Why is it that Angular is unable to locate the component factory for my component, even though I have declared it in the entryComponents option of my Module?

Is there a way to dynamically create and show a component in an ngx-bootstrap's modal?

I attempted to declare the component in the entryComponents option of RegMktRiskHomeModule, but it did not work. Currently, I am only able to declare the ScenariosGraphComponent in the AppModule, similar to how it is done in RegMktRiskCommonModule.

Could this issue be linked to the fact that RegMktRiskHomeModule is imported in HomeModule, which is lazy-loaded by the application?

Below is a snippet of my code:

reg-mkt-risk-common.module.ts:

@NgModule({
    declarations: [
        ScenariosGraphComponent
    ],
    entryComponents: [
        ScenariosGraphComponent
    ],
    exports: [
        ScenariosGraphComponent
    ],
    schemas: [CUSTOM_ELEMENTS_SCHEMA]
})
export class RegMktRiskCommonModule { }

reg-mkt-risk-home.module.ts:

@NgModule({
    declarations: [
        RegulatoryMarketRiskHomeComponent,
        OverviewGridComponent // <-- component that displays ScenariosGraphComponent in a modal
    ],
    exports: [
        RegulatoryMarketRiskHomeComponent
    ],
    imports: [
        // ...,
        RegMktRiskCommonModule
    ],
    providers: [
        // ...
    ]
})
export class RegMktRiskHomeModule { }

And here is the error message I am encountering:

ERROR Error: No component factory found for ScenariosGraphComponent. Did you add it to @NgModule.entryComponents?
    at noComponentFactoryError (core.js:9659)
    at CodegenComponentFactoryResolver.push../node_modules/@angular/core/fesm5/core.js.CodegenComponentFactoryResolver.resolveComponentFactory (core.js:9697)
    at ComponentLoader.push../node_modules/ngx-bootstrap/component-loader/fesm5/ngx-bootstrap-component-loader.js.ComponentLoader._getContentRef (ngx-bootstrap-component-loader.js:411)
    at ComponentLoader.push../node_modules/ngx-bootstrap/component-loader/fesm5/ngx-bootstrap-component-loader.js.ComponentLoader.show (ngx-bootstrap-component-loader.js:152)
    at BsModalService.push../node_modules/ngx-bootstrap/modal/fesm5/ngx-bootstrap-modal.js.BsModalService._showModal (ngx-bootstrap-modal.js:927)
    at BsModalService.push../node_modules/ngx-bootstrap/modal/fesm5/ngx-bootstrap-modal.js.BsModalService.show (ngx-bootstrap-modal.js:853)
    at Object.action (overview-grid.options.ts:48)
    at MenuItemComponent.push../node_modules/ag-grid-enterprise/dist/lib/menu/menuItemComponent.js.MenuItemComponent.onOptionSelected (menuItemComponent.js:102)
    at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:421)
    at Object.onInvokeTask (core.js:16147)
javascriptangulartypescriptdependency-injection

Answer №1

It is possible that you may have overlooked importing the MatDialogModule in the module of the component responsible for opening the dialog box. Angular might display an error message that could be confusing in such scenarios.

Answer №2

To implement the necessary changes in your code, follow these steps:

@NgModule({
    declarations: [
        ImprovedMarketRiskHomeComponent,
        EnhancedGridComponent,
        ChartsGraphComponent
    ],
    entryComponents: [
        ChartsGraphComponent
    ],
    exports: [
        ImprovedMarketRiskHomeComponent
    ],
    imports: [
        // ...,
        UpgradedRiskModule
    ],
    providers: [
        // ...
    ]
})
export class MarketRiskModule { }

Ensure to exclude ChartsGraphComponent from your UpgradedRiskModule

Answer №3

In the case that your Module is being lazy loaded and it's necessary to share services between those lazy loaded modules, it is advisable to create a shared module. This shared module should contain common components and services, which can then be imported into the app module for easy access.

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