Using form to create data, this section will cover the content: Create form, redirect user, render views and flash messages.1. Views PreliminaryEdit App/views/posts/index.html.erb This view file as follows:New_post is the new action's prefix, referring to [Ruby on Rails] and I learned the route map, but after it added the _path suffix.Then edit the App/views/posts/new.html.erb view file as follows:2. Bindin
My little brother was a beginner of Ruby, and I didn't use Linux.Search on the Internet a lot about the configuration of the development environment article, but always and actually a bit in and out, find n times the article, finally found the simplest environment installation configuration method, share the nextRecommended with Ubintu, feel for the habit of using Windows novice, still better operation.We use RVM to install the Management
This chapter targets: Detail view, rails routing, Asset Pipeline, Sass1. Bootstrap is an open source web design framework developed by TwitterMockup is a Web concept diagram, often referred to as a "wireframe" in the web, used to show sketches of the final appearance of the applicationServo (P130)#link_to的第一个参数是链接文本, the second parameter is the link address, the third parameter is optional, and is a hash.On
view is available, because it is just a simple test, the model does not add, just change the action to the corresponding model of the mail or other.
Next, configure the Gmail SMTP server in the Config/application.rb file, such as (because Gmail needs fq to test, so in real development, the configuration of the SMTP server for Gmail can be placed in the Production.rb file, In test.rb and development.rb files with other mailboxes instead, I use the QQ SMTP server, as long as the QQ in the SMTP
Error
MySQL: Error: Query: not connected: Create Table 'schema _ migrations '('version' varchar (255) not null) engine = InnoDB
Solution;
Ruby is 1.8.6, rails is 2.2.3, MySQL is 5.1.51
This problem occurs because the libmysql. dll file in MySQL 5.1.3 and later cannot be properly connected to rails. Therefore, you only need to replace an old version of lib
The previous "[Ruby on Rails] and I learned hello World" mentioned that the route corresponding to the file is CONFIG/ROUTES.RBIn fact, we just added a line of code: Resources:p OSTsHowever, this code has multiple default routes, which can be viewed through rake routes, as follows:[Email protected]:/home/ywt/ror_tests/blog# rake routes Prefix Verb URI Pattern controller#action Posts ge
First, the new projectRails new App--skip-bundleModify Gemfile file after completion: Vim GemfileChange source to Taobao or Ruby-china.Add to this file: Gem ' Phantomjs 'Then run: Bundle installSo the project is new and completed.Second, generate PDFCreate a controller to add require ' PHANTOMJS ' to the head and add a get method for getting the PDF: get_pdfAdd the following code to this method:Phantomjs.base_dir = "/path/project_name/bin/phantomjs/"
ActiveRecord programming guide in Ruby on Rails, rubyonrails
Avoid modifying the default ActiveRecord (Table Name, primary key, and so on) unless you have a very good reason (such as a database not under your control ).Put the macro-style method before the class definition (has_many, validates, and so on ).
Preference has_expect: through is better than has_and_belongs_to_expect. Has_validation: through allo
The following issues have been encountered recently in a ROR Web project:
Products can be classified by class navigation browsing, can be divided into three types of a,b,c, three categories under the other categories, at the same time, the base class and its classification can be extended by the user. Horizontally, the main class can be extended by the user, and the user can extend it vertically.
Category information Store and Categories table:
Id:integer PRIMARY Key
Name:string category Nam
Redis Store is a toolkit designed for Ruby applications that supports fragmentation, master-slave copying, marshalling, and timeouts and namespaces. In addition, it is also very easy to use on the Ruby on Rails.How to use:for using the Redis Store on rails, first we need to add a portal to the Gemfile file
Gem ' redis-
user model that contains first_name, last_name, nickname, where the nickname field is an array type. The following migration code creates the corresponding table:
Create_table:users do |t|
T.string:first_name
t.string:last_name
t.string:nicknames,: Array => true
end
And for this table, we have a simple model
Class User
We do not use the default value for the field, if we instance a user object, the code is like this.
John = User.create (: first_name => ' J
Up to now, should come to an ending, altogether has 29 essays, simply gather together an integer, then write the IDE environment. All the previous code was written by me with the editor scite in Ruby, and it was inconvenient, as rails developed, there are many Ides coming out, just to see the 6.0RC version of NetBeans offering a separate rails development environ
The essay briefly understands the use of rails ' test and test data, and this time to see how to add a test to a model for deletion and modification.
1. Or using the last written products_test.rb, modify the Test_turth method by the name Test_create and make the contents:
def test_create
assert_kind_of Product, @product
assert_equal 1, @product. ID
assert_equal "pragmatic Ver Sion control ", @product. Title
assert_equal" I to use version control ",
| format.html Format.json {render json: @alljson} #这里会自动调用to_json end #render Json:lsjson #render JSON: {test: 1} End Ruby calls in JSON formatFirst JSON format NOTE:1, after the nodes to follow:, can not have spaces2, nodes, name these places cannot be enclosed in quotation marks, otherwise you cannot use Ruby to convert to JSON format.Simple_json = {nodes: [{name: ' Bob ', Age: ' $ ', awesome: ' true '}
Written in front:
The first time, write serial Ah, hope to oneself and you reader a little help, understand a little bit rubyonrails development on the situation. Can help a little, that is the reason to insist. ^_^
Encyclopedia of Life: www.eol.org
The website is based on ROR, the content is to do interactive Life Encyclopedia Museum, this article mainly introduces, if through this website provides the code, establishes the ROR website, and learns, this website uses some, ror most common tec
I mainly use two plug-ins: rinari and Yari.
Rinari supports fast jump to multiple files in the rails project. In addition, it provides the grep tool, which I found useful. The shortcut keys are easy to remember.
Yari provides an Emacs interface for the RI tool that comes with Ruby, which is compatible with the latest Ruby and easy to operate. You only need to u
Today, I went to cyberspace to deploy my website for my friends. The server is a Windows2003 server. I did not expect to configure ror on Windows2003 as a nightmare, because I saw a lot of IIS and ror documents on the Internet. If you don't know, it's a nightmare. I was too busy till five o'clock P.M., but I still didn't configure it. I came back at night and thought about it. Something is wrong. It may be okay to change my mind.
The general idea is to install an Apache listener to port 8080,
For example, if you have a users table, wait until the user ID array:Select ID from the users where age > 20;To implement the above SQL statements, there are several ways to do this in rails:
User.where (' Age > '). Select (: ID). Collect (:id)
User.where (' Age > '). Select (: ID). map (:id), select ID from ' Users ' where (age
User.where (' Age > '). Pluck (: ID), SELECT ' users '. ' ID ' from ' users ' where (age
The first t
Ruby on Rails Twitter ApplicationProgramThe interface is very simple.Twitter is a simple rails application.The application interface for querying information is called as a GET request, while the application interface for modifying, creating, or deleting information is a POST request. The command itself is the URL read by your program. Twitter will respond in HTT
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