mines!

A modern day blog engine?

2014-11-25T20:32:00.002+02:00

This blog will now probably continue here. I'm not sure I'm up to putting any effort in transferring the old posts.

Bash Contexts Cont. (for those still bashing)

2014-10-13T16:25:00.000+03:00

To iterate on my olde poste mines!: bash contexts about directory-specific shell scripts — via local ./.bashrc's and the following line at the end of ~/.bashrc So, to make this technique complete (and to support login shells starting from non-home directories, like with Terminal.app's Resume), you must also add the following line at the beginning of ~/.profile

pow and byebug - staying in the web app dev env heaven: an update for ruby 2.1

2014-06-05T06:29:00.001+03:00

The previous version (for ruby 1.9) is here.

It seems ruby-debug has fallen out of favour with the community and the replacement is byebug.
So here's my follow-up on the old post.

The steps to enable byebugging in your app dev env:

echo export POW_WORKERS=1 >> ~/.powconfig # make sure pow runs only one app process — globally
cd <your project directory>
Add byebug to your bundle (and remove ruby-debug if exists).
Paste the following snippet at the end of your config/environments/development.rb — for rails, or in the appropriate development environment initialisation module — for the platform of your choice:
echo export RUBY_DEBUG_PORT=10007 >> .powenv # make sure we enable debugging with a machine-unique port, e.g. 10007 (you should pick different ports for different projects)
touch tmp/restart.txtThen make any request to actually restart your server.
byebug -R localhost:10007 -d # you're back in business, go wild with debugger's in your code

A Nice Support Chat -or- Skype R.I.P., Goodbye M$kype

2014-04-22T10:16:00.002+03:00

(a chat with their support after they've silently failed to take my money almost three weeks ago leaving my credit very low)

info: at 15:35:57

Please wait for an agent to respond. You are currently '1' in the queue.

info: at 15:35:58

Privacy Statement

You are now chatting with 'Rose Ann S'.

Costa Shapiro: at 15:36:09

Hi Rose Ann

Rose Ann S: at 15:36:11

Hello! Welcome to Skype Live Support! My name is Rose.

Rose Ann S: at 15:36:11

In case we get disconnected, simply click on the Chat Support Link and you will be reconnected to us in no time.

Rose Ann S: at 15:36:11

https://support.skype.com/support_selection .

Rose Ann S: at 15:36:11

With that being said, how may I help you?

Costa Shapiro: at 15:36:26

My payment is pending

Rose Ann S: at 15:36:33

Oh my!

Rose Ann S: at 15:36:51

I understand your having issue with your payment,

Costa Shapiro: at 15:36:59

Yes, can you check it?

Rose Ann S: at 15:36:58

Let me check it here for you.

Costa Shapiro: at 15:37:03

thx

Rose Ann S: at 15:37:08

Sure!

Rose Ann S: at 15:37:09

To make sure I am pulling up the right account may I have your Skype name?

Costa Shapiro: at 15:37:54

xxxxxxxx

Rose Ann S: at 15:38:04

Thank you! May I also know your first name so I can address you properly?

Costa Shapiro: at 15:38:31

Costa

Rose Ann S: at 15:38:38

Thank you Costa.

Rose Ann S: at 15:38:43

It's nice to meet you.

Rose Ann S: at 15:38:52

I am now checking your account here.

Rose Ann S: at 15:39:05

May I know the last 4 digits of your credit card?

Costa Shapiro: at 15:39:15

XXXX

Rose Ann S: at 15:39:15

Just for me to double check it here on my end.

Rose Ann S: at 15:39:19

Thank you.

Rose Ann S: at 15:39:48

I can see here that the status of your card is CREATED.

Rose Ann S: at 15:40:09

What I can advice it I will cancel it here then please try to purchase again.

Rose Ann S: at 15:40:26

Your credit card is not yet active in our end.

Rose Ann S: at 15:40:40

Is it okay with you if I cancel it here?

Costa Shapiro: at 15:40:53

Why?

Rose Ann S: at 15:41:14

As I checked, it is not yet active in our end.

Rose Ann S: at 15:41:41

Just to avoid confusion on our system, we need to delete the info again, then put it back.

Costa Shapiro: at 15:41:47

What does it mean, not active?

Rose Ann S: at 15:41:59

Okay.

Rose Ann S: at 15:42:27

There still no autorization for you to purchase using your credit card since it is not yet active on our end.

Costa Shapiro: at 15:42:35

Your system gets confused by credit cards?

Rose Ann S: at 15:42:53

Yes.

Costa Shapiro: at 15:43:06

Why?

Rose Ann S: at 15:43:23

Because you enter it already.

Costa Shapiro: at 15:43:38

So, if I make the payment again, there's a chance of the system getting confused again, right?

Rose Ann S: at 15:43:49

But it is not yet activated, that is why we need to cancel it and put it back again.

Rose Ann S: at 15:44:22

That is why we need to try, then lets see what will happen.

Rose Ann S: at 15:44:42

Rest assure that once we try to purchase again, it will be successful.

Costa Shapiro: at 15:44:51

You know, this is a funny talk.

Costa Shapiro: at 15:45:20

Your system has a bug and you're trying to make me help you debug it, right?

Rose Ann S: at 15:45:32

No.

Costa Shapiro: at 15:45:47

So how do you know it will be successful?

Rose Ann S: at 15:46:02

What I am saying is, your payment details is not yet active on our end.

Costa Shapiro: at 15:46:21

Has there been a bug that has been fixed?

Rose Ann S: at 15:46:34

What we need to do is purchase again, then put back your payment details.

Costa Shapiro: at 15:46:40

On my end, the card is perfectly active, you know.

Rose Ann S: at 15:46:59

I can say that this is not a bug issue.

Rose Ann S: at 15:47:02

Alright.

Rose Ann S: at 15:47:19

Then please try to purchase again.

Rose Ann S: at 15:47:31

I am sure it will go through on your end.

Costa Shapiro: at 15:48:07

Please help me understand. I make a lot of internet purchases. I've never been told "your card is not active on our end, and this is not a bug".

Costa Shapiro: at 15:48:19

Is this the intended behaviour of your system?

Costa Shapiro: at 15:48:26

If not, it's a bug.

Rose Ann S: at 15:48:36

Let me explain it to you.

Rose Ann S: at 15:48:47

Is that okay with you?

Costa Shapiro: at 15:49:06

If this is a bug, so either you cannot be sure it will work this time, or it has been fixed, correct?

Costa Shapiro: at 15:49:19

Yes, please explain. Your logic kinda eludes me.

Rose Ann S: at 15:49:45

As I said it is not a bug issue. Please give me a minute to explain what I can see on your account.

Rose Ann S: at 15:49:48

Thank you!

Rose Ann S: at 15:51:36

As I checked, the reason why your purchase did not go through is because, your payment details is not yet active on our end, I can see that you purchase Skype credit on your account last April 3,2014. But it still Pending on your end right?

Rose Ann S: at 15:51:51

Nothing to worry, it will never be push through.

Rose Ann S: at 15:52:29

Since your payment details is not yet authorize to purchase.

Costa Shapiro: at 15:53:08

Who authorises my details for purchases?

Rose Ann S: at 15:53:20

You're bank.

Costa Shapiro: at 15:53:52

So my bank did not authorise the transaction, is that what you're saying?

Rose Ann S: at 15:54:21

So what you need to do is contact your bank, then inform them to authorise your transaction with Skype for it to be DELIVERED on your end.

Rose Ann S: at 15:54:25

Yes.

Costa Shapiro: at 15:55:14

Ok, it's a bit different version of what you've said earlier. And it makes sense this time.

Rose Ann S: at 15:55:25

I see.

Rose Ann S: at 15:55:32

Sorry for the confussion.

Rose Ann S: at 15:56:15

The best thing to do is contact your bank now, then rest assure that you will be able to purchase a credit.

Costa Shapiro: at 15:56:22

You are still sure if we delete my details and make another payment attempt, it will go through, right?

Rose Ann S: at 15:57:33

We just want to try to repurchase again, but if it wont work, you really need to contact your bank.

Costa Shapiro: at 15:58:18

I see, so you're not so sure as you were just 5 minutes ago.

Rose Ann S: at 15:58:45

Alright.

Rose Ann S: at 15:58:50

Sorry about that.

Costa Shapiro: at 15:59:04

I'm calling my bank, do you have any transaction id I can give to them?

Rose Ann S: at 15:59:21

It's just that we want to try first other option.

Rose Ann S: at 15:59:24

Alright.

Rose Ann S: at 15:59:50

Here is your reference number about this conversation 1243782898.

Costa Shapiro: at 16:00:04

(I hope they will help me fast enough, because I'm in another country and my Skype credit is extremely low)

Rose Ann S: at 16:00:27

I understand that.

Rose Ann S: at 16:00:50

Do worry once your bank authorise your payment, you will be able to purchase a credit.

Rose Ann S: at 16:01:59

All you need to do is inform your bank that you want to authorise your payment with Skype. Then just to make sure, plase wait within 1 hour then purchase again.

Rose Ann S: at 16:03:45

Is there anything else I can assist you with today?

Rose Ann S: at 16:04:15

Are we still connected Costa?

Costa Shapiro: at 16:05:05

yes, I'm with my credit card company

Rose Ann S: at 16:05:15

Alright.

Rose Ann S: at 16:06:03

Please let me know once your done talking to your bank.

Rose Ann S: at 16:06:06

Thank you!

Costa Shapiro: at 16:08:33

Ok, they said they didn't see any transaction.

Rose Ann S: at 16:09:01

Yes, beacuse your card is not yet authorise to purchase.

Costa Shapiro: at 16:09:25

...from you. No failed transactions at all. And I had a lot of transactions this month.

Costa Shapiro: at 16:09:35

Look, let me explain.

Rose Ann S: at 16:09:44

Okay.

Costa Shapiro: at 16:10:54

How credit card works: I give the number, you charge the money.

Rose Ann S: at 16:11:08

Alright.

Costa Shapiro: at 16:11:15

If a transaction fails, it's either on my bank's end or on your end.

Costa Shapiro: at 16:11:23

I've just cleared my end.

Rose Ann S: at 16:11:29

Okay.

Costa Shapiro: at 16:12:10

Your internal statuses are of no interest to me. You're just wasting my time while I've been a paying customer for a long time.

Costa Shapiro: at 16:12:16

Right?

Rose Ann S: at 16:12:29

Alright.

Rose Ann S: at 16:12:49

Thank you for your effort contacting your bank about this.

Rose Ann S: at 16:14:34

It's just that it is different from Skype, since it is the first time you will use your card XXX, Skype will still need the authorization from your bank for any transaction you will made to us.

Rose Ann S: at 16:15:13

Even if you enter your payment details, we still need the authorisation from your bank for your purchase to be DELIVERED.

Costa Shapiro: at 16:16:39

But your system doesn't seem to have made the transaction.

Costa Shapiro: at 16:16:57

Since my credit company didn't see it.

Costa Shapiro: at 16:17:03

So, what gives?

Rose Ann S: at 16:17:14

Alright.

Rose Ann S: at 16:18:54

Since I can see here all your transaction made with Skype that is not been DELIVERED due to the reason that your payment method is not yet authorise, that is why they cannot see it on their end.

Costa Shapiro: at 16:19:00

I've just looked through my purchase history. Gosh, I've paid 100s of ££ to you...

Rose Ann S: at 16:19:17

But on Skype I can say that we process your purchase request.

Costa Shapiro: at 16:19:54

You know, within this period there were no such problems, this is probably the fourth credit card that I'm using with Skype.

Rose Ann S: at 16:20:09

I see.

Costa Shapiro: at 16:20:22

Who authorises the payment methods? Rose Ann S: at 16:20:53

You need to ask for the authorisation on your bank.

Costa Shapiro: at 16:21:15

You told me it was my bank, well it isn't — they have nothing to authorise — they have no pending transaction on their end.

Costa Shapiro: at 16:21:19

Then who?

Rose Ann S: at 16:21:28

Then once they authorise the payment, you can purchase Skype credit on your Skype account.

Costa Shapiro: at 16:21:51

Please try to understand what I wrote right above.

Rose Ann S: at 16:22:07

I understand it Costa.

Costa Shapiro: at 16:22:35

So, what I should tell my bank to authorise now?

Rose Ann S: at 16:23:00

Agian, the reason why they cannot see the transaction you made is because your payment method is not yet authorise to purchase.

Costa Shapiro: at 16:23:57

Why it is not authorised?

Rose Ann S: at 16:24:14

So even if you make a purchase with us, your bank will not see it because your card is not yet allowed to make a purchase.

Costa Shapiro: at 16:24:38

So I cannot make a purchase with you, right?

Rose Ann S: at 16:25:00

You can if your bank will authorise the payment.

Costa Shapiro: at 16:25:25

But they will not see it since the card is not authorised, right?

Costa Shapiro: at 16:26:05

So they must authorise the payment they don't see, right?

Rose Ann S: at 16:26:19

That is why I ask you to call your bank and inform them that you want to authorise your payment with Skype.

Rose Ann S: at 16:26:31

Your bank is the one deciding to authorize the card or not. Please call them back, and let them know that we need a permission to use this card for Skype purchases.

Costa Shapiro: at 16:26:47

That's what I did. And they said they see no transaction from you.

Costa Shapiro: at 16:27:34

They authorise me to make payments to whoever I want. That's the idea of credit cards.

Rose Ann S: at 16:27:45

Can you please try to purchase now?

Costa Shapiro: at 16:27:59

Why?

Rose Ann S: at 16:28:00

Then let's see if they authorise your card already.

Costa Shapiro: at 16:28:15

They did nothing, I've just talked to them.

Rose Ann S: at 16:28:22

To make sure that your credit card is already authorise to make payment to Skype.

Costa Shapiro: at 16:28:28

They can only authorise transactions they see.

Rose Ann S: at 16:28:29

Okay.

Costa Shapiro: at 16:29:00

My card is authorised to make payments to any business in the world.

Rose Ann S: at 16:29:02

They need to authorise your card.

Rose Ann S: at 16:29:28

Not your transaction made.

Costa Shapiro: at 16:29:34

Nope, my card is authorised to any payments the moment I have it.

Rose Ann S: at 16:29:43

Okay.

Rose Ann S: at 16:30:09

Then make a purchase for Skype credit on your account.

Costa Shapiro: at 16:30:23

That is international Platinum MaserCard I've been using for many years.

Rose Ann S: at 16:31:26

As you said, it is authorise to make purchase, what I can advise is purchase for Skype credit, then I will check it here on my end if it will be DELIVERED.

Costa Shapiro: at 16:31:38

Plus, I've just been talking to the credit card company and they told me I have no problem paying to any company, including Skype... Sorry, Microsoft.

Rose Ann S: at 16:31:52

Okay.

Costa Shapiro: at 16:32:46

I'm saying it's always been authorised, the credit company or bank did not do any action today.

Rose Ann S: at 16:33:04

Okay.

Costa Shapiro: at 16:33:17

So there will be no difference on my end. Will be any difference on your end?

Rose Ann S: at 16:34:21

You need to make a purchase first then let see if there will be a difference on your first purchase.

Costa Shapiro: at 16:35:28

So, you're positive your system has no bugs, but you're not sure what it will do if we try again, right?

Rose Ann S: at 16:35:52

Beacuse it is really not a bug issue.

Rose Ann S: at 16:37:00

Believe me, your not the only person, we ask to authorise first their payment method to make a purchase to Skype.

Costa Shapiro: at 16:38:06

How do you want me to authorise my "first" payment?

Rose Ann S: at 16:38:35

As I said, all you need to do is contact your bank.

Rose Ann S: at 16:38:52

Then as them to authorise your card for your purchase.

Costa Shapiro: at 16:39:58

I just did, what they said was that they had seen no transaction from you and that my card has always been authorised to any payments in the world. What's next?

Rose Ann S: at 16:40:17

Okay.

Costa Shapiro: at 16:42:31

Well I think it's not Okay, I think I've just had enough, I'm taking my money somewhere else, I've heard Rebtel has some nice software.

Costa Shapiro: at 16:42:35

Cheery bye.

Rose Ann S: at 16:42:43

Actually the buttom line here is you need to contact your bank then inform them to authorise your payment with us not the transaction you made. You're credit card I mean.

Rose Ann S: at 16:43:02

Alright.

Costa Shapiro: at 16:43:14

All the best to you and to Microsoft.

Rose Ann S: at 16:43:25

Thank you for your time chatting with me.

Rose Ann S: at 16:43:47

In the future you can also find answers to any common issue and questions at support.skype.com

Rose Ann S: at 16:43:57

It’s been a pleasure assisting you today.

Rose Ann S: at 16:44:03

Good bye for now.

Rose Ann S: at 16:44:07

Take care!

info: at 16:44:17

Chat session has been terminated by the agent.

mail_view for human — and also for automatic — testing

2014-03-30T15:12:00.003+03:00

I've come to use a nice gem called mail_view for visual testing of email templates in Rails.
I think it is totally legit and desirable to re-use that code in the views testing suite, so here we go:
(provided that your MailView's subclass is MailPreview, put this in ./spec/views/mail_spec.rb)

This just checks for the lack of exceptions and any content, but it's a starting point.

p.s. A nice complementary pull request of mine is here.

Less stupid Rails translation helper (with blocks for interpolation)

2014-01-23T16:14:00.000+02:00

My very first Rails Pull Request!

And meanwhile, you're welcome to copy

The ruby hint of the day: Hash#fetch

2014-01-22T16:42:00.004+02:00

Use hash.fetch(key) instead of hash[key] whenever your Hash is constant and you expect the key to be one of the hash keys — it will raise an exception if not found. Early bug detection you see.

I18n testing outfit for Rails 3.2 (also Rails 4.0-stable)

2014-01-16T14:48:00.003+02:00

Now put this in config/initializers/i18n_test.rb and spec it!

N.B. Curiously enough, a similar technique is needed for 4.0 as well.

P.S. Tested and working with Rails 4.0-stable, yay!

HTTPS in local development environment (with subdomains, stunnel and [optionally] pow and [bonus] iPad)

2013-05-29T15:50:00.000+03:00

In every web developer's life there's a moment your baby wants to go secure, and this means putting your web app on HTTPS. That is, simply put, adding SSL on top of everything. Sounds simple? Well it should be. For production/staging solution you should read your own app hosting provider's docs, e.g. SSL Endpoint | Heroku Dev Center. And for your local dev env, read on (well if you're on OSX or *nix at least).

First, I've found no reason not to use pow, both for same-machine (via http://somesub.yourbaby.dev) and same-network (via http://somesub.yourbaby.192.168.1.111.xip.io) testing.
Tip: even if you don't fancy pow, and use different ports for running stuff instead, you can still use this technique with http://somesub.lvh.me:3000 (same-machine, resolves to 127.0.0.1:3000) or http://somesub.192.168.1.111.xip.io:3000 (same-network, resolves to 192.168.1.111:3000), somesub being any subdomain.

Then, we're going to use stunnel to put that SSL on top of our fine-running web app. So, I've compiled a little script to automate the stunnel certificate + configuration generation, here it is (any patches/comments are welcome). Install/copy it somewhere, then go to your project's directory and run:

stunnelo.sh yourbaby.192.168.1.111.xip.io

Hopefully, it will produce all the necessary files in ./var/stunnel/yourbaby.192.168.1.111.xip.io/

Finally, you may run (in a dedicated terminal window):

stunnel var/stunnel/yourbaby.192.168.1.111.xip.io/stunnel.cnf

then hopefully go to https://anysub.yourbaby.192.168.1.111.xip.io and see your same old app running in total security.

Wait! In a moment you'll notice your browser not being happy about the certificate we've just created, so here's a...

Bonus:
The self-signed certificates this technique creates are obviously will not be trusted by any browser on any device by default. This will get even more messy if your app involves a number of services you're running in the same dev env.
For computers, a browser will usually allow you to install the certificate in question when it sees it, so you will be annoyed just once. For iPads/iPhones — that's what same-network testing is for — you will have to take var/stunnel/yourbaby.192.168.1.111.xip.io/stunnel.crt and mail it to yourself, then open the attachment on your iPad and that's how you install the certificate there and go debugging.
Obviously, you can have any number of such stunnel configs in ./var/stunnel/ — go wild with the domains you are to test.

p.s. I've tried to use tunnels, but it provides no means of control over the certificates and thus, complicated scenarios bring... uh... complications.
p.p.s. Thanks go to xip.io-cert for outlining self-signed certificate generation.

rails 3.2+ controller specs helper for extracting a model object's accessible attributes

2013-01-21T23:06:00.002+02:00

put it in spec/support/accessible_attributes.rb

subdomains in rails apps: a current brief

2012-11-19T01:24:00.001+02:00

Subdomains (or second level domains) are still a nice way to present separate interfaces to a single web app — commonly to give a certain kind of customers the feel-n-touch of a dedicated app install.

Here are most of the related aspects based on a particular Rails3 project:

some model Group, representing a customer, or rather a group of users, has a string column domain (migration not shown, but don’t forget to index by that column)

in app/models/group.rb:

has_many :users
before_validation :downcase_domain, :if => :domain_changed?
validates :domain, presence: true, uniqueness: true, length: {maximum: 255}, format: /^[0-9a-z-]+$/


def host
  "#{domain}.#{ROOT_DOMAIN}"
end


protected
def downcase_domain
  self.domain = domain.to_s.downcase
end

under assumption that you’re using devise and your (group’s) user identity model is User (updated for everchanging devise 2.0.4)

in app/models/user.rb:

belongs_to :group
devise :database_authenticatable, ..., :request_keys => [:app_subdomain]


def self.find_for_authentication(conditions={})
  group = Group.find_by_domain(conditions.delete(:app_subdomain))
  return nil unless group.present?
  conditions[:group_id] = group.id
  super
end

you’ll have some admin interface where the groups are managed (e.g. active_admin, not recommended)

in app/admin/groups.rb:
```
link_to group.domain, root_url(host: group.host)
```
you will certainly want to do something specific in config/routes.rb

you’ll want some handy helper method, to know which guvnor you’re serving

in app/controllers/application_controller.rb:

helper_method :current_group
def current_group
  return @current_group if defined? @current_group
  @current_group = request.app_subdomain && Group.find_by_domain(request.app_subdomain)
end

you’ll need an initializer of some sort to set a constant and monkey-patch the request class, so…

in config/initializers/subdomain.rb:

ROOT_DOMAIN ||= ENV['ROOT_DOMAIN'] or raise "ROOT_DOMAIN must be set"


# (): paranoid monkey patching :()
class ActionDispatch::Request
  def app_subdomain
    return @app_subdomain if defined? @app_subdomain
    @@app_hostname_regex ||= /^(?:([0-9a-z-]+).)?#{Regexp.escape(ROOT_DOMAIN)}$/
    raise 'Wrong domain' unless host.downcase =~ @@app_hostname_regex
    @app_subdomain = $1
  end
end

then, for your production (and staging) environment on, say, heroku, you’ll have to setup your lovely app domain name (with wildcard subdomains) and set the environment variable ROOT_DOMAIN to it
for test environment, which is also good for the handy circleci

in config/environments/test.rb:
```
ROOT_DOMAIN = 'lvh.me'  # yes, it's a magic domain for 127.0.0.1 //smackaho.st RIP
```
for other environment cases, be sure to set either ROOT_DOMAIN or ENV['ROOT_DOMAIN'] as appropriate

if you use factories (and girls, factory_girl)

in spec/factories.rb:

factory :group do
  sequence(:domain) {|n| "dom-#{n}"}  # or better still, use `forgery` with some smart randomness
  ...
end

if you use capybara (2.0.0 at least, recommended) and rspec (rspec-rails 2.12.0 at least)

in spec/spec_helper.rb: (in Spork.prefork block if you use spork, recommended)

Capybara.always_include_port = true  # unless you `visit` external sites in your feature specs

and then in some spec/features/..._spec.rb:

visit("http://some_domain.#{ROOT_DOMAIN}/some_path")
# or
visit(some_url host: @group.host)  # if you're playing dirty, using pre-fabricated data and route helpers, recommended

in some spec/controllers/..._spec.rb you’ll have to include something like this:
```
before(:each) do
  request.host = @group.host
end
```
don’t forget the specs for domains in spec/models/group_spec.rb and other relevant places

May your sub-domains be obedient to their master.

app cache manifest should be public

2012-06-08T14:30:00.000+03:00

As a rule of thumb, as of today, if you don't want trouble, make your HTML5 application cache manifest publicly accessible.

clothing labels hell

2012-05-13T15:54:00.000+03:00

One of the things that have been annoying me for years — not Google, but rather vaguely related to the information technologies — are the clothing labels.
They are mostly made of highly skin-irritating fabric, and they tend to outlive any piece of clothing they are super-securely attached to.

Why???

Buggers Must Die

2012-05-10T16:28:00.000+03:00

It is somewhat pathetic to criticise Google, a company which always strives to do what's best for us simple people — for free!
But.
I think they've just crossed the line with the “New Gmail Look”.

BTW, I hope you understand the irony of the first line: I really don't think I must feel obliged for their “free” email service — however good and accessible it is; quite the contrary, I feel I'm contributing to Google an irreplaceable and precious source of real-time information — the stuff the most world's (and certainly Google's) money comes from.

Personal opinions and tastes aside, the New Gmail Look is effectively incompatible with Mozilla Firefox — I know nothing of its compatibility with the new “good” Internet Explorer, unfortunately — and is clearly (cleverly) targeted for Google Chrome. To be clear, Gmail is functional in FF, but its CPU consumption there makes the combination unusable.
This is not something new or unexpected, both FF and Gmail have undergone development with this problem known — there are discussions, bug reports and blog posts like this one all over the internets — and I've been hoping a solution will be found before the New Look would become the only look, but alas, ah-ah, nope. At this moment, I have my peaceful internet existence violated and I feel forced to use the Chrome: Safari is also okay wrt Gmail, but it hasn't got nearly as much plugins as Chrome or especially Firefox have, so not much choice for a single-browser setup.

I don't think it's a fact to be taken lightly. I see something much worse than Microsoft coming, and I personally will now always try not to use Google products as the first option. Luckily, most alternatives to Google products actually outperform the latter.

Erm, yes, this blog will also be moved to a different provider in the nearest future.

p.s. Unrelated, kudos to Apple for making the choice of English flavour finally available system-wide. Alleluia!

google trance-laid he-brew

2012-05-09T15:53:00.000+03:00

It's always fun to see automatic translation, but watching google trying to translate Hebrew is twice as fun: modern-day residents of the holy land don't use diacritics (= no vowel signs), the language does not have capital letters or much punctuation, and on top of that, Israeli names — both first and family ones — are very often just common words. Now you can imagine the level of ambiguity linguistic tools have to deal with here. And I have not even mentioned the abundance of foreign words which sometimes make writing hard to comprehend by even a native human reader.

pow, guard and rdebug - staying in the web app dev env heaven: for ruby 1.9 only

2012-04-03T00:44:00.004+03:00

The new version (for ruby 2.1) is here.

If you, like me, use pow and guard (with spork of Rails 3 standard setup) for the perfect web app development environment, you might have stumbled upon a problem of debugging the server with rdebug -c which tends to connect to a wrong process even when working on just one project (and that's because spork itself starts the remote debug server by default).

So, firstly, you will probably want to limit your server instances run by pow to 1 by
echo export POW_WORKERS=1 >> ~/.powconfig

Then, to actually enable remote debugging you should place the following in your ./config/environments/development.rb:

And finally, to set the port of your choice for the project,
echo export RUBY_DEBUG_PORT=10007 >> ./.powenv

Now, you are welcome to
touch tmp/restart.txt
and (after a bunch of your CPU's cycles)
rdebug -c -p 10007

You're back in heaven, have a happy stay!

>>~/.bashrc (yet another update)

2011-12-30T14:37:00.002+02:00

An update of mines!: >>.bashrc (update):

>>~/.bashrc (update)

2011-08-20T05:43:00.003+03:00

An update of mines!: >>.bashrc:

This is a drop-out replacement for cd:
0) pd DIR == cd DIR (plus push to the shell's dir stack, plus store DIR as LAST_DIR)
1) pd == pop a dir from the stack (the shell's BACK button)
1.1) if none, pd LAST_DIR (useful for new shell sessions after pd DIR or pd . in an old one)

p.s. Thanks to Vitaly@astrails for the idea on improvement.
p.p.s. fixed!

Time-buffered WUI update /javascript

2011-06-26T15:27:00.004+03:00

When it comes to UI (and it naturally comes to js), there often are routines that you would like to perform on a certain event, but not necessarily on each such event, that is, just enough to keep a view updated at most times.
For instance, there are items being added to a sorted list: you'd like to sort the list whenever a new item arrives, but when a bunch of items arrive at once (over a short period of time), you'd like to postpone sorting to the last item in the bunch (for obvious reasons). And you want to keep things simple and refrain from event queuing, optimizing the sort routine and other complex stuff.
Well, in that case, something I call time buffering may help you. If your event handler looks like this:

function _onNewItem(item) {
 _addItem(item);
 _sortList();
}

With time buffering it'll look like this:

function _onNewItem(item) {
 _addItem(item);
 _timeBuffer("sort_list", _sortList, 500, 2000);
}

Not much of a change, eh? And the killer routine?

I'm sure you can fix my style (you're welcome) and add support for removing such list elements -- and associated actions -- cleanly (with something like function _timeBufferNoMore(act)), but you get the idea.

the boolean virtual attribute's gotcha (a checkbox in a rails form)

2011-06-24T19:14:00.001+03:00

I am not sure where to post this, suggestions are welcome.

Whenever you create a virtual boolean attribute in your model, e.g.

attr_writer :some_boolean
def some_boolean; defined?(@some_boolean) ? @some_boolean : true; end  # defaults to true
attr_accessible :some_boolean

And make it a checkbox in the model's input form, e.g. (simple_form, haml)

!= f.input :some_boolean, :as => :boolean

And try to do some reasoning with it, e.g...

after_create { ... if @some_boolean }

You may be surprised as @some_boolean will always resolve to true (actually to 0/1, but both are true in Ruby).

A quick and dirty workaround would be... well... getting your controller dirty quickly:

before_filter :boolean_fix
...
def boolean_fix
  params[:some_model][:some_boolean] = false if params[:some_model] && params[:some_model][:some_boolean] == '0'
end

acts_as_taggable_on meets thinking_sphinx on rails (and nearly misses it)

2011-03-26T16:10:00.001+02:00

Beware, for reasons unknown, instead of
indexes tags.name, :as => :tags
you have to write
indexes taggings.tag.name, :as => :tags
or you'll get too many results.

jQuery autoSuggest vs rails (and acts_as_taggable_on)

2011-03-26T16:03:00.001+02:00

While AutoSuggest is quite wonderful as it is, there's also a lot of room for improvement (e.g. I've started using this fork since the original author doesn't seem too community-friendly).

Here's one tip on how to use it with rails (and simple_form) — or rather how to workaround the following issue.
When you write something like $("#post_tag_list").autoSuggest(...); for the first time, you'll expect AS to do all the wow stuff on the client side and have the original input field with the values as a parameter back on the server side, right?
Well, I did.
Unfortunately, you have to work harder: not only you must include the asHtmlID: "tag_list" option in the autoSuggest parameters, but (since that option actually defines the id's suffix only) you'll have to patch your controller allong the lines of:
before_filter :autosuggest_fix
and

def autosuggest_fix

params[:post][:tag_list] = params[:as_values_tag_list] if params[:post]

end

a jQuery templates tip: checking for optional fields

2011-03-26T15:38:00.000+02:00

One tip regarding the templates

“Comments for this page are closed.” for some reason, so here:
When rendering an optional numerical field, the safest way to check on its existence is:
{{if typeof $item.data.optional_field == "number"}}...{{/if}}
(for other types, change the right side of the == accordingly)

The main problem with the way described in the doc is possible accidental name collision of the field's name with some other variable in the scope.

Arrayize

2011-03-02T10:52:00.000+02:00

Array(x) is syntax cool, it will return an empty array for nil, a one-item array for an item, and a copy of the array for an array.

google woes again

2011-02-03T11:05:00.000+02:00

now this has exceeded all possible definitions of a suck, it's a deepthroat we have here!

after kindly suggesting to “Get Gears now” — while in calendar (@Chrome), google gives me “Gears for Mac OS Snow Leopard: Your browser is not supported”. And it's their Microsoft-inpired browser! And still no HTML5 in sight (see the date of the post linked above). Bummer!

Well, I guess it's the google's support for Apple's iCal.