Esteban esbanarango

ActiveRecord::Calculations can receive SQL functions.

sum("CAST(total AS float)")
average("CAST(total AS float)")

total dataType is String.

Pedidos Salsamentaria 'El Sebiche'

Producto	Cantidad	Valor	Descripción / Comentario
Apple Magic Mouse	1	$35	De segunda
Mackbook Decal	3	$10.39	Calcomanías pal mac (Link 1, Link 2)
Hard case cover	3	$59.97	Protectores pal mac (1 air, 1 macpro, 1 macpro retina)
iPhone 5 - Green Carbon Fiber	1	$21.21	Protector pal iPhone

<input> with attribute required

This attribute specifies that the user must fill in a value before submitting a form. It cannot be used when the type attribute is hidden, image, or a button type (submit, reset, or button). The :optional and :required CSS pseudo-classes will be applied to the field as appropriate.

How to show a spinner only when the required validations pass? (Without using any validation plugin, only the required attribute).

Form with a required input

= form_for @person, remote: true do |f|
 = f.text_field, :first_name, required: true

Accessing and editing attributes from has_many :through join model.

This a solution for a problem that I recently faced.

Let's say we have these three classes Store, PaymentMethod and StorePaymentMethodSetting. A store may have multiple payment methods and these payment methods are similar between the stores. So here we have a HABTM (has and belongs to many) relationship between the Store and the Payment Method. I didn't use HABTM relationship, instead, I used has_many :through relationship, that's because I needed to use the relationship model (StorePaymentMethodSetting) as an independent entity to set the availability of a payment method in a store. Although I would always recommend using has_many :through instead of has_and_belongs_to_many, you never know if in the future you'll need the relationship model to have some attributes.

So here comes the problem, I wanted to update the availability of a payment method through the payment method itself. I mean, I didn't wanted to have

#BDNG

Biblioteca Digital de Nueva Generación

###Búsquedas

La aplicación de búsquedas de BDNG está compuesta por dos partes, aplicación Front-end (JavaScript) y Back-end (xQuery). Se recomienda tener conocimiento previo de xQuery para poder entender mejor la estructura y funcionamiento del Back-end.

Aquí algunos links que pueden ser de gran utilidad.

	require 'roo'
	require 'axlsx'
	require 'fileutils'

	class XlsScript

	attr_accessor :file_path

	def initialize(file_path)
	@file_path = file_path

	/Geo map for COLOMBIA WITH COORDS https://developers.google.com/chart/interactive/docs/gallery/geomap/

	function drawVisualization() {


	var dataTable = new google.visualization.DataTable();
	dataTable.addRows(3);
	dataTable.addColumn('number', 'LATITUDE', 'Latitude');
	dataTable.addColumn('number', 'LONGITUDE', 'Longitude');
	dataTable.addColumn('number', 'Votantes', 'Value'); // Won't use this column, but still must define it.

	select.form-control + .chosen-container{
	display: block;
	width: 100% !important;
	}

	select.form-control + .chosen-container.chosen-container-single .chosen-single {
	display: block;
	width: 100%;
	height: 34px;
	padding: 6px 12px;

	CREATE FUNCTION `lat_lng_distance` (lat1 FLOAT, lng1 FLOAT, lat2 FLOAT, lng2 FLOAT)
	RETURNS FLOAT
	DETERMINISTIC
	BEGIN
	RETURN 6371 * 2 * ASIN(SQRT(
	POWER(SIN((lat1 - abs(lat2)) * pi()/180 / 2),
	2) + COS(lat1 * pi()/180 ) * COS(abs(lat2) *
	pi()/180) * POWER(SIN((lng1 - lng2) *
	pi()/180 / 2), 2) ));
	END

	{
	"check_for_rvm": true,
	"run_rspec_command": "bundle exec /Users/esbanarango/.rbenv/shims/rspec {relative_path} -f d"
	}