belongs-to

相关标签：javascript jquery android 多少钱 iPhone

Google App Engine - Is this just a fluke, or could changing the version of an app improve cold-start time?

Here is the situation: I had an app with a cold start time of about 4 seconds.I was trying to improve the cold start time 开发者_运维技巧by removing a bunch of libraries and code I didn\'t really need[详细]

2022-12-23 01:00 分类：问答
A field in a rails form to select a 'belongs_to' object

Oh so please bear with me... I have a model for bookings and a model for drivers. A driver has many bookings and a booking belongs to a driver.[详细]

2022-12-22 01:38 分类：问答
How to create "two-side" many-to-many relationships in Rails?

Suppose we have a photography site. Any author can subscribe to receive updates from any other author. Obviously if author A is subscribed to author B that doesn\'t mean that B is subscribed to A. So[详细]

2022-12-20 16:19 分类：问答
Rails ActiveRecord associations inconsistently updated

I am running into some Rails 2.3.5 ActiveRecord behavior I do not understand. It appears that an object can have its association ids updated in inconsistent ways.[详细]

2022-12-20 14:06 分类：问答
Setting up a mutual belongs_to in Ruby on Rails

I\'m creating a wiki.Each Article has_many Revisions, and an Article belongs_to a single current_revision.So in the database, Articles have a single reference to a Revision\'s id, and Revisions each h[详细]

2022-12-19 15:04 分类：问答
Zend Framework problems using Element, sub-forms and belongsTo [duplicate]

This question already has answers here: Zend_Form using subforms getValues() problem (4 answers) Closed 2 years ago.[详细]

2022-12-17 04:21 分类：问答
Optional belongsTo relationship in cakephp

I have a simple Category model in my CakePHP application. I want to add sub-categories, and do this by 开发者_JAVA百科simply adding a parent_id column.[详细]

2022-12-16 13:52 分类：问答
ActiveRecord has_one relationship does not return in certain cases

Given three models that are each nested in each other. If I create the top-level object and build_* the other child objects, I can retrieve all child objects through the relationships before and after[详细]

2022-12-15 07:22 分类：问答
Relation between two single-table inheritance models

I have the following two models class ContactField < ActiveRecord::Base end class Address < ContactField[详细]

2022-12-13 21:51 分类：问答
Rails: save a record via belongs_to and setting the foreign key

Is there a better way of writing this code? It just doesn\'t sit right with me, I feel like there is something really \'rails开发者_C百科 like\' that I should already know:[详细]

2022-12-11 17:45 分类：问答