datamapper

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Heroku not Loading do_postgres dependency

Getting started on Heroku, but it does not seem to be loading the necessary dependency (do_postgres (~> 0.10.2)) for dm-postgres-adapter.[详细]

2023-02-15 13:59 分类：问答
multiple destroy()s locking up backend in backbone.js

In the example Todos app for backbone.js, this takes place: clearCompleted: function() { _.each(Todos.done(), function(todo){ todo.clear(); });[详细]

2023-02-14 15:18 分类：问答
Designing a DataMapper for objects that sometimes need to aggregate other objects but not always

I have an object called student which maps to a student table.There is also a courses table, and user_courses table to assign students to courses.This student object can have many course objects, and[详细]

2023-02-13 18:08 分类：问答
DataMapper - create new value for relational DB

I have a relatio开发者_C百科nal DB defined as follows. How can I enter a new value, where B belongs to A. The code given below doesn\'t seem to work.[详细]

2023-02-12 04:19 分类：问答
What, *specifically*, makes DataMapper more flexible than ActiveRecord?

I\'m comparing Doctrine 2 and Propel 1.5/1.6, and I\'m looking in to some of the patterns they use. Doctrine uses the DataMapper pattern, while Propel uses the ActiveRecord pattern. While I can see th[详细]

2023-02-11 12:17 分类：问答
Missing `test` rake tasks in Rails 3 project based on DataMapper template

How can I get the test tasks back? Backstory:I didn\'t start with the default new rails project.I\'m using datamapper with dm-rails and used their boodstrap command:[详细]

2023-02-10 05:18 分类：问答
DataMapper migrating column to a new data type

Issue is that I can\'t change a column type to \'Text\' This is the error I am seeing: DarkBook:playground Justin$ rake migrate_up  (in /Users/Justin/Dropbox/Business/datamapper/playground)   ~[详细]

2023-02-09 20:52 分类：问答
OK for Data Mapper to call another? And to inherit?

In my database I have a User table with many related entities including Pets, Cars, Houses.More often than not my application will be working with just the User, however sometimes it will need to work[详细]

2023-02-08 11:29 分类：问答
DataMapper delete works but only after restarting my app

I have two models, User and Snippet: class User include DataMapper::Resource property :id,Serial ... has n,:snippets[详细]

2023-02-06 17:57 分类：问答
DataMapper: Putting a model into a model

In t开发者_C百科he DataMapper documentation for associations I found an example where they put a model into a model like...[详细]

2023-02-05 12:41 分类：问答