err

Unsorted notes on Fulcro RAD.

Reports

Displaying to-one :ref attributes

If you have a :ref attribute, you typically do not want to display it directly, i.e. its ident, but a more display-friendly prop of the child entity. This is handled automatically for you by Pathom, you only need to specify the attribute you want.

Let's assume you have a Person entity with the ref attribute person/home-address with the target address/id. You can simply have ro/columns [person/name ... address/city address/country] (assuming these attributes are defined and have :address/id among their ao/identities). Pathom can navigate from person/home-address -> address/id -> address/city etc.

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/*
(ns ch-market-place.core-test
  (:require [clojure.test :refer :all]
            [ch-market-place.core :refer :all]))

;; Here are the minimal inputs you should use for your test
;; cases. These test cases must be shown to work in your program:

;; Scan these items in this order: ABCDABAA; Verify the total price is
;; $32.40.

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Keybase proof

I hereby claim:

• I am err on github.
• I am casplock (https://keybase.io/casplock) on keybase.
• I have a public key ASBkbm29t-V6xTkNsl3zBWW1UUqs8M49AVQVHshW3V1NAwo

To claim this, I am signing this object:

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Jeb A. Beich
Panama City, FL
jebbeich (at) gmail (dot) com
(352) 213-7344

Summary

2000 Enterprise Java - 2002 J2ME - 2005 Python/.Net - 2008 Android - 2012 Clojure

Languages

err

(defn render-squares
  [component props]
  (let [svg (-> js/d3 (.select (dom/node component)))
        data (clj->js (:squares props))
        selection (-> svg
                    (.selectAll "rect")
                    (.data data (fn [d] (.-id d))))]
    (-> (.enter selection)
      (.append "rect")
      (.style "fill" (fn [d] (.-color d)))

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## Using Emacs CIDER as the Figwheel REPL tool

project.clj should have this line:

```
  :figwheel { :nrepl-port 7888 }
```
At the defproject-level.

It enables external tools to connect to the Figwheel REPL. To connect

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;;
;; NS CHEATSHEET
;;
;; * :require makes functions available with a namespace prefix.
;;
;; * :use makes functions available without a namespace prefix
;;   (i.e., refers functions to the current namespace).
;;
;; * :import refers Java classes to the current namespace.
;;

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;
https://floobits.com/r/err/err-clj/