I have an app that is built using Spray.io.
I have a number of routes and at the moment I am repeating some of the routing logic within each route. I want to extract this logic out to a route higher up the chain while keeping each route/endpoint in a logically separate class.
This is an example of what I am currently trying...
ServiceActor...
def receive = runRoute(v1Routes)
V1Routes.scala (trait extending HttpService with other route traits)
val v1Routes =
pathPrefix("v1") {
authenticate(...) {
myRoutes1 ~ myRoutes2
}
}
MyRoutes1.scala
val myRoutes1 =
pathPrefix("route1") {...}
MyRoutes2.scala
val myRoutes2 =
pathPrefix("route2") {...}
This compiles fine but the routes from MyRoutes1 and MyRoutes2 don't seem to get added into v1Routes as I would have hoped.
How do I implement this type of routing logic?
Thanks
Related
I am probably missing something here as I am new to F#, however, I need the following:
open Microsoft.AspNetCore.Mvc
[<ApiController>]
[<Route("[controller]")>]
type MyController () =
inherit ControllerBase()
//[<HttpGet(Name = "Ip")>] doesn't work neither.
[<HttpGet>]
[<Route("[controller]/[action]")>]
member _.Ip() =
"192.168.199.2"
The URL: https://localhost:5001/my/ip should return: 192.168.199.2.
The error message I am getting instead:
{"type":"https://tools.ietf.org/html/rfc7231#section-6.5.1","title":"One or more validation errors occurred.","status":400,"traceId":"00-389e8d2f6bc3a342a3754b5c5ce7915f-7e6e851c78f47c4f-00","errors":{"id":["The value 'ip' is not valid."]}}
I don't have much experience with ASP.NET Core, but I think the problem is that you have a route set at both the class and member level. These are additive, so the actual URL of your Ip action is currently https://localhost:5001/my/my/ip.
To fix this, remove the Route attribute entirely from the class level, or remove the [controller] prefix from your member-level route:
[<ApiController>]
[<Route("[controller]")>] // controller is specified here, so...
type MyController() =
inherit ControllerBase()
[<HttpGet>]
[<Route("[action]")>] // ...no controller specified here
member _.Ip() =
"192.168.199.2"
I have a pyramid application that uses a translation factory defined in this way:
from pyramid.i18n import get_localizer, TranslationStringFactory
from pyramid.threadlocal import get_current_request
def add_renderer_globals(event):
request = event.get('request')
if request is None:
request = get_current_request()
event['_'] = request.translate
event['localizer'] = request.localizer
tsf = TranslationStringFactory('climmob3')
def add_localizer(event):
request = event.request
localizer = get_localizer(request)
def auto_translate(string):
return localizer.translate(tsf(string))
request.localizer = localizer
request.translate = auto_translate
It works fine, however somewhere else I use jinja2 render() function to render small pieces of reusable code (snippets) as a jinja2 extension:
from jinja2 import Environment
jinjaEnv = Environment(extensions=['jinja2.ext.i18n'])
output = template.render(snippetVars=kw,renderer='snippet')
The problem here is that when I use the '_' translation function in the template code I get:
UndefinedError: 'gettext' is undefined
I saw some posts that maybe I need to use jinjaEnv.install_gettext_translations() but I cannot make it work. I tried:
jinjaEnv.install_gettext_translations(pyramid.il8n)
jinjaEnv.install_gettext_translations(tsf)
How can I integrate jinjaEnv.install_gettext_translations() with my pyramid translation factory?
Depending on your exact case, you could use pyramid_jinja2 or get inspiration from it. It creates a GetTextWrapper https://github.com/Pylons/pyramid_jinja2/blob/28944ce627745691ccd1603c56251e038aadd892/pyramid_jinja2/i18n.py that makes its way in the options passed when creating the Environment https://github.com/Pylons/pyramid_jinja2/blob/28944ce627745691ccd1603c56251e038aadd892/pyramid_jinja2/settings.py#L133
https://github.com/Pylons/pyramid_jinja2/blob/28944ce627745691ccd1603c56251e038aadd892/pyramid_jinja2/__init__.py#L394
https://github.com/Pylons/pyramid_jinja2/blob/28944ce627745691ccd1603c56251e038aadd892/pyramid_jinja2/__init__.py#L404-L405
The wrapper is needed because the localizer will change every request, depending on the user locale.
Or you can pass the gettext and ngettext arguments directly when you render. In you case, it would look something like:
localizer = request.localizer
def gt(message):
return localizer.translate(message, domain='your-domain')
def ngt(singular, plural, n):
return localizer.pluralize(singular, plural, n, domain='your-domain')
output = template.render(
snippetVars=kw,
renderer='snippet',
gettext=gt,
ngettext=ngt,
)
I know this is odd, but I'm trying to provide a pass through interface in a taglib that allows the caller to pass in any other tag to be displayed in a container with additional processing.
To this effect, I'm trying to dynamically call an arbitrary tag in an arbitrary namespace. This may be clearer by example.
GSP:
<myLib:myTag someProp="blah" anotherProp="blah2" size="80" namespace="g" tag="textField">
In my taglib, I'm trying to display the tag they pass.
Taglib:
def myTag = {
String id = //some processing, not specified by caller
attrs.put("id", id)
def namespace = attrs.remove("namespace")
def tag = attrs.remove("tag")
out << ?????
}
The problem comes after the out... I'm having trouble calling the tag. I've tried the following with the following errors
namespace.tag(attrs) //No signature of method: java.lang.String.tag()
namespace."${tag}"(attrs) //No signature of method: java.lang.String.textField()
"${namespace}"."${tag}"(attrs) //No signature of method: java.lang.String.textField()
This seems to work, but the method needs to support tags in other namespaces
g."${tag}"(attrs)
So the question is How can I use reflection to use a dynamically defined taglib?
I don't have them pass the fully formed tag in the body() because I need to interact with it in the taglib.
I believe the following works, I'm not completely certain this is the best answer, so will leave the question open for suggestions from others.
String namespace = attrs.remove("namespace")
String tag = attrs.remove("tag")
GrailsTagLibClass tagLibClass = grailsApplication.getTagLibClasses().find { it.namespace == namespace && it.hasTag(tag)}
def tagLibBean = grailsApplication.mainContext.getBean(tagLibClass.getFullName())
out << tagLibBean."${tag}"(attrs)
update: if i can achieve same result using a different approach, please enlighten me.
I'm using/learning laravel 3 while building my project. Before coding any page-content at all, I'm verifying if i can deploy everything as planned, since this project is an actual rewrite of a rather huge app which is seriously outdated in the techniques it uses.
I'm struggling at this last part, which is quite possibly the hardest challenge i'll face to setup my project.
URL:
site.com/shops/__identifier__/controller/action/params
The above is the uri i'm trying to code atm.
The _identifier_ part should become a model (eloquent based)
the shops is the base for nested controllers
ie:
controllers/
- shops/
- home.php
- contact.php
- products.php
- etc ....
Each existing uri shops/identifier is a real site on its own. (though it has a different domain offcourse)
I want all my nested shops controllers to know what shop they're working with. In fact, the identifier will be used to load the correct layouts, to render the correct images, contact details etc...
From what i've read, i'll need to use the IoC functionality to inject the dependency of my shop-model into the constructor of my controller.
this is what i have atm:
file:application/start.php
/**
* Register IoC container for my nested shop controllers
*/
IoC::register('controller: shop', function($controller, $identifier)
{
//also tried using same line without the \\
$class = '\\Shops_' . ucfirst($controller) . '_Controller';
return new $class($identifier);
});
file:application/routes.php
/**
* Register all shop routes
*/
Route::any('/shops/(:any)/(:any?)/(:any?)', function($identifier, $controller = "home", $method = "index", $params = array()){
if($controller === "index")
$controller = "home";
$controller = IoC::resolve('controller: shop', array($controller, $identifier));
return $controller;
});
shop base-controller located at application/libraries/controllers/shop.php
<?php
namespace Controllers;
use Base_Controller;
/**
* Shop controller
*/
class Shop extends Base_Controller
{
public function __construct($identifier){
/**
* #todo: load the shop model using the identifier
* possibly move this after the parent::__construct()
*/
parent::__construct();
}
}
file: applications/controllers/shops/home.php
<?php
/**
* #heads up: Shop_Controller is aliased in application/config/application.php
*/
class Shops_Home_Controller extends Shop_Controller
{
public function get_index(){
return ('test');
}
}
Problems:
when defining my routes for these nested shops controllers. Do i simply return the controller laravel should use to resolve the request, or do i trigger the action myself in the callback function in that route definition?
controllers aren't autoloading (when trying the implementation above), yet i'm using the correct conventions for those controllers (unless i'm missing something :-) ). I'm guessing this is because i'm using IoC, how do i cleanly implement this or what is my mistake?
how do i trigger the correct action? It should, as expected, trigger the corresponding HTTP-verb action, since my nested controllers are also RESTFUL-controllers.
extra question to keep things as clean as possible: 'index' defaults to home controller when not using IoC functionality. Is my solution (if-condition in routes.php) to mimic this functionality a clean one? or is there any better approach?
By all means:
If my approach is way off, please tell me, i'm a newbie at laravel, and it's the first framework i'm using, so i'm a newbie at frameworks in general.
I'd also like to apologize if my question isn't explained to well so feel free to ask extra info.
I tried my best at googling this problem, but couldn't find anything similar, which is a first, since all my other laravel problems were easily solved using google.
I'd kindly thank anyone taking the time to read this and even better send me in the right direction!
Ok, final solution, this is far from clean if you ask me, but it seems to work, at least as far as i've checked.
I'm also not to sure if there is an alternative, but due to lack of response and timepressure, i decided to go with this and keep fingers crossed :(.
//start.php
IoC::register('controller: shop', function($id, $controllerName){
//controller name is the name of the controller located in the shops map
$class = "Shops_" . ucfirst($controllerName) . "_Controller";
include(path('app') . 'controllers/shops/' . strtolower($controllerName) . '.php');
return new $class($id);
});
//routes.php
Route::any("shops/(:any)/(:any?)/(:any?)/(:all?)", function($id, $controller = "index", $action = "index", $params = ""){
if($controller === "index")
$controller = "home";
$params = explode('/', $params);
$controller = IoC::resolve("controller: shop", array($id, $controller));
$http_verb = Request::method();
/**
* Need to return this, and i now need to manually return every response in every action in every shop controller
*/
return call_user_func_array(array($controller, $http_verb . '_' . $action), $params);
});
so example given
class Shops_Home_Controller extends Shop_Controller
{
public function get_index(){
/**
* this works when doing things the usual way, but will not return any output
* when working with nested dependency injection
*/
$this->layout->nest('content', 'shops.index');
}
public function get_test(){
/**
* this needs to return layout object if it is to work with the nested dependency injection
*/
$this->layout->nest('content', 'shops.index');
}
}
I messed around with this a bit yesterday and failed miserably. I want to convert:
"/$controller/$action?/$id?"
To
#in psudo
"/$controller/$id?/$action?"
#ideal regex
"\/(\w+)(\/\d+)?(\/\w+)?"
The most obvious way failed "/$controller/$action?/$id?"
I can write the regex's to do it, but I am having trouble finding a way to using true regexs (I found RegexUrlMapping but could not find out how to use it), and also can't find documentation on how to assign a group to a variable.
My question is 2 parts:
How to I define a URL Resource with a true regex.
How to I bind a "group" to a variable. In other words if I define a regex, how do I bind it to a variable like $controller, $id, $action
I would also like to be able to support the .json notation /user/id.json
Other things I have tried, which I thought would work:
"/$controller$id?$action?"{
constraints {
controller(matches:/\w+/)
id(matches:/\/\d+/)
action(matches:/\/\w+/)
}
}
also tried:
"/$controller/$id?/$action?"{
constraints {
controller(matches:/\w+/)
id(matches:/\d+/)
action(matches:/\w+/)
}
}
The grails way to deal with this is to set
grails.mime.file.extensions = true
in Config.groovy. This will cause Grails to strip off the file extension before applying the URL mappings, but make it available for use by withFormat
def someAction() {
withFormat {
json {
render ([message:"hello"] as JSON)
}
xml {
render(contentType:'text/xml') {
//...
}
}
}
For this you'd just need a URL mapping of "$controller/$id?/$action?"
I'm not aware of any way to use regular expressions in the way you want in the URL mappings, but you could get a forward mapping working using the fact that you can specify closures for parameter values that get evaluated at runtime with access to the other params:
"$controller/$a?/$b?" {
action = { params.b ?: params.a }
id = { params.b ? params.a : null }
}
which says "if b is set then use that as the action and a as the id, otherwise use a as the action and set id to null". But this wouldn't give you a nice reverse mapping, i.e. createLink(controller:'foo', action:'bar', id:1) wouldn't generate anything sensible, you'd have to use createLink(controller:'foo', params:[a:1, b:'bar'])
Edit
A third possibility you could try is to combine the
"/$controller/$id/$action"{
constraints {
controller(matches:/\w+/)
id(matches:/\d+/)
action(matches:/\w+/)
}
}
mapping with a complementary
"/$controller/$action?"{
constraints {
controller(matches:/\w+/)
action(matches:/(?!\d+$)\w+/)
}
}
using negative lookahead to ensure the two mappings are disjoint.