BlogCode | Source code in blog | Blog library
kandi X-RAY | BlogCode Summary
kandi X-RAY | BlogCode Summary
Source code in blog
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of BlogCode
BlogCode Key Features
BlogCode Examples and Code Snippets
Community Discussions
Trending Discussions on BlogCode
QUESTION
I want to find prev/next
blog documents whose publish date is closest to the input document.
Below is the document structure.
Collection Examples (blog)
...ANSWER
Answered 2020-Sep-21 at 06:15You can go like following.
- We need to compare existing date with given date. So I used
$facet
to categorize both dates - The original data should be one Eg : B0003. So that I just get the first element of the
origin[]
array to compare withrest[]
array - used
$unwind
to flat therest[]
- Substract to get the different between both dates
- Again used
$facet
to find previous and next dates. - Then combined both to get your expected result
NOTE : The final array may have 0<=2
. The expected result given by you will not find out whether its a prev or next date if there is a one element. So my suggestion is add another field to say which date it is as the mongo playground shows
QUESTION
In My Case, I have a question about in my model I need one extra field like this
...ANSWER
Answered 2018-Jun-15 at 05:09You are right, you can use [NotMapped]
in your case. [NotMapped]
is useful in those scenarios where you don't want to create a table column, but you want to use it with some custom properties.
e.g. In your model class Student
, there are fields FirstName
and LastName
. If you client needs FullName
of Student
object. Then you can simply use [NotMapped]
in this case. Because there is no use to create a separate column for this in the table. And you don't need to write a custom logic while using FullName
throughout the application.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install BlogCode
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page