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Validate Duplicate Data Entry in Array - JavaScript

My problem is that I want to insert values that are not repeated when doing a push
This is my code :
addAddress: function() {
this.insertAddresses.Adress = this.address_address
this.insertAddresses.State = this.selectedStateAddress
this.insertAddresses.City = this.selectedCityAddress
if(this.insertAddresses.Adress !== "" && this.insertAddresses.State !== null && this.insertAddresses.City !== null) {
let copia = Object.assign({}, this.insertAddresses);
this.addresses.push(copia)
}
else
{
this.$message.error('Not enough data to add');
return
}
},
When adding a new element to my object, it returns the following.
When I press the add button again, it adds the same values again, I want to perform a validation so that the data is not the same. How could I perform this validation in the correct way?

Verify that the item doesn't already exist in the array before inserting.
You can search the array using Array.prototype.find:
export default {
methods: {
addAddress() {
const newItem = {
Address: this.address_address,
State: this.selectedStateAddress,
City: this.selectedCityAddress
}
this.insertItem(newItem)
},
insertItem(item) {
const existingItem = this.addresses.find(a => {
return
a.State === item.State
&& a.City === item.City
&& a.Address === item.Address
})
if (!existingItem) {
this.addresses.push(item)
}
}
}
}
On the other hand, if your app requires better performance (e.g., there are many addresses), you could save a separate dictonary to track whether the address already exists:
export default {
data() {
return {
seenAddresses: {}
}
},
methods: {
insertItem(item) {
const { Address, State, City } = item
const key = JSON.stringify({ Address, State, City })
const seen = this.seenAddresses[key]
if (!seen) {
this.seenAddresses[key] = item
this.addresses.push(item)
}
}
}
}
demo

check it:
let filter= this.addresses.find(x=> this.insertAddresses.State==x.State)
if (filter==null) {
this.$message.error('your message');
}
OR FILTER ALL
let filter= this.addresses.find(x=> this.insertAddresses.Adress==x.Adress && this.insertAddresses.State==x.State && this.insertAddresses.City==x.City)
if (filter==null) {
this.$message.error('your message');
}
``

Cannot read property 'affected_rows' of undefined when trying to run an Hasura mutation

I'm using apollo within my vue.js application, I'm currently trying to remove an object by running a mutation, here is the code :
this.$apollo.mutate({
mutation: require("../graphql/deleteTag.gql"),
variables: {
id: idToDelete,
},
update: (store, { data: { delete_tags } }) => {
if (delete_tags.affected_rows) {
const data = store.readQuery({
query: require("../graphql/fetchDevices.gql"),
});
data.device_id_to_tag_id = data.device_id_to_tag_id.filter((x) => {
return x.id != tag.device_id_to_tag_id.id;
});
store.writeQuery({
query: require("../graphql/fetchDevices.gql"),
data,
});
}
},
});
And my deleteTag.gql file :
mutation delete_tags($id: Int!){
delete_extras_taggeditem(where: { id: { _eq: $id } }) {
affected_rows
}
}
But when I run this the following error appears :
I don't really know what's going on because I followed the Hasura vue.js documentation...
Thanks in advance for your help !

You can specify the name of the returned key in graphql if you want your result data to be called just delete_extras instead of delete_extras_taggeditem:
mutation delete_tags($id: Int!){
delete_extras: delete_extras_taggeditem(where: { id: { _eq: $id } }) {
affected_rows
}
}
but right now, you query do not return you a

I believe you are missing optimisticResponse parameter in mutate. the "update" function takes 2 passes - first with data from optimisticResponse, and then the data from the actual mutation response.
e.g. something like...
this.$apollo.mutate({
mutation: require("../graphql/deleteTag.gql"),
variables: {
id: idToDelete,
},
optimisticResponse: {
delete_extras_taggeditem: {
__typename: 'extras_taggeditem',
id: -1,
affected_rows
}
},
update: (store, { data: { delete_extras_taggeditem } }) => {
if (delete_extras_taggeditem.affected_rows) {
const data = store.readQuery({
query: require("../graphql/fetchDevices.gql"),
});
data.device_id_to_tag_id = data.device_id_to_tag_id.filter((x) => {
return x.id != tag.device_id_to_tag_id.id;
});
store.writeQuery({
query: require("../graphql/fetchDevices.gql"),
data,
});
}
},
});
https://apollo.vuejs.org/guide/apollo/mutations.html#server-side-example
Also, generally speaking I would always return id in your responses back for any level of resource. Apollo relies on __typename + id to maintain and manipulate its cache.

Vuex Getters duplicating array values

I have a simple lesson creator where I allow teachers to make selections for various categories, those selections ids are collected and grouped together and I want to return them all at the end as a lesson plan.
However, I am having a strange problem that I can't figure out. My Vuex store shows the selections correctly, however my getter duplicates all of my arrays.
After selections are made, my Vuex store shows something like this through the Vue.js dev-tools plugin:
lesson_store:Object
lesson:Object
selected_event:1
selected_exploration:Array[1]
0:1
selected_extensions:Array[1]
0:1
selected_goals:Array[1]
0:54
selected_lexis:Array[1]
0:2
store.js state and getter:
const state = {
lesson: {
selected_event: '',
selected_exploration: [],
selected_extensions: [],
selected_goals: [],
selected_lexis: [],
}
};
getSelections(state) {
console.log('GETTER SELECTIONS', state.lesson);
return state.lesson
}
My call to getSelections from lesson.vue file:
<template><button #click="saveLesson">Save</button></template>
methods: {
saveLesson () {
console.log('GET RETURN OF SELECTIONS',this.$store.getters["getSelections"]);
},
}
Now my console output is:
lesson_store:Object
lesson:Object
selected_event:1
selected_exploration:Array[2]
0:1
0:1
selected_extensions:Array[2]
0:1
0:1
selected_goals:Array[2]
0:54
0:54
selected_lexis:Array[2]
0:2
0:2
The thing is, none of my other getters behave this way. This getter is super basic.
When I check out store and getSelections getter in the Vue.js dev-tools the values are correct and there are no duplicates.
Any advice or direction you can provide would be much appreciated.
UPDATE::::::
Actions and Mutations for Lesson_Store
// create mutations
const mutations = {
setSelectedEvent(state, payload) {
// state.lesson.selected_event = payload
if (state.lesson.selected_event === payload) {
state.lesson.selected_event = '';
} else {
state.lesson.selected_event = payload
}
},
setSelectedReading(state, payload) {
if (state.lesson.selected_reading === payload) {
state.lesson.selected_reading = '';
} else {
state.lesson.selected_reading = payload
}
},
setSelectedLexis(state, payload) {
// if event is already in array, then remove it with filter
// otherwise push it to the array
if (state.lesson.selected_lexis.includes(payload)) {
state.lesson.selected_lexis = state.lesson.selected_lexis.filter(function (item) {
return item !== payload;
});
} else {
state.lesson.selected_lexis.push(payload);
}
// state.lesson.selected_lexis = payload
},
setSelectedExplorations(state, payload) {
// if event is already in array, then remove it with filter
// otherwise push it to the array
if (state.lesson.selected_exploration.includes(payload)) {
state.lesson.selected_exploration = state.lesson.selected_exploration.filter(function (item) {
return item !== payload;
});
} else {
state.lesson.selected_exploration.push(payload);
}
// state.lesson.selected_lexis = payload
},
setSelectedQuestions(state, payload) {
// if event is already in array, then remove it with filter
// otherwise push it to the array
if (state.lesson.selected_questions.includes(payload)) {
state.lesson.selected_questions = state.lesson.selected_questions.filter(function (item) {
return item !== payload;
});
} else {
state.lesson.selected_questions.push(payload);
}
// state.lesson.selected_lexis = payload
},
setSelectedPerformances(state, payload) {
// if event is already in array, then remove it with filter
// otherwise push it to the array
if (state.lesson.selected_performances.includes(payload)) {
state.lesson.selected_performances = state.lesson.selected_performances.filter(function (item) {
return item !== payload;
});
} else {
state.lesson.selected_performances.push(payload);
}
},
setSelectedExtensions(state, payload) {
// if event is already in array, then remove it with filter
// otherwise push it to the array
if (state.lesson.selected_extensions.includes(payload)) {
state.lesson.selected_extensions = state.lesson.selected_extensions.filter(function (item) {
return item !== payload;
});
} else {
state.lesson.selected_extensions.push(payload);
}
},
setSelectedGoals(state, payload) {
// if event is already in array, then remove it with filter
// otherwise push it to the array
if (state.lesson.selected_goals.includes(payload)) {
state.lesson.selected_goals = state.lesson.selected_goals.filter(function (item) {
return item !== payload;
});
} else {
state.lesson.selected_goals.push(payload);
}
},
};
// create actions
const actions = {
setSelectedEvent({commit}, payload) {
commit('setSelectedEvent', payload);
},
setSelectedReading({commit}, payload) {
commit('setSelectedReading', payload);
},
setSelectedLexis({commit}, payload) {
commit('setSelectedLexis', payload);
},
setSelectedExplorations({commit}, payload) {
commit('setSelectedExplorations', payload);
},
setSelectedQuestions({commit}, payload) {
commit('setSelectedQuestions', payload);
},
setSelectedPerformances({commit}, payload) {
commit('setSelectedPerformances', payload);
},
setSelectedExtensions({commit}, payload) {
commit('setSelectedExtensions', payload);
},
setSelectedGoals({commit}, payload) {
commit('setSelectedGoals', payload);
},
};
All of these appear to be working correctly because my vuejs dev tools display all of the selection id's properly.

To anyone having similar issues where your dev tools store does not match your actual store values output, it is probably due to your code not updating the store values formally through the actions and mutations approach.
if this store value is ever updated directly without actions and mutations the value in the store will change, however, those updated values will not be detected by vuejs dev tools and your actual store data and dev tools data values will not match.

How to update values in table with this.state?

I make a component, which show information from database in table. But this information with filters.
Filtering can be by event type and by participant (id: integer type).
When I click the button, I call handleShowClick(). In this function I check: if value of type event isn't null, I get from database events with this type. if value of type event is null, I get all events.
After this I check a participant value. If value isn't null, I call function, which search which events are include this participant. Data from this.state.event show in table in another component.
I haven't problems with event type. But I have problem with participant. When I choose one of participant, table shows correct data for a split second. After this return to prev state (without filter by participants).
How can I fix this issue? I set state to event only in this component
class TestPage extends Component {
constructor(props) {
super(props);
this.state = {
event: [],
searchByType: null,
searchByParticipant: null,
participantToEvent: []
};
this.handleShowClick = this.handleShowClick.bind(this);
this.onHandleEventByTypeFetch = this.onHandleEventByTypeFetch.bind(this);
this.handleParticipantSearch = this.handleParticipantSearch.bind(this);
this.onHandleEventFetch = this.onHandleEventFetch.bind(this);
}
handleShowClick() { // onClick
if (this.state.searchByType !== null) {
this.onHandleEventByTypeFetch(); // select * from ... where type=...
} else {
this.onHandleEventFetch(); // select * from ...
}
if (this.state.searchByParticipant !== null) {
this.handleParticipantSearch();
}
}
handleParticipantSearch() {
const list = [];
this.state.participantToEvent.map(itemP => { // participantToEvent is binding table
if (itemP.parid === this.state.searchByParticipant) {
this.state.event.map(itemEvent => {
if (itemEvent.id === itemP.eventid) {
list.push(itemEvent);
}
});
}
});
console.log(list); // here I see array with correct result
this.setState({ event: list });
}
onHandleEventFetch() {
fetch( ... , {
method: 'GET'
})
.then((response) => {
if (response.status >= 400) {
throw new Error('Bad response from server');
}
return response.json();
})
.then(data => {
if (data.length === 0) {
alert('nothing');
} else {
this.setState({
event: data
});
}
});
}
onHandleEventByTypeFetch() {
fetch( ... , {
method: 'GET'
})
.then((response) => {
if (response.status >= 400) {
throw new Error('Bad response from server');
}
return response.json();
})
.then(data => {
if (data.length === 0) {
alert('nothing');
} else {
this.setState({
event: data
});
}
});
...
}
}
Structure of this.state.event:
[{id: 1, name: 'New event', participant: 5, type: 10}, ...]
Structure of this.state.participantToEvent:
[{id: 1, idparticipant: 5, idevent: 1}, ...]

this.setState(...this.state,{ event: list });
I think this would solve your problem. Because you clear every item except for {event:list} by not copying the previous state.
Edit:
You should put
...this.state
to onHandleEventByeTypeFetch and onHandleEventFetch. Without them when you click handleShowClick one of those two functions always work and clears searchByParticipant data from the state by not copying the previous state.
The reason for you see the correct data for a short time is all about async nature of the state.

Mongodb - Update property per object in array of object, Insert if doesn't exists

I wish to update a property per object in array of objects, but if some of the objects doesn't exists, insert the object instead.
Currently I used "upsert", which creates a new document when no document matches the query, unfortunately it is replacing a single item with my entire list.
Worth to mention that I am using mongoist to perform an async requests.
My code:
this.tokenArray = [
{ token: "654364543" },
{ token: "765478656" },
{ token: "876584432" },
{ token: "125452346" },
{ token: "874698557" },
{ token: "654364543" }
]
database.upsertDatebaseItem(this.tokenArray.map(x => { return x.token }), { valid : true }, 'Tokens');
async upsertDatebaseItem(itemKey, itemValue, collectionName) {
try {
await this.database[collectionName].update({ token : { $in: itemKey}}, { $set: itemValue }, {upsert : true} , {multi : true});
} catch (error) {
console.log(`An error occurred while attempting to update ${itemType} to the database: ${error}`);
return false;
}
}

Found the way to do it:
const bulkUpdate = this.tokenArray.map((x) => {
return {
"updateOne": {
"filter": { "token": x.token },
"update": { "$set": { "valid": true } },
"upsert": true
}
};
});
and:
this.database[collectionName].bulkWrite(bulkUpdate);

To upsert with mongoist, use the following:
var bulk = db.collection.initializeOrderedBulkOp()
for(var doc of docs) bulk.find( { _id: doc._id } ).upsert().updateOne(doc); // or use replaceOne()
await bulk.execute();
Converted to your case that would be
var bulk = db.collectionName.initializeOrderedBulkOp()
for(var tokenItem of tokenArray) bulk.find( { token : tokenItem.token } ).upsert().updateOne(tokenItem); // or use replaceOne()
await bulk.execute();