Ruby on Rails, mysql column type :text, What class is this as a ruby object?



Category : Databases

你好,


When a column in mysql table is typed :text, how is this then treated in Ruby.


In other words, what is the class?


Is it a string?


View Replies

Related to : Ruby on Rails, mysql column type :text, What class is this as a ruby object?


Ruby/Rails - Working with both ruby-mysql and mysql2
Category : Programming Languages

I'm migrating a very big Rails 2.3 application from ruby 1.8 to 1.9. Along the way, I've had some database encoding issues that, it seemed, could only be resolved by moving from the old ruby-mysql gem to mysql2.


This has worked fine for all ActiveRecor


View Replies


Rails mysql Type Error after switching to Ruby 1.9.1
Category : Databases

I'm not quite sure how to go about diagnosing this issue, after switching my app to Ruby 1.9.1 I'm getting this error:


TypeError
wrong argument type Mysql (expected Struct)

And it seems the app fails to boot, so I'm not really sure of how to even begin sol


View Replies


Inheritance in Ruby on Rails: setting the base class type
Category : Programming Languages

I am implementing a single table inheritance inside Rails. Here is the corresponding migration:


class CreateA < ActiveRecord::Migration
def self.up
create_table :a do |t|
t.string :type
end
end

Class B inherits from A:<


View Replies


ruby on rails Controller class instantiate a ruby class?
Category : Programming Languages

I am new to RoR .I want my controller to instatiate an existing class from lib .


Collect data in the form of a string and throw the result on the view.erb.Can I do that.


Do i have to create a new model object and that should that model object inturn call the lib class.


View Replies


Extract data from Mysql::Object in ruby on rails
Category : Databases

I have code to run sql query in ruby as follows


sql =
ActiveRecord::Base.connection()
sql.begin_db_transaction
report = sql.execute("select * from users;")
sql.commit_db_transaction


So after this report is an Mysql::object. Now I want to extract al


View Replies


Ruby/Rails - Active Record Db Migration to MySQL - timestamp type?
Category : Programming Languages

I am using Redmine and when I run a rake db migration the database gets created in mysql ok. My problem is that the date field is wrong. I want it to be a mysql timestamp type, but instead it is a DATETIME type in MySQL.


class CreateChats < ActiveRecord::Migration
def sel

View Replies


Ruby on rails: Render 2 partials or figure out the kind of class and object is
Category : Programming Languages

I want to display different types of objects in the same ajax called controller function. I want to render out when I send back an ajax call. The problem is I want the "title" attribute of one object and the "name" attribute of another object. I can't render 2 partials and can seem to figure out


View Replies


Ruby on Rails: Search logic query gives MySQL ambiguous column error
Category : Databases

Search logic is automagically doing an INNER JOIN on one the tables in my DB, is there a way to get it to specify to not include the user column in that second table?


View Replies


How do I find a MySQL ENUM-type column definition in Ruby?
Category : Databases

I have a Mysql table defined as:


CREATE TABLE `Events` (
`entity` enum('CLN','TDS','TMS','VTMS') NOT NULL DEFAULT 'CLN',
`type` enum('INFO','STAT','WARN') NOT NULL)

How can I find what the ENUM-type column definition is in Ruby?


View Replies


multiple attributes to save as blob data type in mysql and retrieve in ruby on rails
Category : Databases

I have got about 9 combo box in registration form and i would like to save all of them as blob data type in mysql and retrieve them in edit form
my view form looks like the following


<%= select("pcs","pc_info[HDD]",options_for_select(["---Select---","20GB","40GB","160GB","2

View Replies


2012 / 2017 Copyrights BigHow , All Rights Reserved .