Develop Reference

How to show active state on hover/focus in two elements at the same time in Vue.js/Vuex

This is a Vue.js and Vuex related problem.
I'm building an aplication where I show a list of residences (ul -> li -> a) while at the same time showing those illustrations' position in an illustration, solved via SVG (active elements are path and polygon). If it was just the one element I could do show active state using only css, but because there are two active elements at the same time I need an event.
Previously I solved the issue by giving the residence, stored in Vuex, a hasFocus: false value, which I would change to true on mouseenter/focus and back to false on mouseout/focusout. With that I can add/remove a class has-focus to which I add the active state css. I have now redone the datastore to use Vuex ORM, after which I'm seeing worse frame rate drops when carying out the mutation.
Is there a better way of doing this than using a value in a Vuex (ORM) object model?
Some code:
In Vuex:
residences: [
{
id: 1,
hasFocus: false,
[…] // Other values, not relevant to this question
},
{
id: 2,
hasFocus: false
},
…
…
],
In ResidenceItem.vue:
<router-link
[…]
v-bind:class="{
'has-focus': residence.hasFocus === true,
}"
#mouseenter.native.stop="toggleFocus(true)"
#mouseout.native.stop="toggleFocus(false)"
#focus.native.stop="toggleFocus(true)"
#focusout.native.stop="toggleFocus(false)"
[…]
>
// Content
</router-link>
[…]
props: {
id: {
required: true,
},
},
methods: {
toggleFocus(focus) {
Residence.update({
where: this.id,
data: {
hasFocus: focus,
},
});
},
},

why should "hasFocus" be stored in vuex? is there a need to be?
if not, you should move it to ResidenceItem.vue's data().
i think it is a just temporary state on vue.
<router-link
:class="{
'has-focus': focused,
}"
#mouseenter.native.stop="focused = true"
#mouseout.native.stop="focused = false"
#focus.native.stop="focused = true"
#focusout.native.stop="focused = false"
[…]
>
...
data() {
return {
focused: false,
};
},
...
if hasFocus is needed in vuex (which i think it is a bad idea), you should use normal vuex state to store like focusedResidenceId: null.
I can provide more detail explanation if you need. Please let me know if you so.

How can I maintain previous state param on 404?

I am new to working with Angular and I need some help with router-ui package.
Several of my states are made up of a dynamic value like so:
.state('state-name', {
url: `${dynamicValue}/state-name`,
abstract: true,
template: '<ui-view/>',
data: {
layout: {
footer: false
}
},
resolve: {
context: resolveContext
},
});
This value is passed via radio buttons that the user selects an option from. This all works fine, but the problem I am having is, if that user enters a wrong URL after choosing a value, it redirects them back to the first radio option rather than maintaining their choice. This is due to conditions I have setup if the user does not choose an option.
E.g.
Available Options:
1. 1234
2. 5678
If I choose:
5678
It generates this URL:
domain.com/5678/state-name
If I trigger a 404:
domain.com/5678/state-name/xyxyxyxyxxy
It redirects to:
domain.com/1234/state-name
Rather than:
domain.com/5678/state-name/
I have tried to modify the otherwise() function, but not having much luck. How can I maintain the previously chosen option, which is permanent until they choose a different option? Would it be better to modify the state within the controller $onInit() function?

Try this approach to resolve this issue.
.state('parentState', {
url: `:id/state-name`,
abstract: true,
template: '<ui-view/>',
data: {
layout: {
footer: false
}
},
resolve: {
context: resolveContext
},
}).state('childState', {
url: `:id/state-name/xyxyxy`,
abstract: true,
template: '<ui-view/>',
data: {
layout: {
footer: false
}
},
resolve: {
context: resolveContext
},
});
So, the first option will take 'id' parameter dynamically.
You can call it by passing id parameter to state name in ui-sref. Let say
<a ui-sref="childState({'id':5678})">
<input type="radio" value="5678" />
</a>
Same way you can create for others or call it using ng-repeat.
I hope it helps.

How to pass multiple parameters to url using angular js?

I am a newbie to angular js .
Here in my project i want to pass multiple parameters in anchor tag .
So that i will get multiple params in address bar too.
I have tried this one but its not working at all.
Add New user
It is showing "http://localhost/Angular/#/edit-user/0",but i need to pass some more parameters.
Above is the code.
I want the url to be ""http://localhost/Angular/#/edit-user/0/add-user","
Here , am I doing anything wrong ?
Please suggest me .
Thank you.

You can do that like :
$state.go('editUser', {id: 0, pid: 0});
// or In your view :
<a ui-sref="editUser({id:0,pid:0})">Add New user</a>
In your config :
$stateProvider
.state('editUser', {
url: '/edit-user?id&pid',
views: {
'': {
templateUrl: 'users.html',
controller: 'MainCtrl'
},
},
params: {
id: null,
pid: null
}
})

AngularJS ui-sref external (absolute) link

I wrote a little angular app. I've got an array of menu items which I print in my template:
<nav id="menu">
<ul>
<li ng-repeat="i in menuItems"
ui-sref="{{ i | removeSpacesThenLowercase }}"
ui-sref-active="active">{{ i }}</li>
</ul>
</nav>
And in my app.js I declared my states using ui-router like:
.state('camera', {
url: '/selection',
templateUrl: '/views/selection.html',
uiShade: 'light back',
back: 'intro'
})
Internal URLs work just fine, but what if I want to do this?
.state('facebook', {
url: 'https://www.facebook.com/'
})
This obviously doesn't work. What would be the best approach to have some external (absolute) links in my template without having two separate arrays?

Ui-sref refers to a state. Your views are states. Externals sites aren't states, it's just some outside links.
I suggest you to refactor your menu generator to handle different type of menu entries :
state based link (link generated through ui-sref)
standard link (link generated through href, for external links, emails, etc)
Then you just have to populate menuItems with an array of different objects

I fixed this in my application using ng-if.
Example menu items:
$scope.navItems = [{
id: 1,
title: 'Internal Link',
href: null,
sref: 'internal-state'
},
{
id: 2,
title: 'External Link',
href: 'https:/google.co.uk',
sref: null
}];
Then in the HTML I set the ng-repeat on the <li> but include an <a> for href and one for sref, each with an ng-if.
<li ng-repeat="item in navItems">
<a ng-if="item.sref" ui-sref="{{item.sref}}">{{ item.title }}</a>
<a ng-if="item.href" href="{{item.href}}">{{ item.title }}</a>
</li>

I fixed this by creating a second array for the external links and an ng-click function.
$scope.elink = function(element) {
if (confirm("You're leaving the app, are you sure?")) {
window.location = element;
}
};

How to make Automated Dynamic Breadcrumbs with AngularJS + Angular UI Router

One key component to web applications is breadcrumbs/navigation. With Angular UI Router, it would make sense to put the breadcrumb metadata with the individual states, rather than in your controllers. Manually creating the breadcrumbs object for each controller where it's needed is a straight-forward task, but it's also a very messy one.
I have seen some solutions for automated Breadcrumbs with Angular, but to be honest, they are rather primitive. Some states, like dialog boxes or side panels should not update the breadcrumbs, but with current addons to angular, there is no way to express that.
Another problem is that titles of breadcrumbs are not static. For example, if you go to a User Detail page, the breadcrumb title should probably be the user's Full Name, and not a generic "User Detail".
The last problem that needs to be solved is using all of the correct state parameter values for parent links. For example, if you're looking at a User detail page from a Company, obviously you'll want to know that the parent state requires a :companyId.
Are there any addons to angular that provide this level of breadcrumbs support? If not, what is the best way to go about it? I don't want to clutter up my controllers - I will have a lot of them - and I want to make it as automated and painless as possible.
Thanks!

I did solve this myself awhile back, because nothing was available. I decided to not use the data object, because we don't actually want our breadcrumb titles to be inherited by children. Sometimes there are modal dialogs and right panels that slide in that are technically "children views", but they shouldn't affect the breadcrumb. By using a breadcrumb object instead, we can avoid the automatic inheritance.
For the actual title property, I am using $interpolate. We can combine our breadcrumb data with the resolve scope without having to do resolves in a different place. In all of the cases I had, I just wanted to use the resolve scope anyway, so this works very well.
My solution also handles i18n too.
$stateProvider
.state('courses', {
url: '/courses',
template: Templates.viewsContainer(),
controller: function(Translation) {
Translation.load('courses');
},
breadcrumb: {
title: 'COURSES.TITLE'
}
})
.state('courses.list', {
url: "/list",
templateUrl: 'app/courses/courses.list.html',
resolve: {
coursesData: function(Model) {
return Model.getAll('/courses');
}
},
controller: 'CoursesController'
})
// this child is just a slide-out view to add/edit the selected course.
// It should not add to the breadcrumb - it's technically the same screen.
.state('courses.list.edit', {
url: "/:courseId/edit",
templateUrl: 'app/courses/courses.list.edit.html',
resolve: {
course: function(Model, $stateParams) {
return Model.getOne("/courses", $stateParams.courseId);
}
},
controller: 'CourseFormController'
})
// this is a brand new screen, so it should change the breadcrumb
.state('courses.detail', {
url: '/:courseId',
templateUrl: 'app/courses/courses.detail.html',
controller: 'CourseDetailController',
resolve: {
course: function(Model, $stateParams) {
return Model.getOne('/courses', $stateParams.courseId);
}
},
breadcrumb: {
title: '{{course.name}}'
}
})
// lots more screens.
I didn't want to tie the breadcrumbs to a directive, because I thought there might be multiple ways of showing the breadcrumb visually in my application. So, I put it into a service:
.factory("Breadcrumbs", function($state, $translate, $interpolate) {
var list = [], title;
function getProperty(object, path) {
function index(obj, i) {
return obj[i];
}
return path.split('.').reduce(index, object);
}
function addBreadcrumb(title, state) {
list.push({
title: title,
state: state
});
}
function generateBreadcrumbs(state) {
if(angular.isDefined(state.parent)) {
generateBreadcrumbs(state.parent);
}
if(angular.isDefined(state.breadcrumb)) {
if(angular.isDefined(state.breadcrumb.title)) {
addBreadcrumb($interpolate(state.breadcrumb.title)(state.locals.globals), state.name);
}
}
}
function appendTitle(translation, index) {
var title = translation;
if(index < list.length - 1) {
title += ' > ';
}
return title;
}
function generateTitle() {
title = '';
angular.forEach(list, function(breadcrumb, index) {
$translate(breadcrumb.title).then(
function(translation) {
title += appendTitle(translation, index);
}, function(translation) {
title += appendTitle(translation, index);
}
);
});
}
return {
generate: function() {
list = [];
generateBreadcrumbs($state.$current);
generateTitle();
},
title: function() {
return title;
},
list: function() {
return list;
}
};
})
The actual breadcrumb directive then becomes very simple:
.directive("breadcrumbs", function() {
return {
restrict: 'E',
replace: true,
priority: 100,
templateUrl: 'common/directives/breadcrumbs/breadcrumbs.html'
};
});
And the template:
<h2 translate-cloak>
<ul class="breadcrumbs">
<li ng-repeat="breadcrumb in Breadcrumbs.list()">
<a ng-if="breadcrumb.state && !$last" ui-sref="{{breadcrumb.state}}">{{breadcrumb.title | translate}}</a>
<span class="active" ng-show="$last">{{breadcrumb.title | translate}}</span>
<span ng-hide="$last" class="divider"></span>
</li>
</ul>
</h2>
From the screenshot here, you can see it works perfectly in both the navigation:
As well as the html <title> tag:
PS to Angular UI Team: Please add something like this out of the box!

I'd like to share my solution to this. It has the advantage of not requiring anything to be injected into your controllers, and supports named breadcrumb labels, as well as using resolve: functions to name your breadcrumbs.
Example state config:
$stateProvider
.state('home', {
url: '/',
...
data: {
displayName: 'Home'
}
})
.state('home.usersList', {
url: 'users/',
...
data: {
displayName: 'Users'
}
})
.state('home.userList.detail', {
url: ':id',
...
data: {
displayName: '{{ user.name | uppercase }}'
}
resolve: {
user : function($stateParams, userService) {
return userService.getUser($stateParams.id);
}
}
})
Then you need to specify the location of the breadcrumb label (displayname) in an attribute on the directive:
<ui-breadcrumbs displayname-property="data.displayName"></ui-breadcrumbs>
In this way, the directive will know to look at the value of $state.$current.data.displayName to find the text to use.
$interpolate-able breadcrumb names
Notice that in the last state (home.userList.detail), the displayName uses the usual Angular interpolation syntax {{ value }}. This allows you to reference any values defined in the resolve object in the state config. Typically this would be used to get data from the server, as in the example above of the user name. Note that, since this is just a regular Angular string, you can include any type of valid Angular expression in the displayName field - as in the above example where we are applying a filter to it.
Demo
Here is a working demo on Plunker: http://plnkr.co/edit/bBgdxgB91Z6323HLWCzF?p=preview
Code
I thought it was a bit much to put all the code here, so here it is on GitHub: https://github.com/michaelbromley/angularUtils/tree/master/src/directives/uiBreadcrumbs

I made a Angular module which generate a breadcrumb based on ui-router's states. All the features you speak about are included (I recently add the possibility to ignore a state in the breadcrumb while reading this post :-) ) :
Here is the github repo
It allows dynamic labels interpolated against the controller scope (the "deepest" in case of nested/multiple views).
The chain of states is customizable by state options (See API reference)
The module comes with pre-defined templates and allows user-defined templates.

I do not believe there is built in functionality, but all the tools are there for you, take a look at the LocationProvider. You could simply have navigation elements use this and whatever else you want to know just inject it.
Documentation

After digging deep into the internals of ui-router I understood how I could create a breadcrumb using resolved resources.
Here is a plunker to my directive.
NOTE: I couldn't get this code to work properly within the plunker, but the directive works in my project. routes.js is provided merely for example of how to you can set titles for your breadcrumbs.

Thanks for the solution provided by #egervari. For those who need add some $stateParams properties into custom data of breadcrumbs. I've extended the syntax {:id} for the value of key 'title'.
.state('courses.detail', {
url: '/:courseId',
templateUrl: 'app/courses/courses.detail.html',
controller: 'CourseDetailController',
resolve: {
course: function(Model, $stateParams) {
return Model.getOne('/courses', $stateParams.courseId);
}
},
breadcrumb: {
title: 'course {:courseId}'
}
})
Here is an Plunker example. FYI.