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can-view-import

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<can-import from="MODULE_NAME" />

Statically import a module from within a can-stache template. MODULE_NAME will be imported before the template renders.

<can-import from="components/tabs" />
<tabs-widget />

Parameters

  1. MODULE_NAME {moduleName}:

    A module that this template depends on.

<can-import from="MODULE_NAME">content</can-import>

Dynamically import MODULE_NAME if content is anything other than whitespace; the scope within the template is a Promise.

<can-import from="components/tabs">
  {{#if isResolved}}
    <tabs-widget />
  {{/if}}
</can-import>

Parameters

  1. MODULE_NAME {moduleName}:

    A module that this template depends on.

<can-dynamic-import from="MODULE_NAME">content</can-dynamic-import>

Dynamically import MODULE_NAME; the scope within the template is a Promise.

<can-dynamic-import from="components/tabs">
  {{#if isResolved}}
    <tabs-widget />
  {{/if}}
</can-dynamic-import>

Parameters

  1. MODULE_NAME {moduleName}:

    A module that this template depends on.

<can-dynamic-import from="MODULE_NAME" value:to="*MODULE_REF"/>

Dynamically import a module from within a can-stache template. Since there is no subtemplate to attach the Promise to as the current scope, you must export the Promise's resolved value to the template's refs scope using value:to.

<can-dynamic-import from="components/tabs" value:to="*tabsWidget" />
{{#if *tabsWidget}}
    <tabs-widget />
{{/if}}

{{! other can-reflect-promise keys also work, as does the *REFERENCE shorthand from can-stache-bindings }}

<can-dynamic-import from="components/tabs" 
    isPending:to="*tabsWidgetPending"
    isRejected:to="*tabsWidgetError"
    this:to"*tabsWidgetPromise" />
{{#if *tabsWidgetPending}}
    Loading...
{{else}}
    <tabs-widget />
    {{#if *tabsWidgetError}}
        {{*tabsWidgetPromise.reason}}
    {{/if}}
{{/if}}

{{! load a stache partial 
     -- staches are functions, so prefix it with `@` to put the function in the ref scope without running it }}

<can-dynamic-import from "my-partial.stache!" @value:to="*myPartial" />

{{> *myPartial}}


Parameters

  1. MODULE_NAME {moduleName}:

    A module that this template depends on.

Use

A template might depend on component or helper modules. <can-import> allows you to specify these dependencies.

Example:

<can-import from="components/my_tabs"/>
<can-import from="helpers/prettyDate"/>

<my-tabs>
  <my-panel title="{{prettyDate start}}">...</my-panel>
  <my-panel title="{{prettyDate end}}">...</my-panel>
</my-tabs>

Currently this only works with can-view-autorender or the steal-stache plugin.

Progressive Loading

A template may (conditionally) load a module after the initial page load. <can-import> allows progressive loading by using an end tag.

This example shows a component being loaded ad hoc:

<can-import from="components/home"></can-import>

This example illustrates conditionally loading modules based on some application state:

{{#eq location 'home'}}
  <can-import from="components/home">
    ...
  </can-import>
{{/eq}}

{{#eq location 'away'}}
  <can-import from="components/away">
    ...
  </can-import>
{{/eq}}

CanJS is part of DoneJS. Created and maintained by the core DoneJS team and Bitovi. Currently 3.14.1.

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