mongodb

问题 On MongoDB 3.4.4 I've created a collection with a validator, but now some inserts fail this rules and I can't understand why. Is there a way to output the rules of the validor? I'm afraid the rules applied are different from what I think they are... Is there a way to improve the error message? "Document failed validation" in this scenario is quite useless. Thank you! 回答1: You can see the validation rules (among other collection information) with db.getCollectionInfos() for all collections or

问题 I have files stored in GridFS. I want to show the user a list of files, and allow them to download them. I have the following code that saves the file to the server, but I'm not sure how to serve the file to the client. How do I serve files from GridFS with Flask? <form id="submitIt" action="/GetFile" method="Post"> {% for file in List %} <input type="checkbox" name="FileName" value={{file.strip('u').strip("'")}}>{{file.strip('u').strip("'")}}<br> {% endfor %} <a href="#" onclick="document

问题 I'm trying to make this query to my collection Audios var querySlow = { "palabra": { $regex: "^" + keywords, "$options": "i" }, $or: [{ "_p_pais": { $in: interested_accents } }, { "languageCodeTatoeba": { $in: interested_accents_tatoeba } }] }; // takes 20 seconds This is actually really really slow but if I remove any of the $or , it is very very fast , for example: var queryFast1 = { "palabra": { $regex: "^" + keywords, "$options": "i" }, $or: [{ "_p_pais": { $in: interested_accents } }] };

问题 I'm trying to make this query to my collection Audios var querySlow = { "palabra": { $regex: "^" + keywords, "$options": "i" }, $or: [{ "_p_pais": { $in: interested_accents } }, { "languageCodeTatoeba": { $in: interested_accents_tatoeba } }] }; // takes 20 seconds This is actually really really slow but if I remove any of the $or , it is very very fast , for example: var queryFast1 = { "palabra": { $regex: "^" + keywords, "$options": "i" }, $or: [{ "_p_pais": { $in: interested_accents } }] };

问题 I'm trying to make this query to my collection Audios var querySlow = { "palabra": { $regex: "^" + keywords, "$options": "i" }, $or: [{ "_p_pais": { $in: interested_accents } }, { "languageCodeTatoeba": { $in: interested_accents_tatoeba } }] }; // takes 20 seconds This is actually really really slow but if I remove any of the $or , it is very very fast , for example: var queryFast1 = { "palabra": { $regex: "^" + keywords, "$options": "i" }, $or: [{ "_p_pais": { $in: interested_accents } }] };

问题 I have been trying to validate my data using the validators provided by MongoDB but I have run into a problem. Here is a simple user document which I am inserting. { "name" : "foo", "surname" : "bar", "books" : [ { "name" : "ABC", "no" : 19 }, { "name" : "DEF", "no" : 64 }, { "name" : "GHI", "no" : 245 } ] } Now, this is the validator which has been applied for the user collection. But this is now working for the books array which I am inserting along with the document. I want to check the

问题 I want to get only the objectId from mongodb with matched crieteria.I can get it with dbobject and cursor method.But I used mongo client here and have no idea how to do it. Thanking you MongoClient client = new MongoClient("localhost", 27017); MongoDatabase database = client.getDatabase("baazaronline"); MongoCollection<Document> collection = database .getCollection("Attribute"); Bson filter = new Document("attcode", attcode); Bson newValue = new Document("DefautV", DefautV).append("IVSO",

问题 I want to get only the objectId from mongodb with matched crieteria.I can get it with dbobject and cursor method.But I used mongo client here and have no idea how to do it. Thanking you MongoClient client = new MongoClient("localhost", 27017); MongoDatabase database = client.getDatabase("baazaronline"); MongoCollection<Document> collection = database .getCollection("Attribute"); Bson filter = new Document("attcode", attcode); Bson newValue = new Document("DefautV", DefautV).append("IVSO",

问题 I want to get only the objectId from mongodb with matched crieteria.I can get it with dbobject and cursor method.But I used mongo client here and have no idea how to do it. Thanking you MongoClient client = new MongoClient("localhost", 27017); MongoDatabase database = client.getDatabase("baazaronline"); MongoCollection<Document> collection = database .getCollection("Attribute"); Bson filter = new Document("attcode", attcode); Bson newValue = new Document("DefautV", DefautV).append("IVSO",

问题 I have such model: { "_id":"5b90eea8c02e062be2888446", "storeGuid":"e97d4730-9b8a-49ed-be87-caf4054439aa", "storeId":"0", "storeDbName":"0", "tenant":"dev", "configGroup":[ { "groupName":"peopleCounter", "config":[ { "key":"averageWaitPeriodTime", "value":"60", } ] }, { "groupName":"sessionMonitor", "config":[ { "key":"testKey1", "value":"987", }, { "key":"testKey2", "value":"123", } ] } ] } I am trying to update value for "key":"testKey2" I have such update statement: await coll