DOC-6967 Add Ruby (redis-rb) hash field expiration examples

content/develop/data-types/hashes.md

@@ -162,7 +162,7 @@ it runs on its own.
 Set a TTL of 60 seconds for two fields of a hash and then retrieve the remaining TTL for
 those fields:
 
-{{< clients-example set="hash_tutorial" step="hexpire" lang_filter="Python, Node.js, Java-Sync, Java-Async, Java-Reactive, Go, C#-Sync (SE.Redis), PHP, Rust-Sync, Rust-Async" description="Field expiration: Set a TTL in seconds on individual hash fields using HEXPIRE, then read the remaining TTL with HTTL" difficulty="intermediate" buildsUpon="set_get_all" >}}
+{{< clients-example set="hash_tutorial" step="hexpire" description="Field expiration: Set a TTL in seconds on individual hash fields using HEXPIRE, then read the remaining TTL with HTTL" difficulty="intermediate" buildsUpon="set_get_all" >}}
 > DEL sensor:sensor1
 (integer) 0
 > HSET sensor:sensor1 air_quality 256 battery_level 89
@@ -177,7 +177,7 @@ those fields:
 
 Set a hash field's TTL in milliseconds and then retrieve the remaining TTL in milliseconds:
 
-{{< clients-example set="hash_tutorial" step="hpexpire" lang_filter="Python, Node.js, Java-Sync, Java-Async, Java-Reactive, Go, C#-Sync (SE.Redis), PHP, Rust-Sync, Rust-Async" description="Field expiration: Set a TTL in milliseconds on a hash field using HPEXPIRE, then read the remaining TTL with HPTTL" difficulty="intermediate" buildsUpon="set_get_all" >}}
+{{< clients-example set="hash_tutorial" step="hpexpire" description="Field expiration: Set a TTL in milliseconds on a hash field using HPEXPIRE, then read the remaining TTL with HPTTL" difficulty="intermediate" buildsUpon="set_get_all" >}}
 > DEL sensor:sensor1
 (integer) 1
 > HSET sensor:sensor1 air_quality 256 battery_level 89

local_examples/ruby/dt_hash.rb

@@ -10,7 +10,7 @@ def assert_equal(expected, actual)
   raise "Expected #{expected.inspect}, got #{actual.inspect}" unless actual == expected
 end
 
-r.del('bike:1', 'bike:1:stats')
+r.del('bike:1', 'bike:1:stats', 'sensor:sensor1')
 # REMOVE_END
 
 # STEP_START set_get_all
@@ -116,5 +116,44 @@ def assert_equal(expected, actual)
 assert_equal(1, res12)
 assert_equal('3', res13)
 assert_equal(['1', '1'], res14)
+# REMOVE_END
+
+# STEP_START hexpire
+r.del('sensor:sensor1')
+r.hset('sensor:sensor1', { 'air_quality' => 256, 'battery_level' => 89 })
+
+# Set a TTL of 60 seconds on two fields of the hash.
+res15 = r.hexpire('sensor:sensor1', 60, 'air_quality', 'battery_level')
+puts res15.inspect # >>> [1, 1]
+
+# Retrieve the remaining TTL for those fields.
+res16 = r.httl('sensor:sensor1', 'air_quality', 'battery_level')
+puts res16.inspect # >>> [60, 60]
+# (your actual values may be slightly lower)
+# STEP_END
+
+# REMOVE_START
+assert_equal([1, 1], res15)
+raise "Unexpected TTLs: #{res16.inspect}" unless res16.all? { |ttl| ttl.positive? && ttl <= 60 }
+# REMOVE_END
+
+# STEP_START hpexpire
+r.del('sensor:sensor1')
+r.hset('sensor:sensor1', { 'air_quality' => 256, 'battery_level' => 89 })
+
+# Set the TTL of the 'air_quality' field in milliseconds.
+res17 = r.hpexpire('sensor:sensor1', 60_000, 'air_quality')
+puts res17.inspect # >>> [1]
+
+# Retrieve the remaining TTL in milliseconds.
+res18 = r.hpttl('sensor:sensor1', 'air_quality')
+puts res18.inspect # >>> [59999]
+# (your actual value may vary)
+# STEP_END
+
+# REMOVE_START
+assert_equal([1], res17)
+raise "Unexpected TTL: #{res18.inspect}" unless res18.all? { |pttl| pttl.positive? && pttl <= 60_000 }
+r.del('bike:1', 'bike:1:stats', 'sensor:sensor1')
 r.close
 # REMOVE_END