I have pre response something like this
function middleware(req: HapiRequest, res: Hapi.ReplyNoContinue) {
res({data: "something"})
}
And later I need to access the object from route handler how can I do that?
When defining a route with a prerequisite, you may assign a name for each prerequisite. Like this:
server.route({
method: `get`,
path: `/pre`,
config: {
pre: [
{
method: function (request, reply) {
reply(`pizza`);
},
assign: `cheekibreeki`
}
]
},
handler: function (request, reply) {
reply(request.pre.cheekibreeki);
}
});
I made a route and assigned name cheekibreeki to it's prerequisite which replies pizza. Then the replied data inside a prerequisite is available in route handler inside a request.pre['assignedname'].
Another way is using request.app object.
If you don't want to proceed to the route handler, you must use reply().takeover() method.
Hope this helps.
Related
When trying to dispatch an action after updating the route using this.$router, the action uses the previous route parameters instead of using the current route parameters.
Suppose I want to move to the /home and currently, I am on /about and in the store action called I want to access the route name, but after pushing the new route and then calling the action, it is using the previous route only and not the updated one.
this.$router.push('/home', this.$store.dispatch('called'))
Also, I tried using this.$router.push('/home').then(this.$store.dispatch('called')), but it gives undefined error.
You could pass the old and new queries from the method:
methods: {
changeRoute() {
const queryNew = { id: 1 }; // Create new query
const queryOld = { ...this.$route.query }; // Clone old query
this.$router.push({ path: '/home', query: queryNew }); // Navigate
this.$store.dispatch('called', { queryNew, queryOld }); // Call the action
}
}
The action signature should look like:
actions: {
called({ commit }, { queryNew, queryOld }) {
console.log(queryNew, queryOld);
}
}
I have the following code in my HTML page
Gun.on('opt', function (ctx) {
if (ctx.once) {
return
}
this.to.next(ctx)
window.auth = ctx.opt.auth
ctx.on('get', function (msg) {
msg.auth = window.auth
this.to.next(msg)
})
ctx.on('put', function (msg) {
msg.put.auth = window.auth
this.to.next(msg)
})
})
var gun = Gun({
peers: ['http://localhost:8765/gun'],
auth: {
user: 'mroon',
password: 'titi'
}
})
On the server, I simply watch the requests
Gun.on('create', function(db) {
console.log('gun created')
this.to.next(db);
db.on('get', function(request) {
// this request contains the auth attribute from the client
this.to.next(request);
});
db.on('put', function(request) {
// this request does not contain the auth attribute from the client
this.to.next(request);
});
});
every time I query the graph with gun.get('someAttribute') the request on the server contains the auth attribute.
but when a gun.get('someAttribute').put({attribute: 'my new value'}) is called, the request on the server does not contain the auth attribute.
How can I add the auth attribute to the put request in such a way that all the peers will get it too?
#micha-roon you jumped straight to GUN's core/internal wire details, which is not the easiest thing to start with, but here is something I do that I'm guessing is what you are looking for:
(if not, please just comment & I'll update)
What this does is it adds a DEBUG flag to all outbound messages in GUN, you can change this to add other metadata or info
Gun.on('opt', function(root){
if(!root.once){
root.on('out', function(msg){
msg.DBG = msg.DBG || +new Date;
this.to.next(msg);
});
}
this.to.next(root);
})
Also another good reference: https://github.com/zrrrzzt/bullet-catcher
In my NuxtJS(v. 2.10.2) application, I have a URL like below where pid is a post's id.
/post?pid=5e4844e34202d6075e593062
This URL works fine and loads the post as per the value passed to the pid query parameter. However, user can add new post by clicking Add Post button on the application bar that opens a dialog. Once the user clicks add, a request to back-end server is made to save the request. And once successful, user is redirected to the new post using vue router push like below
.then(data => {
if (data) {
this.$router.push({ path: `/post?pid=${data.id}` });
}
})
The problem is, user is not redirected to the new post, only the query parameter pid is updated. I suspect VueJS does not acknowledge this as a different URL and hence does nothing.
How to fix this?
Update: As an alternative tried the syntax below but getting the same behavior.
this.$router.push({ path: "post", query: { pid: data.id } });
Say you have a component post.vue which is mapped with /post URL.
Now if you redirect the user to /post?pid=13, the post.vue component won't mount again if it's already mounted ie. when you are already at /post or /post?pid=12.
[1] In this case, you can put a watch on the route to know if the route has been changed.
watch: {
'$route.path': {
handler (oldUrl, newUrl) {
let PID = this.$route.query.pid
// fetch data for this PID from the server.
// ...
}
}
}
OR
[2] If the component post.vue is mapped with some route say /post.
You can also use the lifecycle -> beforeRouteUpdate provided by vue-router
beforeRouteUpdate (to, from, next) {
let PID = to.query.pid
// fetch data for this PID from the server.
// ...
next()
}
By changing the approach component data can be updated as per the new query string value. Here is how it can be done.
Rather than trying to push to the same page again with different query string. The query string pid itself can be watched for change and on update new data can be fetched and the component data can be updated. In NuxtJS(v. 2.10.2) apps, this can be achieved with watchQuery. watchQuery is a NuxtJS property which watches changes to a query strings. And once it detects the change, all component methods(asyncData, fetch, validate..) are called. You can read more https://nuxtjs.org/api/pages-watchquery/
As for the solution, pushing to the same page with new query string remains the same.
.then(data => {
if (data) {
this.$router.push({ name: 'post', query: { pid: data.id } });
}
})
However, on the page.vue, where the data is fetched from the server. We need to add watchQuery property.
watchQuery: ["pid"],
async asyncData(context) {
let response = await context.$axios.$get(
`http://localhost:8080/find/id/${context.route.query.pid}`
);
return { postData: response };
},
data: () => ({
postData: null
})
Now, everytime the query string pid will change asyncData will be called. And that is it. An easy fix to updating component data when the query string value change.
try this solution
.then(data => {
if (data) {
this.$router.push({ name: 'post', query: { pid: data.id } });
}
})
hints:
// with query, resulting in /register?plan=private
router.push({ path: 'register', query: { plan: 'private' } })
Use watchQuery property (https://nuxtjs.org/docs/2.x/components-glossary/pages-watchquery)
export default {
watchQuery: true,
data: () => ...
}
In case anybody was looking for this:
Query parameters specified as a string do not work when passed to a path parameter:
router.push({path: 'route?query=params'})
When you want you use them as a string, just pass the whole string as an argument, like so: router.push('route?query=params')
It'll then be automagically picked by router and navigation will happen.
try this :
.then(data => {
if (data) {
this.$router.push('/post?pid=' + data.id);
}
})
hope it works!!!
I'm trying to wait for certain strings in a sort of dictionary containing all the text for buttons, sections, labels etc.
I start out by sending a list of default strings to a controller that registers all the strings with my CMS in case those specific values do not already exist. After that I return a new object containing my "dictionaries", but with the correct values for the current language.
I run the call with an event listener that triggers a dispatch() on window.onload, and then add the data to a Vuex module state. I then add it to a computed prop.
computed: {
cartDictionary() {
return this.$store.state.dictionaries.myDictionaries['cart']
}
}
So now here's the problem: In my template i try to get the values from the cartDictionaryprop, which is an array.
<h2 class="checkout-section__header" v-html="cartDictionary['Cart.Heading']"></h2>
But when the component renders, the prop doesn't yet have a value since it's waiting for the AJAX call to finish. And so of course I get a cannot read property of undefined error.
Any ideas on how to work around this? I would like to have the dictionaries accessible through a global object instead of passing everything down through props since it's built using atomic design and it would be insanely tedious.
EDIT:
Adding more code for clarification.
My module:
const dictionaryModule = {
namespaced: true,
state: {
dictionaries: []
},
mutations: {
setDictionaries (state, payload) {
state.dictionaries = payload
}
},
actions: {
getDictionaries ({commit}) {
return new Promise((resolve, reject) => {
Dictionaries.init().then(response => {
commit('setDictionaries', response)
resolve(response)
})
})
}
}
}
My Store:
const store = new Vuex.Store({
modules: {
cart: cartModule,
search: searchModule,
checkout: checkoutModule,
filter: filterModule,
product: productModule,
dictionaries: dictionaryModule
}
})
window.addEventListener('load', function () {
store.dispatch('dictionaries/getDictionaries')
})
I think you can watch cartDictionary and set another data variable.
like this
<h2 class="checkout-section__header" v-html="cartHeading"></h2>
data () {
return {
cartHeading: ''
}
},
watch: {
'cartDictionary': function (after, before) {
if (after) {
this.cartHeading = after
}
}
}
Because this.$store.state.dictionaries.myDictionarie is undefined at the the begining, vuejs can't map myDictionarie['core']. That's why your code is not working.
You can do this also
state: {
dictionaries: {
myDictionaries: {}
}
}
and set the dictionaries key values during resolve.
I also would have liked to see some more of your code, but as i can't comment your questions (you need rep > 50), here it goes...
I have two general suggestions:
Did you setup your action correctly? Mutations are always synchronous while actions allow for asynchronous operations. So, if you http client returns a promise (axios does, for example), you should await the result in your action before calling the respective mutation. See this chapter in the official vuex-docs: https://vuex.vuejs.org/guide/actions.html
You shouldn't be using something like window.onload but use the hooks provided by Vue.js instead. Check this: https://v2.vuejs.org/v2/guide/instance.html#Lifecycle-Diagram
EDIT: As a third suggestion: Check, whether action and mutation are called properly. If they are handled in their own module, you have to register the module to the state.
I have multiple endpoints starting with /networks/{networkId}/*. I don't want to have logic to find a network and execute some extra validation on it, in every handler. Is there any way to solve this on a higher level? Ex. plugins/server method etc?
In every handler I have the following boilerplate code:
import networkRepo from 'common/repositories/network';
// handler.js
export default (req, reply) => {
return networkRepo.findById(req.params.networkId).then(network => {
// Logic to validate whether the logged user belongs to the network
// Logic where I need the network instance
});
}
The best situation would be:
// handler.js
export default (req, reply) => {
console.log(req.network); // This should be the network instance
}
Best way to achieve what you want is to either create a generic function that you can call first inside your handler or alternatively create an internal hapi route which will perform you look-up and return value to your other handler. Internal routes can then be accesses by server.inject from within your other handler, see options called allowInternals for more details, I can write pseudo-code to help!
[{
method: 'GET',
path: '/getNetworkByID/{id}',
config: {
isInternal: true,
handler: function (request, reply) {
return networkRepo.findById(req.params.networkId).then(network => {
// Logic to validate whether the logged user belongs to the network
// Logic where I need the network instance
reply(network.network);
});
}
}
},
{
method: 'GET',
path: '/api/networks/{id}',
config: {
isInternal: true,
handler: function (request, reply) {
request.server.inject({
method: 'GET',
url: '/getNetworkByID/' + request.params.id,
allowInternals: true
}, (res) => {
console.log(res.result.network) //network
});
}
}
}]