Dynamic nested routing in angularJs - angularjs

Trying to implement the following route system with angular stateProvider:
some_domain.com/abc/pqr/xyz
Issue is the number of levels after "some_domain.com" can vary. It can be like
some_domain.com/abc/pqr/xyz
some_domain.com/abc/pqr
some_domain.com/abc
some_domain.com/abc/pqr/xyz/1234
tried the many approaches for this in the state definition:
$stateProvider
.state('dummy', {
url: '/*',
templateUrl: 'views/home.html',
controller: 'LandingPage'
});
}]);
Can anybody help me regarding this?

As the parameters you are talking about are part of the route itself, so you cannot have a single route to handle all these cases. I can think of 2 ways to go about it :
Create a seperate route for each case.
Use optional parameters if you can modify the logic accordingly. If the parameters can be optional, they should sent as query parameters instead of making them part of URL as such. So, the URL becomes something like :
url: '/dummy?param1?param2?param3'

Related

AngularJS Route : set several parameters values for the same route

I was wondering if it was possible with AngularJS to do something like this :
I currently have a route with a first parameter called 'resource' that can be "device" or "group". There is a second parameter called 'id' but it doesn't matter. With the following code the route accepts anything as first parameter :
.when("/templates/:resource/:id", {
templateUrl: "/templates/views/navigation/templates.html",
controller: 'ctrlTemplates',
tab: "templates",
})
It makes me check in the controller if the value of the first parameter is either 'device' or 'group'. I would like to get rid of this verification part without creating two routes if possible :
.when("/templates/group/:id", {
templateUrl: "/templates/views/navigation/templates.html",
controller: 'ctrlTemplates',
tab: "templates",
})
.when("/templates/device/:id", {
templateUrl: "/templates/views/navigation/templates.html",
controller: 'ctrlTemplates',
tab: "templates",
})
So my question is, is it possible, using ONE route, to have several urls ? Something like this for instance :
.when("/templates/('device'|'group')/:id", {
templateUrl: "/templates/views/navigation/templates.html",
controller: 'ctrlTemplates',
tab: "templates",
})
So I don't have to check the value of the parameter afterwards in the controller myself using
if([('group', 'device'].includes($routeParams.resource))...
Do you know if it's possible ? Or a similar way to do it?
Best regards,
You can't do what you want. If you want to use ui-router you can pull it off but AngularJS ngRoute does not give you the ability to use regexes, or bind route parameters to types. If you are willing to switch to ui-router I can give you an example of how to do what you want.
I am willing to switch to ui-router if it can help me achieve what I want to do.
Also, if it supports types it's nice as I have parameters that must be integers. I am going to have a look at some examples.
If you have any example with regexes It would be nice !

How to resolve similar variables in $routeProvider?

For the following case :
$routeProvider
.when('/:city/:locality', {
controller: 'controller1'
})
.when('/:state/:city', {
controller: 'controller2'
});
Is there any way to distinguish between the two URLs on front-end to serve different controllers? For sake of scalability, please assume there can be other cases of similar variable URLs.
Edit: I cannot append constants in route because of SEO purposes.
Those 2 routes are exactly the same. They state that there are 2 path params that are dynamic.
You would neednto have something staric in the path for the route to know what your are trying to do.
Such as
/city/:city/:locality
And
/state/:state/:city

Create Angular Dynamic Route

I have a route string like the following var global_book_route = /books/:id specified in a variable.
I want to be able to use $route or $location to deep link to this route in a controller, is there a way to do this without re-specifying the url prefix?
This would work: var id=1; $location.path('books/'+id') -> '/books/1'
However, this does not: $location.path(global_book_route).search({id:1}) -> 'books/:id?id=1'
Is there a way I can use the route specified in the string to go to the correct location?
I think you are mixing up the route itself (/books/:id) with the representation of the route in your code.
For example, your global_book_route should be only "/books/".
Then, if you want to load a specific book, you can go the the location global_book_route + book_id as long as the route is declared in your code, like:
$routeProvider
.when('/Book/:bookId', {
templateUrl: 'book.html',
controller: 'BookController',
resolve: {
}
})
On a side node, when dealing with routes in Angular, it's really worth it to look into angular-ui, the ui-router offers a way better system to manage your routes and states.

Force ui-router to reload on querystring changes

I have a state defined something like this:
$stateProvider.state("app.search", {
url: "/search?q",
templateUrl: "App/Search.html",
controller: "SearchController as vm",
});
When I want to navigate to the search page and specify a search term, I can do something like this:
$location.path("search").search({ q: "stuff" });
Which effective resolves to a url along the lines of #/search?q=stuff. If I then change the search term to "things", the search page correctly reactivates and searches as expected.
However, I'd like to be able to specify "random" querystring parameters which have not been defined in my url, and then have those parameters also reload the state. (Note: this is why I'm using $location.path instead of $state.go to change the URL). So for example, if I was searching for food, my URL may be:
#/search?q=stuff&type=food
And then I may be filtering on spice levels, which may change the URL to:
#/search?q=stuff&type=food&spice=medium
(etc).
The problem though, is that since I haven't defined all the other query string parameters (type and spice in this example), ui-router doesn't reload my page.
I can't use $state.go with { reload: true } because it ignores the unspecified parameters.
Is there a way I can trigger a page reload using "unspecified" querystring parameters? This post suggests I can make the route /search* but that doesn't appear to work for me.
I haven't found a nice way to do this yet with ui-router. If you're willing to sacrifice your integrity a little bit you could utilize an alternate format for your query params. You can use a single http url query param object and list all your criteria using a custom format.
e.g.
/search/q?stuff:type=food:spice=cinnamon
The route setup would look like:
$stateProvider.state("app.search", {
url: "/search?q",
templateUrl: "App/Search.html",
controller: "SearchController as vm",
});
and to navigate with the extra parameters:
$state.go('app.dashboard', { q: 'stuff:type=dessert:spice=cinnamon'});
to access the parameters on the route:
$state.params.q
You can then just parse out the 'stuff' value and then each name/value pair that was passed in.
PS> I'm not sure whether the colon (:) separator is valid but it was used to illustrate the proposed idea.

Multiple optional parameters in Angular.js

I typically use querystrings for filtering results, eg:
URL: /Events/List?type=art&city=miami&life=present
I can put them in any order and get the same results, eg:
URL: /Events/List?city=miami&life=present&type=art
URL: /Events/List?life=present&type=art&city=miami
I can also make them optional, eg:
URL: /Events/List?type=art,
or: /Events/List?type=art&life=&city=
Question: How can I achieve this same "effect" with Angular.js routes? given the fact that parameters are passed all in a "RESTful" way in Angular
I was thinking in something like this:
URL: /Events/List/city/miami/life/present/type/art
Which I can achieve with a route like this:
.when('/Events/List/city/:city?/life/:life?/type/:type?', { ... }
But I already see many problems:
Order of parameters is important (I would have to define many times the route?)
Optional parameters will give a non intuitive URL,
eg: /Events/List/city/life/type/art,
and this is not the case in optional querystrings (they are more intuitive to read I think): eg: /Events/List/?city=&life=&type=art
If you want to use query strings angular has $location.search() that is both a setter and getter.
The difference between angular search and window version location.search is the query falls after the url hash and when setting or getting it uses objects rather than strings
See Using $location in developer's guide
You can inject $routeParams into your controller. Here's an example from the docs:
// Given:
// URL: http://server.com/index.html#/Chapter/1/Section/2?search=moby
// Route: /Chapter/:chapterId/Section/:sectionId
//
// Then
$routeParams ==> {chapterId:1, sectionId:2, search:'moby'}
http://docs.angularjs.org/api/ngRoute.$routeParams
I recently encountered a similar need (the ability to grab an unknown quantity of arguments off the path), and had started off by looking at $routeProvider. I ultimately abandoned that effort in favor of ui.router.
The most powerful (but possibly also tedious) approach for you would be to work with regex parameters. Consider the following (a snippet from some code I'm currently authoring):
$stateProvider
.state("list", {
url: "/",
controller: "PluginsListController",
templateUrl: "PluginsList.html"
})
.state("path", {
url: "/{plugin}/*path",
controller: "PluginDetailsController",
templateUrl: "PluginDetails.html"
})
;
The second state accepts two positional parameters: a plugin and a path. The path argument is a wildcard, that grabs everything after the immediately preceding slash. The idea here is that I can specify something like http://www.myfirsturl.com/app/MyFirstPlugin/level1/level2/level2.php, and end up with "MyFirstPlugin" in $stateParams["plugin"] and "level1/level2/level2.php" in $stateParams["path"]. It's up to the application logic to handle the long path parameter (and you would be likewise responsible for consuming this variable-length argument), but this approach does allow you to write a single state handler for an unknown number of url paths.

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