I am using bootstrap-vue tables selectable prop i can get the selected rows but that contain all the properties of the rows but i want only the id of the selected rows.
to do this tried this
getids(){
for (var i = 0; i <= this.selected.length; i++) {
this.filteredORD_NO.push(this.selected[i].id)
} }
where selected [] is the selected array which contain all properties of the row and filteredORD_NO[] is an array which contain ids extracted from the selected [] array. this does work when i call the function directly eg by btn , but shows "Error in v-on handler: "TypeError: Cannot read property 'id' of undefined" when i try to sed this data to the backend.
"
assignmethod() {
this.getids(),
this.WorkToteam[0] = this.filteredORD_NO,
this.WorkToteam[1] = this.selectedteam,
console.log(WorkToteam);
this.axios({
method: "POST",
url: "/path/to/backend",
data: this.workToteam,
headers: { Authorization: "Bearer " + localStorage.getItem("ikey") },
})
.then(
(response) => (
console.log("response"),
)
)
.catch((error) => console.log(error))
.finally(() => (this.loading = false));
},
filteredORD_NO must be an array
declaring like filteredORD_NO: [], solved the issue.
Related
I am trying to get products, then check if the product pId is in an array, and filter if it is.
I get an error when i soft refresh of 'TypeError: Cannot read properties of undefined' (reading 'products'), almost like my 'this.products' isnt populated yet when computed is trying to get the data. Tried adding some if statements to check data is there but no luck.
<script>
export default {
data() {
return {
popular_products: [],
products: [],
}
},
computed: {
bestsellers() {
const keywords = this.popular_products
let array = []
for (var index = 0; index < keywords.length; index++) {
const keyword = this.products.data.products.product.filter(
(product) => product.pId == keywords[index].ProductNumber
)
array = array.concat(keyword)
}
return array
},
},
mounted() {
axios
.get(
'https://myurl/admin/api/collections/get/popularproducts?token=account-9306f9192049d3c442e565f2de5372'
)
.then((response) => (this.popular_products = response.data.entries))
axios
.get('https://myurl/products.json')
.then((response) => (this.products = response))
},
}
</script>
The problem is with this line:
let keyword = this.products.data.products.product.filter(product => product.pId == keywords[index].ProductNumber);
more specific with this read: data.products.
You see, computed property bestsellers is evaluated before your axios calls are finished.
Because of that, Vue can't find products in data because your this.products doesn't have data key.
The best solution would be to change this assignment:
- .then(response => (this.products = response)); // delete this line
+ .then(response => (this.products = response.data.products)); // add this line
Update After comment.
if (this.products.product) {
return this.products.product.filter(...)
} else {
return []
}
I am trying to do a pagination but I can not put the dynamic total I am doing like this:
<v-pagination v-model="currentPage"
:page-count="total"
:classes="bootstrapPaginationClasses"
:labels="paginationAnchorTexts"
></v-pagination>
How you can see the total os in the :page-count, it is a dynamic total because I am getting data from database, my vue code is this one:
<script>
import vPagination from 'vue-plain-pagination';
export default {
created() {
this.getPosts();
},
methods: {
getPosts() {
fetch('/api/bank')
.then(response => response.json() )
.then(json => {
this.posts = json.data.data;
this.total = json.data.last_page;
this.current_page = json.data.current_page;
});
}
},
components: { vPagination },
data: function() {
return {
postsSelected: "",
posts: [],
currentPage: 1,
total: this.total,
bootstrapPaginationClasses: {
ul: 'pagination',
li: 'page-item',
liActive: 'active',
liDisable: 'disabled',
button: 'page-link'
},
paginationAnchorTexts: {
first: 'Primera',
prev: '«',
next: '»',
last: 'Última'
}
}
}
}
</script>
How you can see I am using fetch to get the data from database and then I am split it in different information like total and the I am using this information inside the data: function() {}.
How you can tell total it's like this: total: this.total because I want to get the total number but when I do that I am getting this error:
[Vue warn]: Invalid prop: type check failed for prop "pageCount". Expected Number with value NaN, got Undefined
and I think that it is because:
total: this.total in the data function() {} is bad or:
how can I put the dynamic variable total inside the
How could I fix it?
Thanks!
If you want to know the data retrieved from the API, you can console log the data returned like this:
getPosts() {
fetch('/api/bank')
.then(response => response.json() )
.then(json => {
console.log(json.data)
this.posts = json.data.data;
this.total = json.data.last_page;
this.current_page = json.data.current_page;
});
}
Also, you should not have data attribute and props attribute with the same name! So change the total data attribute to another name and initialize it with a value of 0 instead.
In fact, you don't need to care about passing the Prop total at all as your method getPosts is not dependent on the Prop! So you may just have total: 0 in data and that should fix your issues
I already initialize the data.
data () {
return {
current_product: {},
current_ID: '',
}
}
Then, I fetch data from a REST API on lifecycle created hook.
created () {
var skuID = this.$store.state.selected_productSKU.productSKU_ID
axios.get(`http://localhost:8081/api/products/${skuID}`)
.then(response => {
this.current_ID = response.data.product_ID
this.current_product = response.data
})
.catch(e => {
alert(e)
})
}
And finally, I use computed property to get some value
// THIS JUST RETURN ['XL', 'M']
focusedProduct_SKUS_NoDupSizes () {
var newArr = this.current_product.product_SKU.filter((sku, index, self) =>
index === self.findIndex(t => (
t.productSKU_size === sku.productSKU_size
))
)
var x = newArr.map(a => a.productSKU_size)
return x
}
The vue instance show expected result
But if i call {{ focusedProduct_SKUS_NoDupSizes }} in template.
It doesn't rendered.
The browser return error Error in render: "TypeError: Cannot read property 'filter' of undefined"
What is happening? My first guess is the computed property using the initial structure of current_product which is {} empty object. But isn't that how to initialize an object?
Because of:
computed:
// ...
focusedProduct_SKUS_NoDupSizes () {
var newArr = this.current_product.product_SKU.filter((sku, index, self) =>
^^^^^^^^^^^
You should initialize product_SKU with an empty array:
data () {
return {
current_product: {product_SKU: []}, // changed here
current_ID: '',
}
}
This is needed because the computed property will be executed right away, even before your Ajax gets a chance to return.
Declare it as empty so the computed doesn't throw an error. When the Ajax fulfills, it will recompute automatically.
Even though the Ajax is started at the created(), it won't return before the computed is executed for the first time. More details about this here.
I'm trying to iterate through a db object I fetch during created(), I get the values in a console.log but the v-for template part remains empty. My sub-question is : is this good practice ? I'm quite new to Vue and my searches on this issue make me think it's a lifecycle issue.
Thanks for the help.
TEMPLATE PART :
.content(v-for="(content, key, index) in contents")
h3 {{key}}
.line
| {{getValue(content)}} // this is blank
METHODS PART:
getValue(value) {
PagesService.fetchDataWrap({
id: value
}).then((response) => {
const test = response.data.values[0].value
console.log(test) //this is working and gives the right value
return test
})
},
getPage() {
PagesService.fetchPage({
id: this.$route.params.page
}).then((response) => {
this.name = response.data.result.name
this.langs = response.data.result.langs
this.project = response.data.result.parent
this.contents = response.data.result.values
})
this.getProject()
}
console.log(this.contents) result :
{__ob__: Observer}
footer: "5a29943b719236225dce6191"
header: "5a29a9f080568b2484b31ee1"
which is the values I want to send when v-for iterates on contents so the getValue can process it to fetch corresponding values
I wouldn't recommend attempting to output the value of an asynchronous method. It's highly unlikely that it will work correctly.
Instead, populate your contents array / object fully during the created hook. For example, this can replace the contents hash value with whatever comes back from fetchDataWrap...
getPage () {
PagesService.fetchPage({
id: this.$route.params.page
}).then(response => {
this.name = response.data.result.name
this.langs = response.data.result.langs
this.project = response.data.result.parent
let contents = response.data.result.values
Promise.all(Object.keys(contents).map(key => {
// map each key to a "fetchDataWrap" promise
return PageService.fetchDataWrap({
id: contents[key]
}).then(res => {
// replace the hash with the resolved value
contents[key] = res.data.values[0].value
})
}).then(() => {
// all done, assign the data property
this.contents = contents
})
})
}
Then you can trust that the content has been loaded for rendering
.content(v-for="(content, key, index) in contents")
h3 {{key}}
.line
| {{content}}
I'm kinda new to VueJS so I was hoping to get some help. I'm currently returning an array of json objects from a PHP file.
Example:
<?php
/*
Returns an array similar to this:
[
{name: 'foo'},
{name: 'bar'},
{name: 'banana'}
]
*/
echo json_encode(array_values($array));
?>
And I'm appending this array of objects to an already existing array of objects in Vue:
axios.post('http://localhost/get_array.php').then(response => {
// Append returned array to already existing array
for (var i = 0; i <= response.data.length - 1; i++) {
this.existingArray.push(response.data[i])
}
}).catch(e => {
console.log("Error")
})
Right now I'm appending the data with a for loop but I was wondering if VueJS has an in-built function that does this automatically without having to use the for loop?
You can use concat which returns a new concatenated array:
axios.post('http://localhost/get_array.php')
.then(response => {
this.existingArray = this.existingArray.concat(response.data)
})
.catch(e => {
console.log("Error")
})
Updating existingArray with the result of calling concat with the response data should trigger the update.