Just a few notes to be very careful when installing PostgreSQL 8.2.4 on Windows Vista: Because PostgreSQL needs to be installed as a Windows service, it needs to create an account that will be granted Logon On as a Service permission. When I first installed it, I allowed the installation wizard to use a default…
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Styles can be dynamically changed in 4 ways: With Javascript (overrides all other styles)el = document.getElementById(‘pageBody’); el.style.backgroundColor = ‘red’; Inline styles (override both embedded and external styles)Inline styles are styles that are written directly in the tag on the document. Inline styles affect only the tag they are applied to. <a href=”” style=”font-size:91%;”> Embedded styles…
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I decided to use BackgrounDrb 0.2.1 to launch a periodic task that would run every 15 seconds.Warning: After going through the hassle of setting up BackgrounDrb, I found out that it isn’t even supported in Windows (my dev environment)! See step 8. So, these instructions haven’t been fully tested yet on a *.nix environment. Good…
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Good sites comparing Ruby on Rails with other frameworks Java to Rails: Evaluation: moving from Java to Ruby on Rails for the CenterNet rewrite PHP to Rails:
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Basically, I dug up 5 plug-ins (plugins) that can do the job 1. acts as attachment 2. attachment_fu (extension of act_as_attachment) I used Khamsouk’s tutorial (but without the AJAX) and had to change the following line from :max_size => 1.megabytes to :size => 0.megabyte..1.megabytes Mike Clark also has a good tutorial, but he doesn’t use…
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In case you’re not using it already, Google’s web history is a free and handy way to find useful links that you forgot to bookmark. I use it quite a bit when when I google search bugs and installation problems that I need to look up later. It can keep track of (1) all of…
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The regular scaffold generator (e.g. ruby script/generate scaffold model controller) requires you to create your model and controller first. The scaffold_resource generator, on the other hand, generates the (RESTful) model and controller for you. For example: ruby script/generate scaffold_resource Caregiver first_name:string last_name:string In Rails 2.0, use resource instead: ruby script/generate resource Caregiver first_name:string last_name:string Here’s…
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PostgreSQL 8.2.5 error == CreateHeartrates: migrating ================================================ — create_table(:heartrates) NOTICE: CREATE TABLE will create implicit sequence “heartrates_id_seq” for serial column “heartrates.id” rake aborted! PGError: ERROR: multiple default values specified for column “id” of table “heartrates” : CREATE TABLE heartrates (“id” serial primary key DEFAULT NULL, “user_id” integer DEFAULT NULL, “timestamp” timestamp with time zone DEFAULT…
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Here’s some code (and rendered view) for various version numbers, host names, IPs for Ruby, Rails, PostgreSQL, SMTP. <b>Network</b><br> UNIX hostname: <code><%= `hostname` %></code><br> SERVER_ADDR: <code><%= request.env[“SERVER_ADDR”].to_s %></code> <br> HOST_NAME : <code><%= request.host %></code> <br> REMOTE_ADDR: <code><%= request.env[“REMOTE_ADDR”].to_s %></code> <br> <br> <b>Software</b><br> Database: <code><%= ActiveRecord::Base.connection.select_value(“SELECTÂ VERSION()”) %></code><br> Email delivery method: <code><%= ActionMailer::Base.delivery_method %></code><br> SMTP server:…
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