Query a Firestore collection with an in array filter (async)
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Query a Firestore collection with an in array filter (async).
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For detailed documentation that includes this code sample, see the following:
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[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis content demonstrates how to query a Firestore collection using an "in" array filter in Python.\u003c/p\u003e\n"],["\u003cp\u003eThe code sample provided shows the necessary steps to filter a "cities" collection where the "regions" field contains either "west_coast" or "east_coast".\u003c/p\u003e\n"],["\u003cp\u003eAuthentication to Firestore is required and can be achieved using Application Default Credentials.\u003c/p\u003e\n"],["\u003cp\u003eMore examples of Firestore query can be found in the provided "Perform simple and compound queries in Cloud Firestore" and "Query and filter data" documentation.\u003c/p\u003e\n"]]],[],null,["# Query a Firestore collection with an in array filter (async).\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Perform simple and compound queries in Cloud Firestore](https://firebase.google.com/docs/firestore/query-data/queries)\n- [Query and filter data](/firestore/native/docs/query-data/queries)\n\nCode sample\n-----------\n\n### Python\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n cities_ref = db.collection(\"cities\")\n\n query = cities_ref.where(\n filter=FieldFilter(\"regions\", \"in\", [[\"west_coast\"], [\"east_coast\"]])\n )\n return query\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=firestore)."]]
