I am beginner web developer. I make my first project in VUE.
I have this code:
<script type="text/ecmascript-6">
import axios from 'axios';
import Vue from 'vue';
import 'vuejs-datatable/dist/themes/bootstrap-4.esm';
import {
VuejsDatatableFactory,
IDataFnParams,
IDisplayHandlerParam,
ITableContentParam,
TColumnsDefinition,
VueDatatable
} from 'vuejs-datatable';
Vue.use(VuejsDatatableFactory, VueDatatable);
import Swal from 'sweetalert2';
export default {
props: {
fetchUrl: {type: String, required: true},
columns: {type: Array, required: true},
headers: {type: Object, required: true},
routeName: {type: String, required: true},
showUrl: {type: String, required: false},
},
data() {
return {
tableData: [],
url: '',
pagination: {
meta: {to: 1, from: 1}
},
offset: 4,
currentPage: 1,
perPage: 100,
sortedColumn: this.columns[0],
order: 'asc',
search: '',
pageOptions: [100, 200, 500, 1000],
}
},
watch: {
fetchUrl: {
handler: function (fetchUrl) {
this.url = fetchUrl
},
immediate: true
}
},
created() {
console.log(this.fetchUrl);
return this.fetchData()
},
computed: {
/**
* Get the pages number array for displaying in the pagination.
* */
pagesNumber() {
if (!this.pagination.meta.to) {
return []
}
let from = this.pagination.meta.current_page - this.offset
if (from < 1) {
from = 1
}
let to = from (this.offset * 2)
if (to >= this.pagination.meta.last_page) {
to = this.pagination.meta.last_page
}
let pagesArray = []
for (let page = from; page <= to; page ) {
pagesArray.push(page)
}
return pagesArray
},
/**
* Get the total data displayed in the current page.
* */
totalData() {
return (this.pagination.meta.to - this.pagination.meta.from) 1
}
},
methods: {
fetchData() {
let dataFetchUrl = `${this.url}&page=${this.currentPage}&column=${this.sortedColumn}&order=${this.order}&per_page=${this.perPage}&search=${this.search}`
axios.get(dataFetchUrl)
.then(({data}) => {
this.pagination = data
this.tableData = data.data
}).catch(error => this.tableData = [])
},
/**
* Get the serial number.
* @param key
* */
serialNumber(key) {
return (this.currentPage - 1) * this.perPage 1 key
},
/**
* Change the page.
* @param pageNumber
*/
changePage(pageNumber) {
this.currentPage = pageNumber
this.fetchData()
},
/**
* Sort the data by column.
* */
sortByColumn(column) {
if (column === this.sortedColumn) {
this.order = (this.order === 'asc') ? 'desc' : 'asc'
} else {
this.sortedColumn = column
this.order = 'asc'
}
this.fetchData()
},
handleSearch() {
this.fetchData()
},
handlePerPage($event) {
this.perPage = $event.target.value;
this.fetchData()
},
recordLink(id) {
return this.routeName `/${id.toString()}`
},
editRecordLink(id) {
return this.routeName `/${id.toString()}/edit`
},
showRecord(id) {
const recordLink = this.recordLink(id);
this.$router.push({path: recordLink});
},
editRecord(id) {
const editRecordLink = this.editRecordLink(id);
this.$router.push({path: editRecordLink});
},
deleteRecord(id) {
let self = this;
axios.post(this.$apiAdress '/api/' this.routeName '/' id '?token=' localStorage.getItem("api_token"), {
_method: 'DELETE'
})
.then(function (response) {
Swal.fire(
'Sukces!',
'Rekord usunięty poprawnie!',
'success'
)
self.fetchData();
}).catch(function (error) {
console.log(error);
self.$router.push({path: '/login'});
});
},
prepareRemove(id){
const removeId = id;
Swal.fire({
title: 'Czy na pewno',
text: "Chcesz usunąć ten rekord?",
type: 'warning',
showCancelButton: true,
confirmButtonColor: '#d33',
cancelButtonColor: '#3085d6',
confirmButtonText: 'Tak, usuń!',
cancelButtonText: 'Anuluj',
buttonsStyling: true
}).then(function (isConfirm) {
if(isConfirm.value === true) {
this.deleteRecord(removeId);
}
});
}
///
},
filters: {
columnHead(value) {
return value.split('_').join(' ').toUpperCase()
}
},
name: 'DataTable'
}
</script>
It's work fine. I have problem with prepareRemove(id). When I run this function after click on link <button @click="prepareRemove(data.id)">
I have sweetalert with question (it's ok). After confirm I have error:
Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'deleteRecord')
How can I repair it?
CodePudding user response:
This is an issue related with the this
binding. It's a common mistake to write a function declaration as a callback inside methods option. I'll recommend using arrow functions in those cases.
Swal.fire({
title: 'Czy na pewno',
text: "Chcesz usunąć ten rekord?",
type: 'warning',
showCancelButton: true,
confirmButtonColor: '#d33',
cancelButtonColor: '#3085d6',
confirmButtonText: 'Tak, usuń!',
cancelButtonText: 'Anuluj',
buttonsStyling: true
}).then((isConfirm) => {
// now 'this' depends on the lexical enviroment.
if(isConfirm.value === true) {
this.deleteRecord(removeId);
}
});