '~> 4.0'
pod 'KSTokenView', '~> 4.0'
pod 'ReachabilitySwift'
pod 'ZFTokenField'
pod 'SlackTextViewController'
pod 'RealmSwift'

target 'AppnameTests' do
 inherit! :search_paths
 # Pods for testing
end

target 'AppnameUITests' do
 inherit! :search_paths
 # Pods for testing
end

end

Upvotes: 0

Views: 1447

Answers (1)

Doug Stevenson
Doug Stevenson

Reputation: 317968

arrayContains support was released in 5.5.0 of the Firestore pod. Make sure you are using that version or later. Read the release notes here.

Upvotes: 3

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