model

问题 Just like how Django models automatically create an integer ID for each column entry of a database table, I would like it to automaticallty create an alpha numeric ID as well. The integer can increment, while the character should be cycle through A-Z. 1_A 2_B 3_C . . . 27_A 28_B And so on. Here is my models.py from django.db import models class Sample(models.Model): sample_ID = models.CharField(max_length=20) # Alpha numeric ID described above. sample_name = models.CharField(max_length=30) As

问题 So I have this simple model: public class OptOut { public int optOutID { get; set; } public bool hasOptedOut { get; set; } public List<Cohort> list { get; set; } public OptOut() { List<Cohort> list = new List<Cohort>(); list.Add(new Cohort()); list.Add(new Cohort()); list.Add(new Cohort()); list.Add(new Cohort()); this.list = list; } } Where as you can see one of the properties is a List of Cohort objects. The Cohort object has some simple boolean properties: public class Cohort { public bool

问题 I'm new to MVC and EF code first. I'm in struggle to model a real-estate company DB model using EF code-first approach and I did some exercises as well as reading some online tutorials. First thing I have a customers table that would be in relation with one or more properties he/she has registered as it's owner to sell or to rent, I was wondering if it is possible to have some sub classes inside a model class for registered properties as below: public Property { public int PropertyID { get;

问题 I have a rails app with a Location model, which has a rating , and a rating_count field. Now, I need to reset every Location 's rating and rating_count attributes to 0 at a specific time everyday, lets say 12:00:00 UTC. How would I accomplish this? I'm using the default sqlite3 databases. 回答1: The best option is to use cron. You can find tons of documentation out there!Although if you are running a Rails app you should check out whenever a pretty neat gem for managing cron jobs for your app!

问题 I had a problem where I was getting duplicate results in a search, in my rails app that allow the user to search for projects in a database. Here is the search function in the project model: def self.search(search_industry, search_role, search_techs_ids) _projects = Project.scoped if search_industry.present? _projects = _projects.where ['industry LIKE ?', like(search_industry)] end if search_role.present? _projects = _projects.where ['role LIKE ?', like(search_role)] end if search_techs_ids

问题 I would like to find whether the given running device is Galaxy Note programmatically. How can I do this, kindly help me with a snippet to find it. 回答1: In order to get android device name you have to add only a single line of code: android.os.Build.MODEL; Copy and paste the following code in your projects onCreate(): super.onCreate(savedInstanceState); setContentView(R.layout.main); TextView tv1 = (TextView) findViewById(R.id.tv1); String str = android.os.Build.MODEL; tv1.setText(str); 回答2:

问题 I am working on a simple Ember app that shows ID's for list elements. The ID's are computed with simple functions based on the element sequence (and some other simple factors). For example: <div class="content-id element">[ELEMENT ID]</div> <div class="content-name">{{element.name}}</div> I don't want to hardcode the element id's into the JSON object, but rather compute them in a simple function. Would it be best to place this function in the route object or in the component? What's the

问题 I have an application with 4 projects Presentation BLL Models DA Should the BLL be passing and retrieving View Models to and from the Presentation Layer. (And handle all mapping) Or rather should it only deal with Domain Models and let the Presentation Layer (Controller) handle all mappings. Thanks 回答1: There is nothing absolute about your development approach. you could choose what suits you in any case. But you should consider your future maintenance and extension possibilities when you

问题 So I found an answer for a question I had about dynamic option pricing, but that lead to me being stumped. I can understand the majority of the answer, but when it comes to the XML and module implementation, I'm lost. Here's what I'm trying to do: http://www.magentocommerce.com/boards/viewthread/260544/#t348802 Need to override the Mage_Catalog_Model_Product_Type_Price model and the Mage_Catalog_Block_Product_View_Options block. Modified Price.php is located at /app/core/local/rtega

问题 I am using a jqGrid that has allot of columns to it. I added the view option (when clicking on a row and then on the 'view' button, in the bottom left corner of the grid, it opens a model with all the info for that row. I see that the model has some css style: overflow-hidden Therefor if i have allot of columns to show after a certain height that i gave it when creating the grid, they get hidden. How can i make that dialog box be: overflow-auto If possible i want only the inside div to scroll