Error Before Updating Scaffolding From New Db Schema Try Creating
User List Log In the dreaded "Before updating scaffolding from new DB schema, Derek Belsham (dbelsham) on 2006-01-16 03:42 Hi Can any one help me with this? I think that this is soemthing quite simple as there is quite abit traffic about this on the web and everyone sems to figure it out. I have tried most of the solutions that I can find. but nothing. I have mysql 5.0.11 working on linux redhat 9. ruby is working rails install mysql library seem to be there. to some trying rt get mysql to install need to point the installer to the correct mysql. I have the table created an am usein the example in linux journal to test it out. I am new to ruby and rails but think it may have potential for some ideas I have. [derek@192 Blog]$ script/generate scaffold Blog Admin exists app/controllers/ exists app/helpers/ exists app/views/admin exists test/functional/ dependency model exists app/models/ exists test/unit/ exists test/fixtures/ identical app/models/blog.rb identical test/unit/blog_test.rb identical test/fixtures/blogs.yml error Before updating scaffolding from new DB schema, try creating a table for your model (Blog) my database # MySQL (default setup). Versions 4.1 and 5.0 are recommended. # # Get the fast C bindings: # gem install mysql # (on OS X: gem install mysql -- --include=/usr/local/lib) # And be sure to use new-style password hashing: # http://dev.mysql.com/doc/refman/5.0/en/old-client.html development: adapter: mysql database: blog_development username: derek password: wcug13 socket: /tmp/mysql.sock # Connect on a TCP socket. If omitted, the adapter will connect on the # domain socket given by socket instead. #host: localhost #port: 3306 # Warning: The database defined as 'test' will be erased and # re-generated from your development database when you run 'rake'. # Do not set this db to the same as development or production. test: adapter: mysql database: blog_test username: derek password: wcug13 socket: /tmp/mysql.sock production: adapter: mysql
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be that some predefined databases can have aspects that are awkward to deal with from the software side. Pre-existing SQL databases, particularly if complex, can often pose problems for software developers who are creating a new application.The data may be in a format that makes it hard to access or update, and may include SQL functions and procedures.Jon Smith looks at what tools there are in Microsoft’s Entity Framework's Data Access technology that can deal with these requirements.In many large-scale projects, software developers are often have to work with existing SQL Server databases with predefined tables and relationships.This produces data classes with various Data Annotations to set some of the properties, such as string length and nullablity (see the example below built around the Customer Table), plus a Db Context with an On Model Creating method to set up the various relationships. Certainly it is very useful to have the Data Annotations because front-end systems like MVC use these for data validation during input. However I did have a couple of problems: As I said earlier the standard templates enable ‘lazy loading’.I have been corrected in my understanding of lazy loading by some readers.I’ll actually use the Adventure Works LT2012 database, which is a cut-down version of the larger Adventure Works OLTP database. NET MVC5 (MVC) with the propriety Kendo UI package for the UI/presentation layer, which I cover in the next article.At the end, I also mention some other techniques that I didn’t need for Adventure Works, but I have needed on other databases.The aim is to show how you can use EF with pre-existing databases, including ones that need direct access to T-SQL commands and/or Stored Procedures.Entity Framework has a well-documented approach, called reverse engineering, to create the EF Entity Classes and from an existing database. victoria secret model dating leonardo dicaprioFind love date dating online dating adult personalSweden free adult chatinternational dating nezperce idahosugarmommas datingpatti stanger dating tips online dating in the dark australia apply Hintli k zlar n n sexsi vepcam goruntuleri best book christian dating Sexy naughtychat dating in the dark australia apply