So I have a create_table like this for Courses at a School: create_table :courses do |t| t.string :name t.references :course t.timestamps end but I want it to reference two other courses like: has_many :transferrable_as # A Course has_many :same_as # Another Course Can I say the following? t.references :transferrable_as, :as=> :course
These are Rust's named lifetimes. Quoting from The Rust Programming Language: Every reference in Rust has a lifetime, which is the scope for which that reference is valid. Most of the time lifetimes are implicit and inferred, just like most of the time types are inferred. Similarly to when we have to annotate types because multiple types are possible, there are cases where the lifetimes of referen
Update 2 (01/31/19) As of today, Cloud Firestore is no longer in Beta and is Generally Available: https://cloud.google.com/blog/products/databases/announcing-cloud-firestore-general-availability-and-updates This means that Cloud Datastore is no longer an option for new projects (you can keep using it on existing projects). New projects that want to use the Datastore API can use Cloud Firestore in
I have some information on my mongoose models which is transient. For performance reasons I dont wish to store it against the model.. But I do want to be able to provide this information to clients that connect to my server and ask for it. Here's a simple example: var mongoose = require('mongoose'), db = require('./dbconn').dbconn; var PersonSchema = new mongoose.Schema({ name : String, age : Numb
I have used resize_to_fill down to a [1,1] size thus reducing the image to a single pixel containing what is basically the average color of the entire image (provided the image does not have a huge disparity between height and width, of course). Now I'm attempting to retrieve the color of this single pixel in hex format. From the terminal window I am able to run the convert command like this: conv
I am putting together a few models for my codeigniter site and can't seem to find any word in the documentation of how to handle errors that could occur when using the Active Record system. The documentation demonstrates how to perform CRUD along with some relatively involved queries but no where along the line is error handling discussed. I have done a quick google search and it would appear that
I have a list of events that I fetch. I'm trying to include every user associated to this event and every profile associated to each user. The Users get included but not their profiles. How Would i do this Event.includes(:users [{profile:}]) The docs don't seem to be clear: http://guides.rubyonrails.org/active_record_querying.html
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