Query Firestore by UserID and date range?












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I need to query Firestore, but it keeps telling me I need an index. Problem is that isn't realistic, since EVERY user would require a custom index based on their UserId. For security, I can't allow anyone access unless canAccess.${userID} == true as in the example below. But if I were to take ALL items, and filter them by date client-side I would be fetching hundreds of thousands of items every time I change the date range, so it isn't practical.



this.db.collection('items')
.where(`canAccess.${userId}`, '==', true)
.where('date', '>=', startDate)
.where('date', '<=', endDate);


How would one going about fetching only the items they are allowed to access, and only between the chosen date range?










share|improve this question





























    0















    I need to query Firestore, but it keeps telling me I need an index. Problem is that isn't realistic, since EVERY user would require a custom index based on their UserId. For security, I can't allow anyone access unless canAccess.${userID} == true as in the example below. But if I were to take ALL items, and filter them by date client-side I would be fetching hundreds of thousands of items every time I change the date range, so it isn't practical.



    this.db.collection('items')
    .where(`canAccess.${userId}`, '==', true)
    .where('date', '>=', startDate)
    .where('date', '<=', endDate);


    How would one going about fetching only the items they are allowed to access, and only between the chosen date range?










    share|improve this question



























      0












      0








      0








      I need to query Firestore, but it keeps telling me I need an index. Problem is that isn't realistic, since EVERY user would require a custom index based on their UserId. For security, I can't allow anyone access unless canAccess.${userID} == true as in the example below. But if I were to take ALL items, and filter them by date client-side I would be fetching hundreds of thousands of items every time I change the date range, so it isn't practical.



      this.db.collection('items')
      .where(`canAccess.${userId}`, '==', true)
      .where('date', '>=', startDate)
      .where('date', '<=', endDate);


      How would one going about fetching only the items they are allowed to access, and only between the chosen date range?










      share|improve this question
















      I need to query Firestore, but it keeps telling me I need an index. Problem is that isn't realistic, since EVERY user would require a custom index based on their UserId. For security, I can't allow anyone access unless canAccess.${userID} == true as in the example below. But if I were to take ALL items, and filter them by date client-side I would be fetching hundreds of thousands of items every time I change the date range, so it isn't practical.



      this.db.collection('items')
      .where(`canAccess.${userId}`, '==', true)
      .where('date', '>=', startDate)
      .where('date', '<=', endDate);


      How would one going about fetching only the items they are allowed to access, and only between the chosen date range?







      javascript google-cloud-firestore






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      edited Nov 18 '18 at 21:40









      Frank van Puffelen

      235k29381407




      235k29381407










      asked Nov 18 '18 at 19:45









      Jus10Jus10

      1,74721346




      1,74721346
























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          You'll have to restructure your documents in order to perform this query. Consider putting the uids that can access the document in a field with a List type called canAccess. Then query the list with array-contains after you create an index on that field.



          this.db.collection('items')
          .where('canAccess', 'array-contains', userId)
          .where('date', '>=', startDate)
          .where('date', '<=', endDate);





          share|improve this answer
























          • Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

            – Jus10
            Nov 18 '18 at 21:05











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          1 Answer
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          1














          You'll have to restructure your documents in order to perform this query. Consider putting the uids that can access the document in a field with a List type called canAccess. Then query the list with array-contains after you create an index on that field.



          this.db.collection('items')
          .where('canAccess', 'array-contains', userId)
          .where('date', '>=', startDate)
          .where('date', '<=', endDate);





          share|improve this answer
























          • Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

            – Jus10
            Nov 18 '18 at 21:05
















          1














          You'll have to restructure your documents in order to perform this query. Consider putting the uids that can access the document in a field with a List type called canAccess. Then query the list with array-contains after you create an index on that field.



          this.db.collection('items')
          .where('canAccess', 'array-contains', userId)
          .where('date', '>=', startDate)
          .where('date', '<=', endDate);





          share|improve this answer
























          • Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

            – Jus10
            Nov 18 '18 at 21:05














          1












          1








          1







          You'll have to restructure your documents in order to perform this query. Consider putting the uids that can access the document in a field with a List type called canAccess. Then query the list with array-contains after you create an index on that field.



          this.db.collection('items')
          .where('canAccess', 'array-contains', userId)
          .where('date', '>=', startDate)
          .where('date', '<=', endDate);





          share|improve this answer













          You'll have to restructure your documents in order to perform this query. Consider putting the uids that can access the document in a field with a List type called canAccess. Then query the list with array-contains after you create an index on that field.



          this.db.collection('items')
          .where('canAccess', 'array-contains', userId)
          .where('date', '>=', startDate)
          .where('date', '<=', endDate);






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 18 '18 at 20:28









          Doug StevensonDoug Stevenson

          76k990111




          76k990111













          • Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

            – Jus10
            Nov 18 '18 at 21:05



















          • Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

            – Jus10
            Nov 18 '18 at 21:05

















          Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

          – Jus10
          Nov 18 '18 at 21:05





          Oh I assumed querying an array would be just like querying an object in this situation (Would still need an index for array contents or something). Thanks! I'll give this a shot!

          – Jus10
          Nov 18 '18 at 21:05




















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