Updating property when promise is resolved

Expected result: data from response is displayed on modal

Actual result: data from response is not displayed on modal

Context: I'm using a form to submit data to a search function with a promise to get results from a db. When I submit, I also open a modal to display the results. The modal already opens with a property called allResults that is empty. I'm trying to understand how to bind the data that I get from the resolved promise to the allResults property connected to the modal. Or in other words, how to trigger a property "refresh" when promise gets resolved. When I implement either a watch or computed property they get called before the data is returned.

allResults

allResults

watch

computed

Properties:

data ()
return
allResults: ,
query: ''



The search function uses graphql apollo:

onSubmit ()
this.$apollo.query(
query: FIND_PEOPLE,
variables:
name: this.query

).then((response) =>
let a = response.data.given_names # array
let b = response.data.family_names # array
let c =

a.forEach(function(el)
if (!c.includes(el))
c.push(el)

)
var result = c.map(a => a.id);
b.forEach(function(el)
if (!result.includes(el.id))
c.push(el)

)

this.allResults.people =
this.allResults.people = c
this.allResults.clubs = response.data.clubs
);



The form:

<b-nav-form @submit="onSubmit">
<b-form-input size="sm" class="mr-sm-2" type="text" v-model="query" id="navbar-search-input" />
<b-button size="sm" class="my-2 my-sm-0" v-b-modal="'search-results-modal'" type="submit">Zoek</b-button>
</b-nav-form>


The modal:

<SearchResultsModal :all-results="allResults" :query="query"/>


The modal component:

<b-modal hide-footer ref="searchResultsModal" id="search-results-modal">
<p>"Searchterm: " + this.query</p>

<ul v-for="result of this.allResults.people" :key="result.id">
<li><b-link @click="selectResult('person', result.id)">result</b-link></li>
</ul>
</b-modal>


Props:

props: ['allResults', 'query'],


Additional context:

Please advise

SearchResultsModal

allResults

:all-results="allResults"

SearchResultsModal

allResults

prop

1 Answer
1

This is a data initialisation and reactivity issue.

You initially set allResults to an empty array, cool. But then you appear to be assigning it an object, indicated by your use of this.allResults.people.

allResults

this.allResults.people

Vue wasn't aware of the people property on allResults so it cannot react to it.

people

allResults

Initialise your data so Vue knows about its properties

data ()
return
query: '',
allResults: // an object, not an array
people: ,
clubs: // assuming this is also an array





See https://vuejs.org/v2/guide/reactivity.html

.then

allResults

Vue.set

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