mangodb | A database that operates at CLOUD SCALE | Database library
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A database that operates at CLOUD SCALE
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- Run manodb command .
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QUESTION
I am two questions:
1- I want get by Id from database but operation is based on the key that is made automatically by MangoDB e.g _id
. I want to search based on a field that I created myself e.g: id
. for this porpouse I used following :
ANSWER
Answered 2022-Mar-18 at 20:20If you want to do that, you should use find
method:
QUESTION
I am new in node and express. So, I was learning how to do post request. When I learned, it was alright and it was creating another document in mangodb database. Today when I tried to do the same, this problem occurred.
I tried different things like removing required part in schema. But it seems express is failing to read req.body since when I send the request without any required fields in schema, it happily accepted and filled up default fields. I don't really understand what is happening. I was parallelly doing another project which is not giving this error.
PS. I am using mongoose@5.
Code to create tour:
...ANSWER
Answered 2021-Sep-30 at 17:26If the content-type
for your POST is JSON, then you need this:
QUESTION
I have a account model like this and it works fine:
...ANSWER
Answered 2021-Jul-14 at 18:52Since const db = await db.Mother.find();
results in an empty array, you will have to make an entry for Mother Model in order to make Mother collection appear in the DB.
Also to make your code cleaner, since you have the same card schema being used in Account & Mother, it would be great if you put it in a seperate file.
Edit 1:
QUESTION
I'm seeing a java dump as soon as I start the Spring boot project after attempting to configure MongoDB, so before I'm even adding any code. Does this mean Spring is attempting to make the connection as soon as the application starts, and not waiting for me to open a connection?
This is just a local test environment. A windows host, where I'm running Spring in Eclipse, and MongoDB in on a local Ubuntu VM, which I can reach otherwise.
I'm using Gradle, build.gradle
...ANSWER
Answered 2021-Apr-28 at 02:46The problem is that the mongo db is listening on localhost on the VM. It will be necessary to adjust the bound host/port in the VM.
QUESTION
I'm trying to import a json file into MangoDB, but get the error:
...ANSWER
Answered 2020-Dec-13 at 13:30with open('/Users/rokayadarai/Desktop/Coding/DataSets/Hotel_Reviews.json') as f:
data = json.load(f)
collection.insert_many(data)
cluster.close()
QUESTION
I try to insert from nodejs
to mangodb
, I was able to insert document into the database , but I don't know how to get the ID , can I get the ID when the inserted success ?
This is insert.js
...ANSWER
Answered 2020-Nov-12 at 05:50save method also provides a response in the callback. Please check the following code :
QUESTION
Hey everyone i am new here, trying to follow along a course on Udemy about connecting Node app to database, but stuck on a problem can't acctually run the server using mangodb database. Code is at the end.
The error
...ANSWER
Answered 2020-Oct-28 at 16:33On line 10 you already calling app.listen(3000)
and then (lines are hidden by screenshot) in the bottom of the file you are calling app.listen(3000)
again. That's the reason, leave it on line 10 only. If you need this instance multiple times think about assigning it to a constant. For example:
QUESTION
I must mention that I have no prior experience in backend development, and I know that questions on the subject have been asked before but I need a specific answer to this one.
I was wondering if I could use Firebase authentication to register & sign in my users and store their data in Mongodb?
If so, what am I supposed to learn besides "firebase_auth" and a Mangodb package to make it work?
...ANSWER
Answered 2020-Jul-05 at 13:47Yes, you can do that. Actually firebase auth will provide a uid
after authentication that you can use in MongoDB to identify the user. To make it work you'll need to have your own backend or APIs that will help you retrieve the data from MongoDB after the user is authenticated via firebase. Whereas a backend or the API is considered you can use any framework to make it eg. flask(python), express(nodejs), ruby on rails, etc.
If you already have an existing authentication system and want to integrate it with firebase then firebase provides custom authentication, you can have a look at the same.
QUESTION
I am new to MangoDB and Node JS. I have always worked on SQL databases and I do not know the syntax of MongoDB well. I wanna try to filter the array that I receive from a MongoDB database. I know that JavaScript has a .filter()
function to filter just the results that contain a string. Is it best practice to get all the objects from MongoDB and filter in Node or do I let MongoDB do the filtering?
My Node.JS project is a back-end project using Node.JS and Express to do CRUD operations on a MongoDB database. In the request I send a parameter called 'equalTo' that contains the value that should be filtered on.
...ANSWER
Answered 2020-Apr-04 at 17:58The format is the following:
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Install mangodb
You can use mangodb like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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