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retrieving selected documents in couchdb


retrieving selected documents in couchdb

By : user2955972
Date : November 22 2020, 10:48 AM
Does that help You can get all the documents with a given list of IDs by making a POST request to the _all_docs endpoint of your database. The request body is a JSON document with a single field called keys, which contains an array of document IDs. If you want the full documents (and not just their IDs and revisions), you also have to supply include_docs=true as a query argument. Here is an example with curl:
code :
curl https://example.com/db/_all_docs?include_docs=true -X POST -d '
{ "keys": ["2", "4", "7"] }' 


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Retrieving all Documents from couchdb using Node.js

Retrieving all Documents from couchdb using Node.js


By : maate
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You can create a CouchDB view which will list the users. Here are several resources on CouchDB views which you should read in order to get a bigger picture on this topic:
Introduction to CouchDB Views Finding Your Data with Views View Cookbook for SQL Jockeys HTTP View API
code :
{
    "_id": generated by CouchDB,
    "_rev": generated by CouchDB,
    "type": "user",
    "name": "Johny Bravo",
    "isHyperlink": true
}
// view map function definition
function(doc) {
    // first check if the doc has type and isHyperlink fields
    if(doc.type && doc.isHyperlink) {
        // now check if the type is user and isHyperlink is true (this can also inclided in the statement above)
        if((doc.type === "user") && (doc.isHyperlink === true)) {
            // if the above statements are correct then emit name as it's key and document as value (you can change what is emitted to whatever you want, this is just for example)
            emit(doc.name, doc);
        }
    }
}
// query a view
db.view('location of your view', function (err, res) {
    // loop through each row returned by the view
    res.forEach(function (row) {
        // print out to console it's name and isHyperlink flag
        console.log(row.name + " - " + row.isHyperlink);
    });
});
MongoDB retrieving selected objects from nested documents

MongoDB retrieving selected objects from nested documents


By : user4742365
Date : March 29 2020, 07:55 AM
will help you You cannot return just the selected subdocument. You'll get all of them. So you'll have to filter on the client side.
CouchDB-Python retrieving documents

CouchDB-Python retrieving documents


By : user2923544
Date : March 29 2020, 07:55 AM
will help you Have you created a CouchDB view to retrieve the data? It will look something like this:
code :
{
  "_id": "_design/ddoc",
  "views": {
    "by_infoA": {
      "map": "function(doc) {
                   if(doc.details && doc.details.infoA)  {
                      emit(doc.details.infoA);
                   }
              }"
    }
  },
  "language": "javascript"
}
/dbname/_design/ddoc/_view/by_infoA?key="AQQ811P0"
Couchdb retrieving documents in array

Couchdb retrieving documents in array


By : user2938532
Date : March 29 2020, 07:55 AM
Hope this helps I solved it in the following way, but I am not sure whether it is the best way
code :
function(doc) {
    for (var i in doc.properties) {
        for (var x in doc.properties[i].zIds) {
            emit(doc.properties[i].zIds[x], doc);
        }
    }
}
Ember js: retrieving all documents from couchdb

Ember js: retrieving all documents from couchdb


By : Cookie BD
Date : March 29 2020, 07:55 AM
it helps some times Well I am new to ember js and i am stuck at a place. I wanted to know how can one use ember-cli-sofa to retrieve all the documents at once? Well I am using couchdb as backend and ember-cli-sofa helps to interact with database.Please give any tips how to approach this problem. , If you're fine without using models,
code :
let db = store.get('db.main.documents');
db.all({ include_docs: true }); // => Promise
db.view('ddocName', 'viewName', { include_docs: true }); // => Promise
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