#rails 4

[banker-hacker]

why isn't #select2 reloading after @ajax calls? #turbolinks?

because #turbolinks is the devil

turbolinks uses ajax to refresh pages, which means your default

$(document).ready( function(){})

syntax will not be reloaded. so you need to put whatever javascript methods you want reloaded after any change in a separate

$(document).on("page:load", init);

call. turbolink doc here and very helpful so answer here

update 834pm: that didn't work.

i'm getting this error:

Uncaught query function not defined for Select2 s2id_search_period_start

could be related to turbolinks page:change function, which might be repeating and adding additional divs as said in this post

UPDATE dec 9, 2014 9am:

still not working.

could it be because:

By default, select2 adds the select2-offscreen class to already initialized targets to hide them. By using the jQuery .not(selector) function I exclude them to target to fresh input fields only. source

?

this so article deals somewhat with the multi-select, although this issue is more about the css generated for the selected items.

HOLY SHIT. this worked.

$('#box-inner-search').html("<%= escape_javascript(render 'searches/control_panel') %>") $(".menu-select2-update").select2(); init();

although i was re-initialized select2 on page change, what did it was that i re-initialized it on the partial that i was rendering. probably what is happening is that on an ajax call, none of the jquery pages are being reloaded. that's a good thing because it would slow things down. instead, you should put any re-initializing on the unobtrusive javascript method. in other words, it is an opt-in method; js methods will not be loaded unless you specifically opt in via your js.erb file. good one, rails.

this article reminds you to add a loading indicator

[banker-hacker]

bundle update

http://bundler.io/man/bundle-update.1.html

http://patshaughnessy.net/2011/9/24/how-does-bundler-bundle

http://ryanbigg.com/2011/01/why-you-should-run-bundle-update/

[banker-hacker]

rake tasks

all the articles i've read about the purpose of rake seem to fail in the basic question, which is, "why would i put something in a rake file?"

basically it seems like you put admin level actions that are not initiated by the user or the user interface in rake.  it's kind of like a seed file in that way.

[banker-hacker]

ActiveRecord::UnknownAttributeError

forgot to add

accepts_nested_attributes_for :production_media_users

[banker-hacker]

ok this is the ugliest hack i've ever done

believe me, i've had my share of lows in this project, but i think i've reached new depths on this one. fuck it. this is in my view:

<% if @paypal == true %><span id='paypal-return'></span><% end %>

this is in my js file:

if($("#paypal-return").length > 0){ $('#btn-confirm-purchase-modal').click(); }

[banker-hacker]

how do i use enact a jquery method from a html call without using obtrusive js within html page?

i want a modal to popup when when paypal sends the user back to the return_url.  because it is a standard html call, i can't turn the modal on using jquery.  how do i do that within a html call without using obtrusive js within the html page?

the way the modal works (from bootstrap), it is just adding one class and changing the value of an aria.  so i need to find a way to change those two things from a html call.

ANSWER: in next post

[banker-hacker]

Certain options in drop down should be disabled

how to do this? this doesn't work; it just disables the entire dropdown

<%= ff.select :timing_period_id, @timing_period_array, {}, disabled: [1], class: 'form-control' %>

[turnbullventures]

Postgres not a fan of ordering uniq records

Last night (and into this morning) I was banging my head against an error when adding a search feature in my top secret app, to be named at a later date.

The search was built to look for players by name, but I wanted to include up to the last 3 teams or leagues the player had played on to help identify the correct player when search results included players of same name. 

Now players were not directly related to teams, but the relationship is created when the user writes a report on a player, during which they select a team or league. We also want to wait until the a report is publish (has a published timestamp)

So in the model:

class Player < ActiveRecord::Base has_many :scout_reports,-> {where('published IS NOT NULL')} has_many :teams, :through => :scout_reports

We are also interested in the most recent 3 most recent teams showing up in the search results, and to avoid duplicate team names appearing when multiple reports exist I tried adding uniq to the teams scope.

So it now looked like this:

class Player < ActiveRecord::Base has_many :scout_reports,-> {where('published IS NOT NULL').order('published DESC'} has_many :teams, ->{uniq}, :through => :scout_reports>

And that is when it failed.

The error looked like this:

ActiveRecord::StatementInvalid: PG::Error: ERROR: for SELECT DISTINCT, ORDER BY expressions must appear in select list

After scouring the internets and trying variations of adding order and uniq, I found I needed to add a select statement to the teams scope that referenced the published attribute, as well as place the order using uniq. The finished and working product is as follows:

has_many :scout_reports,-> {where('published IS NOT NULL')} has_many :teams, ->{uniq.select("teams.*, scout_reports.published AS published").order('published DESC')},:through => :scout_reports before_create :format_names,:set_fullname

Hope this helps someone.