model

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago . I want to create a base model Person with some person related attributes like name, address, phone and so on. One Person can be one ore more of the following: LoginUser with fields for login, password, last_login, ... CardHolder with fields for card_id, last_entrance, ...

问题 So I have three models and when when one of them dAgency is deleted delete-() I'd like all three to be deleted. The problem is that two of them are being deleted, while the top parent one DemDataSet isn't being deleted. Additionally, when I call: echo "<pre>", dd(dAgency::find(21)->DemographicReport()->DemDataSet()->get()), "</pre>"; I get this error: Call to undefined method Illuminate\Database\Query\Builder::DemDataSet() But when I try: echo "<pre>", dd(dAgency::find(21)->DemographicReport(

问题 Starting with 2.2.0 I'm having a problem with nasted mapping. I have two models which I need to map: an EntityObject model (autogenerated by EF from DB) and a simple Data Model. EntityObject model contains an EntityCollection property of another EntityObject model type, Data Model contains an IEnumerable of another Data Model type: these fields should also be mapped. As an example: public class AnotherDataModel { //Some properties } public class DataModel { //Some properties private

问题 So bear with me. How to create a model based on json? What is delegate? Is below logic is correct? Model -> delegate -> json request -> json get -> show to list view In below code I can not see any data on screen. How to show data in QML json request? thanks UPDATED WORKING CODE: import VPlayApps 1.0 import QtQuick 2.0 import QtQuick 2.3 import QtQuick.Controls 1.2 import "qrc:/" Item { id: item1 anchors.fill: parent ListModel { id: ***modelListIP*** } ListView { id: listview anchors.fill:

问题 I have the following case. A reservation, this reservation be canceled, it can be newly created it can be Confirmed it can be rejected. There might be different reasons for cancelation. Lets say the reservation has expired, or it may have not been processed within certain timelimit or some other reason. In order for a reservation to be confirmed a multiple sub - transactions should be performed. This mean that there is a flow within the Confirmation itself. The solution my team came with is

问题 Basic scenario: I have students, courses, and course-requirements that need to be stored in the database. Anyone has any insight into the best way to store these and traverse course prerequisites? 1) Simple example: C: Math 100, prereq: none C: Math 150, prereq: none C: Math 200, prereq: Math 101, Math 150 Student A completed Math 100. How does one determine if he is eligible to take CS200 via database querying? 2) More complicated example: C: Chem 100, prereq: none C: Chem 200, prereq: Chem

问题 I have a PersonViewModel that consists of several List<SubViewModel> (Name, Address, etc.) I have an Html Form with tables for each SubViewModel, where the user can update,add,delete and set items to the primary entry for the person. a simplified table for names: @foreach (PersonNameViewModel name in Model.Names) { <tr> <td> @Html.DisplayFor(modelItem => name.FullName) </td> <td> @Html.DisplayFor(modelItem => name.FirstName) </td> <td> @Html.DisplayFor(modelItem => name.MiddleName) </td> <td>

问题 Can't understand how Rails association with models works. Here is simple question: There are two tables products id| name | status 1 | Tube | 0 2 | Pillar | 1 3 | Book | 0 4 | Gum | 1 5 | Tumbler | 2 statuses status | name 0 | Unavailable 1 | In stock 2 | Discounted With ~ same names for models and controllers. I don't what to create new row in statuses table on every new product. And i want to show status name in erb. What should i write in models and in migration file (for example for which

问题 I am trying to write a unit test that tests that the JSON data returned from the components method call successfully binds to a typescript model. My model looks like the following: export interface IPlayerAccount { playerId: number; name: string; phone: number; street: string; postcode: string; state: string; country: string; } This array of IPlayerAccount is populated on ngOnInit with method definition: getPlayerAccounts(playerId: number) Here is my Jasmine Unit Test to test that the json

问题 I don't need any cosmetic work to do, Is there any better way to do this, I have some doubts while returning the View from controller to View with model.... I hope it will be in better way but I am not able to do this, Please guide me. This is the view. @model MVCwithWebAPI.Models.RootObject @{ ViewBag.Title = "Index"; Layout = "~/Views/Shared/_Layout.cshtml"; } <table> <tr> <td> <strong> <br /> @Model.cod </strong> </td> <td> <strong> <br /> @Model.wind.speed </strong> </td> <td> <strong>