model

问题 I am pulling data using an Entity Framework, placing it in a list, and then placing that list in a DataTable . However it is taking up a lot of data depending on the query, I have had to take out functionality of querying the entire database because it simply crashes VS. I need to find a way to minimize the data used, I was hoping using a data table instead of a simply HTML table would help but it hasn't, although has added some nice functionality. I have a feeling it will require a large

问题 I want to use only XML to bind a list to the data of a JSON file. Here is my code: XML View: <List headerText="Positions" items="{/Positions}"> <ObjectListItem title="{positions>id}"> </ObjectListItem> </List> index.html var oPositionsModel = new sap.ui.model.json.JSONModel(); oPositionsModel.loadData("model/Positions.json"); sap.ui.getCore().setModel(oPositionsModel); model/Positions.json { "Positions": [ { "id": 123456, "article": "Abcde", "amount": 12 }, { "id": 654321, "article": "Edcba",

问题 When I try to run FactoryGirl.create(:job, :purchased) I get the following error. I have been battling this for a long time now and I believe I have a pluralization issue. Issue Models class Job < ActiveRecord::Base belongs_to :company belongs_to :category has_one :coupon has_many :payments end class Payment < ActiveRecord::Base belongs_to :job belongs_to :coupon end class Coupon < ActiveRecord::Base belongs_to :job end Factory FactoryGirl.define do factory :job do category company title {

问题 This is the code when "at rest": var report_parms = { GUID: "@Model.GUID", SerialNumber: "@Model.SerialNumber", ReportName: "@Model.ReportName" }; This is what it looks like at run-time, when stepping through the jQuery: var report_parms = { GUID: "", SerialNumber: "", ReportName: "" }; ...and this is the exception I get because those strings are empty: System.NullReferenceException was unhandled by user code Message=Object reference not set to an instance of an object. StackTrace: at

问题 I'm creating a webapp which uses SQLAlchemy to access the database. I'm getting stuck with two models which are referencing to each other and ending up in an circular import which throws the following exception: --- SNIPP --- (output modified to hide software name) File "/opt/promethium/service/opt/xxxx/lib/python/api/server/server.py", line 11, in <module> from api.server.controllers import * File "/opt/promethium/service/opt/xxxx/lib/python/api/server/controllers/__init__.py", line 3, in

问题 I'm creating a webapp which uses SQLAlchemy to access the database. I'm getting stuck with two models which are referencing to each other and ending up in an circular import which throws the following exception: --- SNIPP --- (output modified to hide software name) File "/opt/promethium/service/opt/xxxx/lib/python/api/server/server.py", line 11, in <module> from api.server.controllers import * File "/opt/promethium/service/opt/xxxx/lib/python/api/server/controllers/__init__.py", line 3, in

问题 I have the following property in my model: [Display(Name = "ActivityModel_FlashFile", ResourceType = typeof(App_GlobalResources.Models))] [Required(ErrorMessageResourceName = "ActivityModel_FlashFile_Required", ErrorMessageResourceType = typeof(App_GlobalResources.Models))] public string FlashFile { get; set; } And in my controller I do: ModelState.Remove("FlashFile"); model.FlashFile = "1"; try { this.UpdateModel(model); } catch (Exception ex) { string allErrors=string.Join(",",ModelState

问题 I am using opencv EM algorithm to obtain GMM models with the help of example code in opencv documentation as follows: cv::Mat capturedFrame const int N = 5; int nsamples = 100; cv::Mat samples ( nsamples, 2, CV_32FC1 ); samples = samples.reshape ( 2, 0 ); cv::Mat sample ( 1, 2, CV_32FC1 ); CvEM em_model; CvEMParams params; for ( i = 0; i < N; i++ ) { //from the training samples cv::Mat samples_part = samples.rowRange ( i*nsamples/N, (i+1)*nsamples/N); cv::Scalar mean (((i%N)+1)*img.rows/(N1+1

问题 Ok, this sounds trivial even to me, but I'm not able to find an answer to this. I have a normal ComboBox , which works perfectly. What I would like to do is add an element (as the last item of the drop-down list ) which is nothing but a Add new label ; when this item is selected, I want to open a window which allows me to define the properties of the element I'm adding. Right now I have the following: <ComboBox x:Name="myCombo" SelectedValue="{Binding Name, UpdateSourceTrigger=PropertyChanged

问题 I have been working on THREEJS framework to render *.dae models. There are several dae models. I have a problem with the location of the models. When I render them, each model has a different location. I set their location dae.position.set(0,0,0); but unfortunately, it doesn't work perfectly. For example, for one model I have to set the location as dae.position.set(-2, -31, 6.5); and then model is on the location(0,0,0). I check it with AXES axes.position.set(0,0,0); . Do you have any idea,