What does mapping mean in entity framework? - mapping

I can't find the definition of mapping on google. What is the exact meaning of it?

For anyone bumping on the same problem I had take a look at Gert Arnold's comment.

Related

HAPI FHIR - Data Model - Entity Relationship, does anyone have a link to an ERD model that is based on FHIR

I'm looking for an ERD based on the fundamental concepts of HAPI FHIR. I have access to a number of Data Architect tools (Erwin / PowerDesigner) and wanted to know if anyone has a model they can perhaps share or point to.
Thanks
I'm not really clear on what you are asking for here. HAPI FHIR's model is FHIR, so it's all described on the FHIR spec homepage.
If you're looking for the database ERD, there are some here: https://hapifhir.io/hapi-fhir/docs/server_jpa/schema.html
I have been looking myself for an ERD since sometime. The most exhaustive that I have found is https://github.com/microsoft/Industry-Accelerator-Health/blob/master/documentation/Entity.Diagram.for.Dynamics.365.Electronic.Medical.Records.png

What is the easiest way to implement trivial forum in Umbraco?

I am building an Umbraco site, and there is a need for a really simple forum (e.g. one level of topics, a simple subject/body form for new entries and replies, that's about it)
What is the easiest way to implement this? I think nForum is an overkill. Should I go with Umbraco API for member management and content creation, of should I use my own prefixed db tables and custom backend implementation?
Thanks in advance
Themos
For small and limited requirements you can surely look at the UFORUM, it is time tested and pretty decent.
It supports membership out of the box...
http://our.umbraco.org/projects/collaboration/uforum-basics
Check it out Hope it helps.

How to fix the Rails mass assignment issue?

After the big news yesterday, I've been trying to find a solid article about how to fix this issue with regard to different versions of Rails, and I'm unable to do so.
The best resource that I have found so far is https://gist.github.com/1978249#file_securing_rails_updates.md, but it only provides one solution: adding ActiveRecord::Base.send(:attr_accessible, nil) to the initializer. This is also the solution presented here at http://railspikes.com/2008/9/22/is-your-rails-application-safe-from-mass-assignment at a much earlier time.
However, at the same time, I remember seeing at another place that just turn on the configuration: config.active_record.whitelist_attributes = true should be suffice.
I am thoroughly confused, from all these different resources, I'm in need to decide between two solutions that doesn't have any reference to which versions of Rails they apply to.
Perhaps I had missed a generic article on the fix after the incident, but I had not found a single article on the rails blog that shows this. I was not able to find it elsewhere, could someone please enlighten me on this. Thanks!
I found this in the gist https://gist.github.com/1978249
Add the following initializer:
config/initializers/disable_mass_assignment.rb
ActiveRecord::Base.send(:attr_accessible, nil)
Looks like a temporary fix to me until rails core comes up with something better !!

Rails plugin for showing lists/index pages

I'm looking for a Rails plugin that facilitates showing lists of objects. Ideally I'd like to pass an ActiveRecord query and get a table that shows a result of this query. The table should be sortable, paginated and searchable (using some kind of filters).
I've already found two that might be ok. The first is DataGrid. It looks fine, but it uses will-paginate and as I adopted kaminari in the project, I'm not sure if such mixing would be a good idea.
FancyGrid looks tempting, but it seems to be not maintained and so I'm not sure, if it's good idea to use it.
Do you know anything more?
There's a railscasts that may be relevant. See here
Fancygrid is currently in the proess of being refactored. Please be patient, there will definitely be a new release.
A new version of FancyGrid has been just released.
You can find all related plugins here:
https://www.ruby-toolbox.com/categories/Table_Builders
So there are several other plugins:
Tabletastic
TableForCollection
Tableasy

Rails gem/plugin that gives suggestions how to optimize your DB queries

Some time ago I saw in a screencast showing a gem or plugin, which was able to suggest how to optimize your Rails DB queries, like where to use include or add an index and so on... Now I can't remember which screencast that was, but maybe somebody knows what I am talking about, I mean that gem/plugin.
Actually I have found it was on this screencast, and it is called bullet
You're probably thinking about https://github.com/eladmeidar/rails_indexes , possibly https://github.com/samdanavia/ambitious_query_indexer .
Good luck.
Was it rails_best_practices?
Now You can use my newly created gem 'query_optimizer'
You can optimize queries as Post.optimize_query(:comments)

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