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mongodb node take a skip property so pagination can be achieved

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Gabriel Baciu 2014-12-31 18:09:18 -05:00 committed by Gabriel Baciu
parent 9e4187d6a8
commit f461b121e1
2 changed files with 3 additions and 2 deletions
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2
nodes/core/storage/66-mongodb.html
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@ -197,7 +197,7 @@
<script type="text/x-red" data-help-name="mongodb in"> <script type="text/x-red" data-help-name="mongodb in">
<p>Calls a MongoDB collection method based on the selected operator.</p> <p>Calls a MongoDB collection method based on the selected operator.</p>
<p>Find queries a collection using the <b>msg.payload</b> as the query statement as per the .find() function. Optionally, you may also (via a function) set a <b>msg.projection</b> object to constrain the returned fields, a <b>msg.sort</b> object and a <b>msg.limit</b> object.</p> <p>Find queries a collection using the <b>msg.payload</b> as the query statement as per the .find() function. Optionally, you may also (via a function) set a <b>msg.projection</b> object to constrain the returned fields, a <b>msg.sort</b> object, a <b>msg.limit</b> number and a <b>msg.skip</b> number.</p>
<p>Count returns a count of the number of documents in a collection or matching a query using the <b>msg.payload</b> as the query statement.</p> <p>Count returns a count of the number of documents in a collection or matching a query using the <b>msg.payload</b> as the query statement.</p>
<p>Aggregate provides access to the aggregation pipeline using the <b>msg.payload</b> as the pipeline array.</p> <p>Aggregate provides access to the aggregation pipeline using the <b>msg.payload</b> as the pipeline array.</p>
<p>You can either set the collection method in the node config or on <b>msg.collection</b>. Setting it in the node will override <b>msg.collection</b>.</p> <p>You can either set the collection method in the node config or on <b>msg.collection</b>. Setting it in the node will override <b>msg.collection</b>.</p>

3
nodes/core/storage/66-mongodb.js
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@ -184,7 +184,7 @@ module.exports = function(RED) {
if (node.operation === "find") { if (node.operation === "find") {
msg.projection = msg.projection || {}; msg.projection = msg.projection || {};
var selector = ensureValidSelectorObject(msg.payload); var selector = ensureValidSelectorObject(msg.payload);
coll.find(selector,msg.projection).sort(msg.sort).limit(msg.limit).toArray(function(err, items) { coll.find(selector,msg.projection).sort(msg.sort).limit(msg.limit).skip(msg.skip).toArray(function(err, items) {
if (err) { if (err) {
node.error(err); node.error(err);
} else { } else {
@ -192,6 +192,7 @@ module.exports = function(RED) {
delete msg.projection; delete msg.projection;
delete msg.sort; delete msg.sort;
delete msg.limit; delete msg.limit;
delete msg.skip;
node.send(msg); node.send(msg);
} }
}); });