RUBY ON RAILS

How to integrate google maps with rails using ym4r _gm plugin

2009-10-09T07:01:00.001-07:00

step 1:
first you need to install the plugin like this
railsapp>

ruby script/plugin install svn://rubyforge.org/var/svn/ym4r/Plugins/GM/trunk/ym4r_gm

step 2:

put ym4r-gm.js file in javascripts directory(search in ym4r-gm plugin for js file)

step 3:

get googlemaps_api_key.yml file and put it in config folder(which consists of google maps api key)

step 4:

Mention like this in your controller which you want gmaps

require 'ym4r/google_maps/geocoding'
require 'rubygems'

require 'google_geocode'

step 5:
In the view you need to mention like this otherwise it wont work:


  <%= GMap.header %>
(application.rhtml)

<%= @map.to_html %>                                     
<%= @map.div(:width => 600,

:height => 400) %>(the view which u want)

step  6:

Mention like this in the method

@map = GMap.new("map_div")
@map.control_init(:large_map => true, :map_type => true)
@map.center_zoom_init([lat,lng], 13)

2009-09-09T03:12:00.000-07:00

FACT:1

Disable Extra Startup Programs:

There are certain programs that Windows will start every time you
boot up your system, and during the startup phase, they're all
competing for a slice of your CPU speed. Extra or unwanted items
in the startup list will definitely increase your startup time, perhaps
by several minutes. Some common examples are things related to
AOL, RealPlayer, Napster, instant messengers, and video managers.

If you're not sure about an item, no big deal. You can turn it off,
restart your PC, and see if everything seems to work. If not, you canalways
go back and re-enable an item in the Startup list. This tip alone should
speed up your start-up by 250%. Here are is what you have to do:

1. Go to Start button  Run

2. Type "msconfig", without quotations

3. Hit enter key or click the OK button

4. A System Configuration Utility window will show up

5. Click the Startup tab

6. In the Startup tab you will see several boxes and some of them
will selected (checked). All you have to do is to uncheck
extra items that are of no use. If you run an antivirus
program it is not recommended to uncheck it.

7. After making you choices press the OK button, you will be
prompted to restart computer to apply changes.

8. After restarting your computer a dialogue will be displayed.
You can check the option for not showing this dialogue every
time your PC reboots.

UPLOADING IMAGES WITH ATTACHMENT FU PLUGIN

2009-03-21T23:58:00.000-07:00

step:1

install attachment_fu plugin
rails_app>script/plugin install http://svn.techno-weenie.net/projects/plugins/attachment_fu/

step:2

install minimagick gem

rails_app>gem install minimagick(which is better in memory occuping from rest of it)

step:3
create a controller medias_controller.rb

def index
@medias = Media.find(:all)
end

def new
@media=Media.new
end

def create
@media = Media.new(params[:media])
if @media.save
flash[:notice] = "image successfully uploaded"
redirect_to :action => 'show'
else
logger.debug"%%%%%%%%%%%%% inside else"
flash[:notice]="image not uploaded"
redirect_to :action =>'show'
end
end

def show
@media = Media.find(params[:id])
end

def delete
@media = Media.find(params[:id])
@media.destroy
redirect_to :action =>'index'
end

step:4

in media.rb file

has_attachment :content_type => :image,
:storage => :file_system,
:min_size => 0,
:max_size => 1.megabytes,
:resize_to => '34x38',
:thumbnails => { :thumb => '15x15>' },
:processor => 'MiniMagick',
:path_prefix => "public/medias/"

validates_as_attachment

step:5

In views

views/medias/index.rhtml

<% for media in @medias %>
<%= link_to image_tag(media.public_filename(:thumb)),media.public_filename %>
<%= link_to 'Remove',{:action=> 'delete',:id => media.id},:confirm=> "Are you sure?" , :method => :post %>
<% end %>

views/medias/new.rhtml

<% form_for(:media,:url => {:action => :create }, :html => {:multipart => true }) do |f| %>

Select a photo to upload

Photo: <%= f.file_field 'uploaded_data' %>
<%= submit_tag 'Upload Photo' %>

views/medias/show.rhtml

<%= image_tag(@media.public_filename) %>

ACTION MAILER IN RAILS 2.0

2009-03-21T23:02:00.000-07:00

STEP:1

In environment.rb file write it down like this at the end of the file

require 'smtp_tls'
ActionMailer::Base.default_content_type = "text/html"
ActionMailer::Base.delivery_method = :smtp
ActionMailer::Base.smtp_settings = {
:address => "smtp.gmail.com",
:port => 587,
:authentication => :login,(ur authentication method name here)
:user_name => "your gmail id ",
:password => "your gmail password ",
}

STEP:2

Include smtp_tls.rb file in lib folder

STEP:3

Follow this url then for
action mailerto work but dont change any configuration files as mentioned in the url for u

2009-02-09T02:04:00.000-08:00

RAILS

2008-11-22T00:47:00.000-08:00

How to change a layout for a particular method:

(1)suppose if ur following a particular layout for ur application(application.rhtml)
(2)if u dont want this layout for a method eg.edit
just create another layout for that method eg.layout/editlayout.rhtml
and specify in that method as

def edit
render :layout => 'editlayout'
end

How to specify background image in stylesheet

=>Suppose if u r not getting the background image even though u specify in ur stylesheets like

background-image:url(/img/hp_bg.png);

the current usage in rails try this

background: url(../images/background.jpg)

How to use in_place_form_edit in Rails 2.0

(1)first u need to install the plugin from svn
>ruby script/plugin source http://svn.rubyonrails.org/rails/plugins/

>ruby script/plugin install in_place_editing

(2)Because it is unsupported the in_place_edit plugin has not kept up with changes to rails. This has resulted in the plugin not working with Rails 2+ because of the Cross-Site-Request-Forgery (CSRF) security modifications that include a authenticity token with every non-GET request.

(3)View the patch located http://dev.rubyonrails.org/attachment/ticket/10055/in_place_editing_should_work_with_csrf_and_rjs.patch

and by hand change the code in yourapp/vendor/plugin/in_place/editing/test/in_place_editing_test.rb. The red lines are deleted/replaced and the green are the new lines that are added.

(4)In the controller

class TaskController < ApplicationController
in_place_edit_with_validation_for :task, :title

(5)In views do like this for the field u want to edit

<%@task=task %><%= in_place_editor_field :task, :title %>

(6)Then start ur server and you will see really how simple it is

(7)so u think it is finished no way there is a bug in this if u just press OK with empty field u will get u know that ur really in trouble.So to make ur day happy go through this url to make validations

>validations for in_place_form_edit
http://www.pluitsolutions.com/2007/03/20/custom-in_place_edit-with-validation/