node.js - How to check if there is an existing MongoDB connection using mongoose? -

-

i have express app connects mongodb via mongoose, , have init script connect mongodb.

is there way detect if there existing connection db, not need connect again in script anytime want run it, there consequences connecting db multiple times via mongoose.

you can check using mongoose.connection.readystate,

ex.

var mongoose = require('mongoose'); console.log(mongoose.connection.readystate);

the state return 1 if connected.


Comments

Post a Comment

Popular posts from this blog

android - Why am I getting the message 'Youractivity.java is not an activity subclass or alias' -

-
Image
i created own android project , cut , pasted code exercise: http://androidexample.com/show_phone_contacts_in_autocomplete_suggestions_-_android_example%20/index.php?view=article_discription&aid=106&aaid=128# when build project no errors or warnings. when run project window error: annoyingly, can't make window smaller, can't click of buttons. cick 'x' @ top, close it. here's project structure: where getting 'autocompletemain' from? (note small c) class named autocompletemain. help. and have activity included in android manifest, in case you're wondering: <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.androidexample.autocompleteedittext" android:versioncode="1" android:versionname="1.0" > <uses-permission android:name="android.permission.read_phone_state...
Read more

Google sheets equipment borrowing system -

-
i working on google sheets system shows has item. have never worked google apps script before, want check value of c2, make sheet copy of data (d2, e2, g2) here (it trying copy 2nd column) , move here (in different sheet same document) next corresponding name on each particular section i think want rotate data columns becomes rows, , rows become columns, right? what need [transpose][1] function. for example, in a2, if put =transpose('sheet 2'!c1:1) , google sheets automatically fill column values of first row of 'sheet 2', starting @ c1 position. updated answer: here working example here steps: get filtered list of timestamp matched equipment sort list it's reverse order get first item sorted list ("last date") get position of "last date" in timestamp list get item in action list @ same position "last date" if item "check out" it's not available. note: might want store result of index() ...
Read more

c# - Ploeh AutoFixture was unable to create an instance from System.Runtime.Serialization.ExtensionDataObject -

-
we have mvc project references wcf services. references added (extensiondataobject)extensiondata property every dto , response object , autofixture fails create anonymous instances of these types. example: public partial class searchresultsdto : object, system.runtime.serialization.iextensibledataobject, system.componentmodel.inotifypropertychanged { [system.nonserializedattribute()] private system.runtime.serialization.extensiondataobject extensiondatafield; [global::system.componentmodel.browsableattribute(false)] public system.runtime.serialization.extensiondataobject extensiondata { { return this.extensiondatafield; } set { this.extensiondatafield = value; } } } code: _fixture = new fixture().customize(new automoqcustomization()); var dto = _fixture.createanonymous<searchresultsdto>(); exception: ploeh.autofixture.objectcreationexception: ploe...
Read more