Create find-key-value.md

rohitcoder · web-flow · commit a27a0c840d3e · 2025-01-07T17:43:42.000+05:30
diff --git a/website/catalog/yaml/find-key-value.md b/website/catalog/yaml/find-key-value.md
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+## Find key/value and show message using those key/vals
+
+* [Playground Link](/ast-grep.github.io/playground.html#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")
+
+### Description
+
+This YAML rule helps detect specific host and port configurations in your code. For example, it checks if the port is set to something other than 8000 or if a particular host is used. It provides an error message prompting you to update the configuration.
+
+### YAML
+
+```yaml
+id: detect-host-port
+message: You are using $HOST on Port $PORT, please change it to 8000
+severity: error
+rule:
+  any:
+    - pattern: |
+        port: $PORT
+    - pattern: |
+        host: $HOST
+```
+
+### Example
+
+<!-- highlight matched code in curly-brace {lineNum} -->
+```yaml
+db:
+  username: root
+  password: root
+
+server:
+  host: 127.0.0.1
+  port: 8001
+
+```
+
+### Contributed by
+[rohitcoder](https://twitter.com/rohitcoder) on [Discord](https://discord.com/invite/4YZjf6htSQ).
