Tuesday, April 26, 2016

Localhost Proxy ngrok Help

   ngrok - tunnel local ports to public URLs and inspect traffic

    ngrok exposes local networked services behinds NATs and firewalls to the
    public internet over a secure tunnel. Share local websites, build/test
    webhook consumers and self-host personal services.
    Detailed help for each command is available with 'ngrok help '.
    Open http://localhost:4040 for ngrok's web interface to inspect traffic.

    ngrok http 80                    # secure public URL for port 80 web server
    ngrok http -subdomain=baz 8080   # port 8080 available at baz.ngrok.io
    ngrok http foo.dev:80            # tunnel to host:port instead of localhost
    ngrok tcp 22                     # tunnel arbitrary TCP traffic to port 22
    ngrok tls -hostname=foo.com 443  # TLS traffic for foo.com to port 443
    ngrok start foo bar baz          # start tunnels from the configuration file


  inconshreveable -

   authtoken    save authtoken to configuration file
   credits    prints author and licensing information
   http        start an HTTP tunnel
   start    start tunnels by name from the configuration file
   tcp        start a TCP tunnel
   test        test ngrok service end-to-end
   tls        start a TLS tunnel
   update    update ngrok to the latest version
   version    print the version string
   help        Shows a list of commands or help for one command

Monday, April 25, 2016

Tool to deploy static sites to GAE

GAE Static Tool
GAE Static Site Template Use this as the starter template for your static sites. Images and CSS are go in www/assets folder. Feel free to delete folder1 if you don't need it. The html pages go in the www folder. You can customize the app.yaml according to your needs.

Saturday, April 23, 2016

How to check the version of Sphinx

$ searchd --help
Sphinx 2.2.10-id64-release (2c212e0)
Copyright (c) 2001-2015, Andrew Aksyonoff
Copyright (c) 2008-2015, Sphinx Technologies Inc (http://sphinxsearch.com)

Usage: searchd [OPTIONS]

Options are:
-h, --help display this help message
-c, --config read configuration from specified file
(default is sphinx.conf)
--stop send SIGTERM to currently running searchd
--stopwait send SIGTERM and wait until actual exit
--status get ant print status variables
(PID is taken from pid_file specified in config file)
--iostats log per-query io stats
--strip-path strip paths from stopwords, wordforms, exceptions
and other file names stored in the index header
extra binary log replay options (the only current one
is 'accept-desc-timestamp')

Debugging options are:
--console run in console mode (do not fork, do not log to files)
-p, --port listen on given port (overrides config setting)
-l, --listen listen on given address, port or path (overrides
config settings)
-i, --index only serve given index(es)
--nodetach do not detach into background
--logdebug, --logdebugv, --logdebugvv
enable additional debug information logging
(with different verboseness)
--pidfile force using the PID file (useful with --console)
--safetrace only use system backtrace() call in crash reports

searchd --config /usr/local/sphinx/etc/sphinx.conf

git ls-files help

~/projects/lafon $git ls-files --junk 
error: unknown option `junk'
usage: git ls-files [] [...]

    -z                    paths are separated with NUL character
    -t                    identify the file status with tags
    -v                    use lowercase letters for 'assume unchanged' files
    -c, --cached          show cached files in the output (default)
    -d, --deleted         show deleted files in the output
    -m, --modified        show modified files in the output
    -o, --others          show other files in the output
    -i, --ignored         show ignored files in the output
    -s, --stage           show staged contents' object name in the output
    -k, --killed          show files on the filesystem that need to be removed
    --directory           show 'other' directories' names only
    --empty-directory     don't show empty directories
    -u, --unmerged        show unmerged files in the output
    --resolve-undo        show resolve-undo information
    -x, --exclude
                          skip files matching pattern
    -X, --exclude-from
                          exclude patterns are read from
                          read additional per-directory exclude patterns in
    --exclude-standard    add the standard git exclusions
    --full-name           make the output relative to the project top directory
    --error-unmatch       if any is not in the index, treat this as an error
                          pretend that paths removed since are still present
    --abbrev[=]        use digits to display SHA-1s
    --debug               show debugging data

Friday, April 22, 2016

ImageMagick Help

Version: ImageMagick 6.9.1-0 Q16 x86_64 2015-03-22 http://www.imagemagick.org
Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: DPC OpenCL
Delegates (built-in): bzlib fftw jng jpeg lcms lzma png tiff webp xml zlib

Usage: convert [options ...] file [ [options ...] file ...] [options ...] file

Image Settings:
  -adjoin              join images into a single multi-image file
  -affine matrix       affine transform matrix
  -alpha option        activate, deactivate, reset, or set the alpha channel
  -antialias           remove pixel-aliasing
  -authenticate password
                       decipher image with this password
  -attenuate value     lessen (or intensify) when adding noise to an image
  -background color    background color
  -bias value          add bias when convolving an image
                       use black point compensation
  -blue-primary point  chromaticity blue primary point
  -bordercolor color   border color
  -caption string      assign a caption to an image
  -channel type        apply option to select image channels
  -clip-mask filename  associate a clip mask with the image
  -colors value        preferred number of colors in the image
  -colorspace type     alternate image colorspace
  -comment string      annotate image with comment
  -compose operator    set image composite operator
  -compress type       type of pixel compression when writing the image
  -define format:option
                       define one or more image format options
  -delay value         display the next image after pausing
  -density geometry    horizontal and vertical density of the image
  -depth value         image depth
  -direction type      render text right-to-left or left-to-right
  -display server      get image or font from this X server
  -dispose method      layer disposal method
  -dither method       apply error diffusion to image
  -encoding type       text encoding type
  -endian type         endianness (MSB or LSB) of the image
  -family name         render text with this font family
  -fill color          color to use when filling a graphic primitive
  -filter type         use this filter when resizing an image
  -font name           render text with this font
  -format "string"     output formatted image characteristics
  -fuzz distance       colors within this distance are considered equal
  -gravity type        horizontal and vertical text placement
  -green-primary point chromaticity green primary point
  -intensity method    method to generate intensity value from pixel
  -intent type         type of rendering intent when managing the image color
  -interlace type      type of image interlacing scheme
  -interline-spacing value
                       set the space between two text lines
  -interpolate method  pixel color interpolation method
  -interword-spacing value
                       set the space between two words
  -kerning value       set the space between two letters
  -label string        assign a label to an image
  -limit type value    pixel cache resource limit
  -loop iterations     add Netscape loop extension to your GIF animation
  -mask filename       associate a mask with the image
  -matte               store matte channel if the image has one
  -mattecolor color    frame color
  -moments             report image moments
  -monitor             monitor progress
  -orient type         image orientation
  -page geometry       size and location of an image canvas (setting)
  -ping                efficiently determine image attributes
  -pointsize value     font point size
  -precision value     maximum number of significant digits to print
  -preview type        image preview type
  -quality value       JPEG/MIFF/PNG compression level
  -quiet               suppress all warning messages
  -red-primary point   chromaticity red primary point
  -regard-warnings     pay attention to warning messages
  -remap filename      transform image colors to match this set of colors
  -respect-parentheses settings remain in effect until parenthesis boundary
  -sampling-factor geometry
                       horizontal and vertical sampling factor
  -scene value         image scene number
  -seed value          seed a new sequence of pseudo-random numbers
  -size geometry       width and height of image
  -stretch type        render text with this font stretch
  -stroke color        graphic primitive stroke color
  -strokewidth value   graphic primitive stroke width
  -style type          render text with this font style
  -support factor      resize support: > 1.0 is blurry, < 1.0 is sharp
  -synchronize         synchronize image to storage device
  -taint               declare the image as modified
  -texture filename    name of texture to tile onto the image background
  -tile-offset geometry
                       tile offset
  -treedepth value     color tree depth
  -transparent-color color
                       transparent color
  -undercolor color    annotation bounding box color
  -units type          the units of image resolution
  -verbose             print detailed information about the image
  -view                FlashPix viewing transforms
  -virtual-pixel method
                       virtual pixel access method
  -weight type         render text with this font weight
  -white-point point   chromaticity white point

Image Operators:
  -adaptive-blur geometry
                       adaptively blur pixels; decrease effect near edges
  -adaptive-resize geometry
                       adaptively resize image using 'mesh' interpolation
  -adaptive-sharpen geometry
                       adaptively sharpen pixels; increase effect near edges
  -alpha option        on, activate, off, deactivate, set, opaque, copy
                       transparent, extract, background, or shape
  -annotate geometry text
                       annotate the image with text
  -auto-gamma          automagically adjust gamma level of image
  -auto-level          automagically adjust color levels of image
  -auto-orient         automagically orient (rotate) image
  -bench iterations    measure performance
  -black-threshold value
                       force all pixels below the threshold into black
  -blue-shift factor   simulate a scene at nighttime in the moonlight
  -blur geometry       reduce image noise and reduce detail levels
  -border geometry     surround image with a border of color
  -bordercolor color   border color
  -brightness-contrast geometry
                       improve brightness / contrast of the image
  -canny geometry      detect edges in the image
  -cdl filename        color correct with a color decision list
  -charcoal radius     simulate a charcoal drawing
  -chop geometry       remove pixels from the image interior
  -clamp               keep pixel values in range (0-QuantumRange)
  -clip                clip along the first path from the 8BIM profile
  -clip-path id        clip along a named path from the 8BIM profile
  -colorize value      colorize the image with the fill color
  -color-matrix matrix apply color correction to the image
  -connected-components connectivity
                       connected-components uniquely labeled
  -contrast            enhance or reduce the image contrast
  -contrast-stretch geometry
                       improve contrast by `stretching' the intensity range
  -convolve coefficients
                       apply a convolution kernel to the image
  -cycle amount        cycle the image colormap
  -decipher filename   convert cipher pixels to plain pixels
  -deskew threshold    straighten an image
  -despeckle           reduce the speckles within an image
  -distort method args
                       distort images according to given method ad args
  -draw string         annotate the image with a graphic primitive
  -edge radius         apply a filter to detect edges in the image
  -encipher filename   convert plain pixels to cipher pixels
  -emboss radius       emboss an image
  -enhance             apply a digital filter to enhance a noisy image
  -equalize            perform histogram equalization to an image
  -evaluate operator value
                       evaluate an arithmetic, relational, or logical expression
  -extent geometry     set the image size
  -extract geometry    extract area from image
  -features distance   analyze image features (e.g. contrast, correlation)
  -fft                 implements the discrete Fourier transform (DFT)
  -flip                flip image vertically
  -floodfill geometry color
                       floodfill the image with color
  -flop                flop image horizontally
  -frame geometry      surround image with an ornamental border
  -function name parameters
                       apply function over image values
  -gamma value         level of gamma correction
  -gaussian-blur geometry
                       reduce image noise and reduce detail levels
  -geometry geometry   preferred size or location of the image
  -grayscale method    convert image to grayscale
  -hough-lines geometry
                       identify lines in the image
  -identify            identify the format and characteristics of the image
  -ift                 implements the inverse discrete Fourier transform (DFT)
  -implode amount      implode image pixels about the center
  -interpolative-resize geometry
                       resize image using 'point sampled' interpolation
  -kuwahara geometry   edge preserving noise reduction filter
  -lat geometry        local adaptive thresholding
  -level value         adjust the level of image contrast
  -level-colors color,color
                       level image with the given colors
  -linear-stretch geometry
                       improve contrast by `stretching with saturation'
  -liquid-rescale geometry
                       rescale image with seam-carving
  -magnify             double the size of the image with pixel art scaling
  -mean-shift geometry delineate arbitrarily shaped clusters in the image
  -median geometry     apply a median filter to the image
  -mode geometry       make each pixel the 'predominant color' of the
  -modulate value      vary the brightness, saturation, and hue
  -monochrome          transform image to black and white
  -morphology method kernel
                       apply a morphology method to the image
  -motion-blur geometry
                       simulate motion blur
  -negate              replace every pixel with its complementary color
  -noise geometry      add or reduce noise in an image
  -normalize           transform image to span the full range of colors
  -opaque color        change this color to the fill color
  -ordered-dither NxN
                       add a noise pattern to the image with specific
  -paint radius        simulate an oil painting
  -perceptible epsilon
                       pixel value less than |epsilon| become epsilon or
  -polaroid angle      simulate a Polaroid picture
  -posterize levels    reduce the image to a limited number of color levels
  -profile filename    add, delete, or apply an image profile
  -quantize colorspace reduce colors in this colorspace
  -radial-blur angle   radial blur the image (deprecated use -rotational-blur
  -raise value         lighten/darken image edges to create a 3-D effect
  -random-threshold low,high
                       random threshold the image
  -region geometry     apply options to a portion of the image
  -render              render vector graphics
  -repage geometry     size and location of an image canvas
  -resample geometry   change the resolution of an image
  -resize geometry     resize the image
  -roll geometry       roll an image vertically or horizontally
  -rotate degrees      apply Paeth rotation to the image
  -rotational-blur angle
                       rotational blur the image
  -sample geometry     scale image with pixel sampling
  -scale geometry      scale the image
  -segment values      segment an image
  -selective-blur geometry
                       selectively blur pixels within a contrast threshold
  -sepia-tone threshold
                       simulate a sepia-toned photo
  -set property value  set an image property
  -shade degrees       shade the image using a distant light source
  -shadow geometry     simulate an image shadow
  -sharpen geometry    sharpen the image
  -shave geometry      shave pixels from the image edges
  -shear geometry      slide one edge of the image along the X or Y axis
  -sigmoidal-contrast geometry
                       increase the contrast without saturating highlights or
  -sketch geometry     simulate a pencil sketch
  -solarize threshold  negate all pixels above the threshold level
  -sparse-color method args
                       fill in a image based on a few color points
  -splice geometry     splice the background color into the image
  -spread radius       displace image pixels by a random amount
  -statistic type geometry
                       replace each pixel with corresponding statistic from the
  -strip               strip image of all profiles and comments
  -swirl degrees       swirl image pixels about the center
  -threshold value     threshold the image
  -thumbnail geometry  create a thumbnail of the image
  -tile filename       tile image when filling a graphic primitive
  -tint value          tint the image with the fill color
  -transform           affine transform image
  -transparent color   make this color transparent within the image
  -transpose           flip image vertically and rotate 90 degrees
  -transverse          flop image horizontally and rotate 270 degrees
  -trim                trim image edges
  -type type           image type
  -unique-colors       discard all but one of any pixel color
  -unsharp geometry    sharpen the image
  -vignette geometry   soften the edges of the image in vignette style
  -wave geometry       alter an image along a sine wave
  -white-threshold value
                       force all pixels above the threshold into white

Image Sequence Operators:
  -append              append an image sequence
  -clut                apply a color lookup table to the image
  -coalesce            merge a sequence of images
  -combine             combine a sequence of images
  -compare             mathematically and visually annotate the difference between an image and its reconstruction
  -complex operator    perform complex mathematics on an image sequence
  -composite           composite image
  -crop geometry       cut out a rectangular region of the image
  -deconstruct         break down an image sequence into constituent parts
  -evaluate-sequence operator
                       evaluate an arithmetic, relational, or logical expression
  -flatten             flatten a sequence of images
  -fx expression       apply mathematical expression to an image channel(s)
  -hald-clut           apply a Hald color lookup table to the image
  -layers method       optimize, merge, or compare image layers
  -morph value         morph an image sequence
  -mosaic              create a mosaic from an image sequence
  -poly terms          build a polynomial from the image sequence and the corresponding
                       terms (coefficients and degree pairs).
  -print string        interpret string and print to console
  -process arguments   process the image with a custom image filter
  -separate            separate an image channel into a grayscale image
  -smush geometry      smush an image sequence together
  -write filename      write images to this file

Image Stack Operators:
  -clone indexes       clone an image
  -delete indexes      delete the image from the image sequence
  -duplicate count,indexes
                       duplicate an image one or more times
  -insert index        insert last image into the image sequence
  -reverse             reverse image sequence
  -swap indexes        swap two images in the image sequence

Miscellaneous Options:
  -debug events        display copious debugging information
  -distribute-cache port
                       distributed pixel cache spanning one or more servers
  -help                print program options
  -list type           print a list of supported option arguments
  -log format          format of debugging information
  -version             print version information

By default, the image format of `file' is determined by its magic
number.  To specify a particular image format, precede the filename
with an image format name and a colon (i.e. ps:image) or specify the
image type as the filename suffix (i.e. image.ps).  Specify 'file' as
'-' for standard input or output.

Wednesday, April 20, 2016

RubyPlus Podcast 3

Top Links for April 27

1. [Go faster - Benchmarks for your whole Rails app](https://github.com/schneems/derailed_benchmarks 'Go faster - Benchmarks for your whole Rails app')

Tools to benchmark a Rails app. It consists of:

    Static Benchmarking
    Memory used at require time
    Objects created at require time
    Dynamic app benchmarking
    Detecting memory leaks
    Dissecting a memory leak
    Get a heap dump
    My app is slow
    Memory is large at boot
    Is this perf change faster?

2. [Ability to add database comments](https://github.com/rails/rails/pull/22911 'Ability to add database comments')

It is possible to specify comments for tables, columns, and indexes in the database itself now with this addition. It currently works for MySQL and PostgreSQL adapters.

3. [`create_join_table` works with non-integer column types](https://github.com/rails/rails/pull/24221 'create_join_table works with non-integer column types')

Creating a join table with create_join_table helper used to always create the columns with integer type. But now if you want to have uuid columns or any other type, it's possible!

4. [15 Fundamental Laws of Software Development]( http://www.exceptionnotfound.net/fundamental-laws-of-software-development/ '15 Fundamental Laws of Software Development') by Matthew Jones

Linus's Law : "Given enough eyeballs, all bugs are shallow."

Occam's Razor : "Among competing hypotheses, the one with the fewest assumptions should be selected."

Hanlon's Razor : Don't assume people are malicious; assume they are ignorant, and then help them overcome that ignorance. Most people want to learn, not be mean for the fun of it.

The Pareto Principle : Have you even been in a situation where your app currently has hundreds of errors, but when you track down one of the problems, a disproportionate amount of said errors just up and vanish? If you have (and you probably have), then you've experienced the Pareto Principle in action. Many of the problems we see, whether coding, dealing with customers, or just living our lives, share a small set of common root issues that, if solved or alleviated, can cause most or all of the problems we see to disappear.

In short, the fastest way to solve many problems at once is the find and fix their common root cause.

Postel's Law : "Be conservative in what you do, be liberal in what you accept from others."

Hofstadter's Law : Nothing ever goes as planned, so you're better off putting extra time in your estimates to cover some thing that will go wrong, because it unfailingly does.

The 90-90 Rule : "The first 90 percent of the code accounts for the first 90 percent of the development time. The remaining 10 percent of the code accounts for the other 90 percent of the development time."

Parkinson's Law : "Work expands so as to fill the time available for its completion."

Dunning-Kruger Effect : "Unskilled persons tend to mistakenly assess their own abilities as being much more competent than they actually are."

5. Ruby 2.3.1 Released: A Bugfix Release. Minor bugfixes, no security fixes.

6. [How to Specify Local Ruby Gems in Your Gemfile](https://rossta.net/blog/how-to-specify-local-ruby-gems-in-your-gemfile.html 'Specify Local Ruby Gems') by Ross Kaffenberger

A look at using the bundle config command to develop against local gems instead of specifying a :path option in your Gemfile.

7. [A Guide to Ruby Gem Post-Install Messages](http://brandonhilkert.com/blog/ruby-gem-post-install-message/ 'Gem Post-Install Messages') by Brandon Hilkert

As gem authors, one of the ways we can provide important information to users of our gems is through post-install messages. This article explores what they are, how to set them up, what to include and when to use them.

8. [Unobtrusive JavaScript via AJAX in Rails](https://blog.codeship.com/unobtrusive-javascript-via-ajax-rails/ 'Unobtrusive JavaScript via AJAX') by Daniel P. Clark

9. [Ruby for Good](http://rubyforgood.org 'Ruby Event'): A Practical Ruby Event in Washington DC, June 16-19
The goal is to build projects that help local communities.

10. [Goruco 2016](http://goruco.com/ 'Ruby Conference')
A One Day Ruby Conference in NYC, June 25th.

11. [Rails 5: What's in It for Me?](https://www.youtube.com/watch?v=ECDX1NH7yWE 'Rails 5') video
An hour long presentation on Rails 5. Check out the podcasts section of rubyplus.com for the link.

12. [Rails 5 officially supports MariaDB](http://blog.bigbinary.com/2016/04/21/rails-5-official-supports-mariadb.html 'Rails 5 officially supports MariaDB') by Vipul

MariaDB is an open source fork of the MySQL database and it acts as a drop-in replacement for MySQL. After the Oracle’s take over of MySQL there was some confusion about the future of MySQL. To remove any ambiguity about whether in future MySQL will remain free or not MariaDB was started. To learn about the advantages MariaDB offers over MySQL checkout the podcasts section for the link to an article which lists 10 reasons to migrate to MariaDB from MySQL.

[Top 10 Reasons to Migrate to MariaDB](https://seravo.fi/2015/10-reasons-to-migrate-to-mariadb-if-still-using-mysql 'Top 10 Reasons to Migrate to MariaDB')

Sunday, April 10, 2016

Timeline of Products

2002 Passed UML Certification in May
2003 OOAD Certification Book and Videos $40. Clickbank
2004 a1-truckparts.net                       Adsense
     Started Programming Blog
2005 Static sites like problemsolvingskills.net hosted on hostmysite.com.
2006 Started to work with Rails
2007 12-12 rubyplus.org registered
     12-02 rubyplus.com registered
     Take over Silicon Valley Ruby Meetup
2008 rubyplus.org Jan  29 episodes
     May 2008 Over 75 Rails screencasts According to http://readwrite.com/2008/05/28/15_places_to_find_great_screencasts/
2009 First iPhone App Goes Live
2010 British Accent iPhone App, 3/10 iPad App approved
2011 Finance Site : $10k on content creation goes waste without any adsense revenue. $10k spent in demolition recycling research.
2012 TDD Workshops, In dec, registered clickplan.net
2013 rubyplus.com goes live
     clickplan.net goes live
     Jan clickplan.info blog goes live
2014 Upgrading Rails version and TB3 takes fucking too long and clickplan.net goes offline.
2015 TDD Course and Email Blast for rubyplus.com launch (Replusion vs Attraction), 3/15 TDD Course free coupon Tweets. Jan TDD in Ruby Kindle book published.

2007 July : Outdoor Adventure Club Event Management
2008  or 2009 Abandoned adventurelogic.net ?

Started selling ebooks and videos before the term screencast was coined in 2004. UML certification study guide sold from 2003 to 2006 for $49.99 ooad package and $17 test package.

Dot 1 : 2003

Selling ebook and videos using eBookPro and ClickBank. Learned about order processing and the end to end usage of digital products.

Dot 2 : 2005

Buying AssocTrac to manage affiliates. Learned about how the affiliate management software works and how to track the effectiveness of marketing campaigns. problemsolvingskills.net. Mistake: Developing the product before building the audience. Promotional posts on forums sounded spammy.

Dot 3 : 2007

Launched rubyplus.org. Screencasting with no time limitation and no continuous improvement. No lesson learned.

Dot 4 : 2010

First Mobile app hit. Learned about the power of the Internet in driving sales and the lifetime value of a customer.

Dot 5 : 2011

Read Millionaire in the Fast Lane. Learned how to apply filters to all the business ideas and narrow down to the most promising ideas to execute. 

Fastlane education is about learning specific skills to grow your business skill. Slowlane education is about increasing the intrinsic value of the person being educated.

It opened up the possibility. What if, I could increase my intrinsic skills and use that as the core of my business plan? I can teach other developers how to increase their intrinsic value. If I can help other developers make a six figure income, I can make million a year.

Dot 6 : 2013

First version of ClickPlan goes live. Infopreneur business success template. Learned that SaaS is very similar to selling infoproducts. It differs only in one aspect, the backend sales is not infoproduct but is a software that solves problems.

Dot 7 : 2016

Learned that consistently publishing video podcast that applies time limitation can be very effective in building an audience. Observing other players on how they apply Robert Cialdini's Principles of Persuasion.

It is too much effort to market 1-1. Focus on 1-N. Tweeting to each individual takes more time and money than targeting a few who can share the content with their followers.

Making the Connections

Dot 1 and 2 were the big picture view of the infopreneur business. Dot 4 is the technical 'How to' aspect of creating the product for that market. Dot 5 is the big picture of building a successful SaaS business.

Connect Dot 1-2-4 : 2013
Connect Dot 3-6 : 2016

Missing Pieces / Obstacles

Demo video. Marketing
Dot 4 - Implementation ...
Distracted by Learn Startup crap.

Creating a Rails Engine for jQuery Plugin

Notes from sitepoint.com:

bundle gem pnotifier
Outside the gem directory, create a sample app.

rails new pnotifier

rails g controller site index

gem 'image_zoomer', '0.0.1', path: '/Users/bparanj/work/projects/pnotifier/'

Edit the app/views/site/index.html.erb, replace the content with

<%= Pnotifier::VERSION %>

Start the server and visit http://localhost:3000/site/index. You will see 0.0.1

Create app/assets/javascripts in the gem's root directory. Go to the pnotify plugin Github page https://github.com/sciactive/pnotify/tree/master/dist and grab pnotify.js and place it in the app/assets/javascripts directory.

Create a engine.rb file in lib/pnotifier directory and paste the following code:

module Pnotifer
 class Engine < Rails::Engine

In the dummy Rails application open app/assets/javascripts/application.js and append:

//= require pnotifier

Restart the server. Refresh the page.
Open lib/notifier.rb in the gem and paste:

require 'pnotifier/engine'

Restart the server and refresh the browser.
View page source. You will see script tag referencing pnotifier.js.

Create pnotifier_main.js in app/assets/javascripts directory in the gem and paste:

//= require_tree .

Open app/assets/javascripts/application.js in Rails app and replace //= require pnotifier with:

//= require pnotifier_main

Restart the web server, refresh the browser and view page source. Both javascript files from the gem will be there.

Create a file pnotifier_initializer.js in app/assets/javascripts with:

    new PNotify({
        title: 'Regular Notice',
        text: 'Check me out! I\'m a notice.'

Refresh the browser. You will the see notifier appear and disappear after some time.

Friday, April 08, 2016

Merge and Reverse Merge

Merge in Ruby works like this:
> options = { buy: true }
 => {:buy=>true}
> options.merge! when: :tomorrow
 => {:buy=>true, :when=>:tomorrow}
> options
 => {:buy=>true, :when=>:tomorrow}
> options.merge! buy: false
 => {:buy=>false, :when=>:tomorrow}
> options
 => {:buy=>false, :when=>:tomorrow}
> options.merge! :when => :today
 => {:buy=>false, :when=>:today}
Reverse Merge in Rails works like this:
 rails c
Loading development environment (Rails 5.0.0.beta3)
 > options = { buy: true }
 => {:buy=>true} 
 > options.reverse_merge! when: :tomorrow
 => {:buy=>true, :when=>:tomorrow} 
 > options
 => {:buy=>true, :when=>:tomorrow} 
 > options.reverse_merge! buy: false
 => {:buy=>true, :when=>:tomorrow} 
 > options
 => {:buy=>true, :when=>:tomorrow} 
 > options.reverse_merge! :when => :today
 => {:buy=>true, :when=>:tomorrow} 

Customize IRB Console

Create ~/.irbrc with:
 IRB.conf[:PROMPT][:MY_PROMPT] = { 
   :AUTO_INDENT => true,
   :PROMPT_I => '> ',               
   :PROMPT_S => nil,              
   :PROMPT_C => nil,             
   :RETURN => " => %s\n"     
This prompt is cleaner. It does not display the ruby version and the line number on each line. Read the Ruby IRB docs.

Thursday, April 07, 2016

Analyzing the Production Log file in Rails 5

Create reports based on your log files. Supports Rails, Apache, MySQL, Delayed::Job, and other formats. 1. gem install request-log-analyzer 2. request-log-analyzer log/production.log Reference Request Log Analyzer

Top Links for Apr 14, 2016

1. Get Your Conference Proposal Accepted by Richard Schneeman.
2. Whitelisting with the lesser-known #presence_in method by Damir Svrtan
3. 9th Rubyconf BrasilRubyconf Brasil has established itself as the largest Ruby conference in Latin America. In 2015 they had more than 1,100 attendees. Well known speakers such as Chad Fowler, David Black, Scott Chacon, Chris Wanstrath, Josh Kalderimis, Koichi Sasada, Charles Nutter, and dozens of others have spoken at our conference. This is your chance to showcase your expertise. Rubyconf Brasil will be at São Paulo, Brazil. The dates are confirmed for September, 23th and 24th so book your flight and hotel right away!
4. Face Recognition using Google Cloud Vision API
5. Ruby Frozen String Literals Do Not Result in Any Performance Improvement by Alexander Dymo  
Reference Prototypical Conference Talks

Mountain West  Ruby 2016 videos
Writing a Test Framework From Scratch by Ryan Davis
Drifting Ruby Screencasts

Short URLs Considered Harmful for Cloud Services

Use techniques such as CAPTCHAs to separate human users from automated scanners. I cover how to use Google reCATCHA with Rails 5.


Saturday, April 02, 2016

Specifying Image Dimensions in Markdown

You can use the image tag with custom CSS to specify the width and max-height like this:

<img src="https://2.bp.blogspot.com/-N0kZ1K9a86s/VobDaEQBp4I/AAAAAAAAA-8/eUSv6dKkgBk/s1600/color-blind5.png" alt="Ruby Plus" style="border: 1px solid #000; max-width:700px; max-height:600px;"/>
This will work if you are using Markdown to render page in a Rails app.

Throttling Network using Chrome