ui-router: Converting URL parameters

Question

ui-router: Converting URL parameters

Is there a way to seamlessly transform URL parameters? Let me illustrate with a scenario. Our URL structure is like this:

/shopping/nuts/:productId
/shopping/berries/:productId
/shopping/juice/:productId

The products in our app, fetched from an API, may look like this:

{ type: 'berry', price: 123, text: 'lorem ipsum', id: '12345' }

There's a discrepancy between the plural and singular forms: The URL uses the plural form (e.g. 'berries'), while the API delivers the singular form ('berry').

A portion of our state definition appears as follows:

.state('shop.product', {
  url: '/shopping/:type/:productId',
  templateUrl: 'type.html',
  controller: 'TypeController'
})

Issue: I have to call a function in every controller to transform the $state parameter into singular form (toSingular($stateParams.type)). And when creating links, I need to do the reverse transformation. This process is tedious and error-prone.

Therefore, my ideal solution would be:

For URL /shopping/berries/12345, $stateParams.type === 'berry'. When generating the URL using

ui-sref="shop.product({type: 'berry', id: '12345'})"

, it should return /shopping/berries/12345.

I've been struggling to find a suitable integration point for this logic. Any feedback is highly appreciated!

javascript angularjs url angular-ui-router

Answer 1

Answer №1

Incorporating a Unique Parameter Type

Explore this resource for more information on creating custom parameter types.

When registering a custom parameter type, remember that it must both encode and decode the value within the URL effectively.

For encoding, convert the internal representation (such as 'nut' or 'berry') into a string format suitable for display in the URL.

On the other hand, decoding involves taking the string from the URL and transforming it back into the original internal value.

 var productTypes = {
    berry: ['berries', 'berry'],
    nut: ['nuts', 'nut'],
    juice: ['juice'],
  }

  $urlMatcherFactoryProvider.type('productType', {
    encode: val => 
      productTypes[val][0],
    decode: string =>
      Object.keys(productTypes).find(key => productTypes[key].indexOf(string) !== -1),
  });

To see this concept in action, check out this interactive example on Plunker: Interactive Example Link

Answer 2

Incorporating a Unique Parameter Type

Explore this resource for more information on creating custom parameter types.

When registering a custom parameter type, remember that it must both encode and decode the value within the URL effectively.

For encoding, convert the internal representation (such as 'nut' or 'berry') into a string format suitable for display in the URL.

On the other hand, decoding involves taking the string from the URL and transforming it back into the original internal value.

 var productTypes = {
    berry: ['berries', 'berry'],
    nut: ['nuts', 'nut'],
    juice: ['juice'],
  }

  $urlMatcherFactoryProvider.type('productType', {
    encode: val => 
      productTypes[val][0],
    decode: string =>
      Object.keys(productTypes).find(key => productTypes[key].indexOf(string) !== -1),
  });

To see this concept in action, check out this interactive example on Plunker: Interactive Example Link

Answer 3

Answer №2

Suggested resolution:

In the case where your URL appears as /store/fruits/56789, it indicates that you have not included stateParams.type. When type is properly included, the URL should read as store/fruit/56789. For instance, constructing a URL like

store.product({type: 'a', id: '34'})

will result in a URL format of store/a/34. This pertains to the usage of stateParams within the URL structure. It seems likely that incorrect URLs are being generated for non-state pages, hence causing navigation issues. To address this, consider utilizing $urlRouterProvider.otherwise() for better clarity.

$stateProvider.state('store', {
  url: '/store'
})
.state('store.product', {
  url: '/:type/:id'
});
$urlRouterProvider.otherwise('/');

If an erroneous URL is provided, the redirection will default to '/'

Answer 4

Suggested resolution:

In the case where your URL appears as /store/fruits/56789, it indicates that you have not included stateParams.type. When type is properly included, the URL should read as store/fruit/56789. For instance, constructing a URL like

store.product({type: 'a', id: '34'})

will result in a URL format of store/a/34. This pertains to the usage of stateParams within the URL structure. It seems likely that incorrect URLs are being generated for non-state pages, hence causing navigation issues. To address this, consider utilizing $urlRouterProvider.otherwise() for better clarity.

$stateProvider.state('store', {
  url: '/store'
})
.state('store.product', {
  url: '/:type/:id'
});
$urlRouterProvider.otherwise('/');

If an erroneous URL is provided, the redirection will default to '/'

ui-router: Converting URL parameters

Answer №1

Incorporating a Unique Parameter Type

Answer №2

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