controller

问题 In my Spring MVC application, I have a method in a controller that needs to save a bunch of objects (built from an uploaded file) to a database. Let us leave aside for the moment the whole question about whether transactions should be done in the controller or service layer -- the point is that it should technically be feasible to do it in the controller, but I am finding problems. If you look at the code below, what I am expecting is that if any of the three calls to saveContact fails with

问题 I have the following setup. 1 product has many product_types. many product_types have 1 type. A HABTM relationship from my understanding of the docs. My models are class Product < ApplicationRecord has_and_belongs_to_many :types end class Type < ApplicationRecord has_and_belongs_to_many :products end I have a join table migration as such class CreateJoinTableProductTypes < ActiveRecord::Migration[5.1] def change create_join_table :products, :types do |t| t.index :product_id t.index :type_id

问题 I am working on an app with a navigation controller. I know how to set the title when the view loads initially. I push a new view controller and set it's title. Now the problem is when I press the back button, the title for the original view controller is not there anymore. I tried to do... - (void)viewWillAppear:(BOOL)animated { self.navigationController.title = @"Some Title"; } This did not set the title though. Does anyone know what I can do? 回答1: The UINavigationController gets the value

问题 to put it simply: is there a way to have multiple sccrollable widgets (say, SingleSchildScrollView ) together in sync? i just want 2 scrollables that can scroll the other as i scroll one. this way i can use Stack to put them on top of each other and the one behind can scroll following the front one. or maybe put them in another set of Column or Row so that they are separate, but still scrolls by just scrolling either one. i tried using controller but it does not seems to be doing what i think

问题 I have the following controller in TabletController.cs file: public class TabletController : ApiController { public IQueryable Get(int c_id) { using (EMSMVCEntities entities = new EMSMVCEntities()) { return entities.Calls.Where(e => e.call_id == c_id); } } } I'm trying to call: http://localhost:53366/api/Tablet/157 But I get the following error: Call is dDbSet Also, I need to get the results of the table's fields in json format. I tried to serialize it in JSON, but I get the same error.

问题 I trying to design navigation menu, I have 3 Items like this: Dashboard Pages List Add Articles List Add Now I want to bold Pages when user is in this section, and if is in Add page I want bold both Pages and Add my routes.php is : Route::group(array('prefix' => 'admin', 'before' => 'auth.admin'), function() { Route::any('/', 'App\Controllers\Admin\PagesController@index'); Route::resource('articles', 'App\Controllers\Admin\ArticlesController'); Route::resource('pages', 'App\Controllers\Admin

问题 I want to validate one of the request parameters in my controller . The request parameter should be from one of the list of given values , if not , an error should be thrown . In the below code , I want the request param orderBy to be from the list of values present in @ValuesAllowed. @RestController @RequestMapping("/api/opportunity") @Api(value = "Opportunity APIs") @ValuesAllowed(propName = "orderBy", values = { "OpportunityCount", "OpportunityPublishedCount", "ApplicationCount",

问题 I want to validate one of the request parameters in my controller . The request parameter should be from one of the list of given values , if not , an error should be thrown . In the below code , I want the request param orderBy to be from the list of values present in @ValuesAllowed. @RestController @RequestMapping("/api/opportunity") @Api(value = "Opportunity APIs") @ValuesAllowed(propName = "orderBy", values = { "OpportunityCount", "OpportunityPublishedCount", "ApplicationCount",

问题 Adding a clear button for a calendar but I keep receiving "Nothing handled the action" Here is the .hbs file <button class ="clearBtn" {{action "clear"}}> Clear </button> .js controller file actions: { clear(){ this.set(true, '') } }, What am I missing for the action to be called? 来源： https://stackoverflow.com/questions/62471945/clear-button-on-calendar-emberjs

问题 Adding a clear button for a calendar but I keep receiving "Nothing handled the action" Here is the .hbs file <button class ="clearBtn" {{action "clear"}}> Clear </button> .js controller file actions: { clear(){ this.set(true, '') } }, What am I missing for the action to be called? 来源： https://stackoverflow.com/questions/62471945/clear-button-on-calendar-emberjs