In order to clear all of your Rails log files development.log, production.log, server.log and test.log with a rake task, type: This is mainly useful while under development. Be careful with this as it will clear out your production.log file as well!
Assume you have a CitiesController with just one action capital_city, which doesn’t need any of the RESTful actions. I set up a custom route for this one action. The capital_city action returns the xml like the following, for example: Here is what the entry in the routes.rb file looks like: Your controller may look something [...]
If you’re seeing the following error: The way I was able to resolve it was to follow Boonedocks.net, since I’m also using MAMP for its MySQL Database instance. The only difference is that I already had MAMP 1.9.4 installed and so I had to download the MAMP_components_1.9.dmg which contains the mysql-5.1.44 source code. MAMP 1.9.4 [...]
The wym_editor (WYSIWYM – “What you see is what you mean”) plugin is pretty cool. It allows you to define which form fields you want to offer WYSIWYM editing functionality. This makes it easier for you to edit fields and give them styles. It also allows you to see the HTML source view while you [...]
If you want to add multiline comments to your Rails .html.erb Views do the following. The =begin and =end need to be at the beginning of the lines for it to work! Also, you cannot have any ERB code in the =begin and =end blocks, if you comment this way. If you want to comment [...]
There are a number of people following lynda.com’s Ruby on Rails Essential Training tutorial and running into issues since some of the information in the tutorial is outdated. The method scaffold was removed from Rails 2.0. You can still create scaffolds but must do so by generating the scaffold files explicitly. If you see NoMethodError [...]
When referencing an external JavaScript file within the head tag of your HTML, the rendering of the page is halted while the external JavaScript file is downloaded and loaded. In order to speed up rendering of the page, you can move your javascript_include_tag from your head tag to the last line within your body tag [...]
There are lots methods in Rails where the last argument is a Hash. Sometimes the same Hash is passed into more than one method, causing you to repeat yourself. For example, when using validation helpers in your models, you may be doing something like this: Using with_options within a Model: Notice, :on => create is [...]
In order to reuse database.yml sections for your database connection information, you can do the following in your database.yml file. Notice the use of &development which creates a tag which can be referenced later within your database.yml file. You can also do something like this, which assigns the &login tag which is later referenced within [...]
Installing the will_paginate Plugin You can install this plugin as a gem but in this example, I’ll install it as a plugin so it can travel with the rails application. This disadvantage of installing it as a plugin instead of a gem is that you’ll need to install it as a plugin for each rails [...]
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