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Localization

Before you read about the Localization Pipe and the Localization Service, you should know about localization keys.

The Localization key format consists of 2 sections which are Resource Name and Key. ResourceName::Key

If you do not specify the resource name, it will be defaultResourceName which is declared in environment.ts

const environment = {
  //...
  localization: {
    defaultResourceName: 'MyProjectName',
  },
};

So these two are the same:

<h1>{{ '::Key' | abpLocalization }}</h1>

<h1>{{ 'MyProjectName::Key' | abpLocalization }}</h1>

Using the Localization Pipe

You can use the abpLocalization pipe to get localized text as in this example:

<h1>{{ 'Resource::Key' | abpLocalization }}</h1>

The pipe will replace the key with the localized text.

You can also specify a default value as shown below:

<h1>{{ { key: 'Resource::Key', defaultValue: 'Default Value' } | abpLocalization }}</h1>

To use interpolation, you must give the values for interpolation as pipe parameters, for example:

Localization data is stored in key-value pairs:

{
  //...
  AbpAccount: { // AbpAccount is the resource name
    Key: "Value",
    PagerInfo: "Showing {0} to {1} of {2} entries"
  }
}

So we can use this key like this:

<h1>{{ 'AbpAccount::PagerInfo' | abpLocalization:'20':'30':'50' }}</h1>

<!-- Output: Showing 20 to 30 of 50 entries -->

Using the Localization Service

First of all you should import the LocalizationService from @abp/ng.core

import { LocalizationService } from '@abp/ng.core';

class MyClass {
  constructor(private localizationService: LocalizationService) {}
}

After that, you are able to use localization service.

You can add interpolation parameters as arguments to instant() and get() methods.

this.localizationService.instant('AbpIdentity::UserDeletionConfirmation', 'John');

// with fallback value
this.localizationService.instant(
  { key: 'AbpIdentity::UserDeletionConfirmation', defaultValue: 'Default Value' },
  'John',
);

// Output
// User 'John' will be deleted. Do you confirm that?

To get a localized text as Observable use get method instead of instant:

this.localizationService.get('Resource::Key');

// with fallback value
this.localizationService.get({ key: 'Resource::Key', defaultValue: 'Default Value' });

Using the Config State

In order to you getLocalization method you should import ConfigState.

import { ConfigState } from '@abp/ng.core';

Then you can use it as followed:

this.store.selectSnapshot(ConfigState.getLocalization('ResourceName::Key'));

getLocalization method can be used with both localization key and LocalizationWithDefault interface.

this.store.selectSnapshot(
  ConfigState.getLocalization(
    {
      key: 'AbpIdentity::UserDeletionConfirmation',
      defaultValue: 'Default Value',
    },
    'John',
  ),
);

Localization resources are stored in the localization property of ConfigState.

See Also

What's Next?

Contributors


Last updated: March 24, 2020 Edit this page on GitHub

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