I am using uniswap v2 subgraph to get data. TokenDayData lets you search historically. I'm trying to query historical data for a token with this query:
{
tokenDayData(id: "0x56143e2736c1b7f8a7d8c74707777850b46ac9af-19086.058842592593") {
token {
id
}
}
}
and getting the response:
"data": {
"tokenDayData": null
}
How can I get real data?
I was just trying this myself and got this to work:
{
tokenDayDatas(
where: {
token: "0x1f9840a85d5af5bf1d1762f925bdaddc4201f984",
date_gt: 1661717376
},
orderBy: date,
orderDirection: asc) {
date
token {
id
symbol
}
volumeUSD,
untrackedVolumeUSD,
priceUSD,
open,
high,
low,
close
}
}
some of the examples here helped: https://docs.uniswap.org/sdk/subgraph/subgraph-examples
looks like you're using "tokenDayData" (which is what I used initially), but notice the working query uses "tokenDayDatas" (which is odd, but whatever)
Related
I have a graphql file with a date in ISO format. I would like to pass a variable instead of hardcoding the date. I would like to use Date.toISOstring() or some get current date method.
GRAPHQL FILE
let today = Date.toISOString() //or DateNow()
query guide {
tv {
guide(date: "2022-08-10T00:00:00Z <-replace--${today}") {
entries {
channel {
show{
......
}
}
}
}
}
}
Is this possible?
Use a GraphQL variable and pass it to your query. Here are the adjustment you have to make to the query. I am guessing the name of the date scalar here (DateTime), it might as well simply be String. Check the documentation of the API to get the correct name.
query guide($date: DateTime!) {
tv {
guide(date: $date) {
entries {
channel {
show{
......
}
}
}
}
}
}
If you use Svelte Apollo for example, you can pass the variables like this:
const guide = query(GUIDE_QUERY, {
variables: { date: new Date().toIsoString() },
});
I am trying to find out a way to fetch nearby events using GraphQL meetup.com API. After digging into the documentation for quite some time, I wasn't able to find a query that suits my needs. Furthermore, I wasn't able to find old, REST, documentation, where, the solution for my case might be present.
Thanks in advance !
This is what I could figure out so far, the Documentation for SearchNode is missing, but I could get id's for events:
query($filter: SearchConnectionFilter!) {
keywordSearch(filter: $filter) {
count
edges {
cursor
node {
id
}
}
}
}
Input JSON:
{ "filter" : {
"query" : "party",
"lat" : 43.8,
"lon" : -79.4, "radius" : 100,
"source" : "EVENTS"
}
}
Hope that helps. Trying to figure out this new GraphQL API
You can do something like this (customize it with whatever fields you want from Event):
const axios = require('axios');
const data = {
query: `
query($filter: SearchConnectionFilter!) {
keywordSearch(filter: $filter) {
count
edges {
cursor
node {
id
result {
... on Event {
title
eventUrl
description
dateTime
going
}
}
}
}
}
}`,
variables: {
filter: {
query: "party",
lat: 43.8,
lon: -79.4,
radius: 100,
source: "EVENTS",
},
},
};
axios({
method: "post",
url: `https://api.meetup.com/gql`,
headers: {
Authorization: `Bearer YOUR_OAUTH_ACCESS_TOKEN`,
},
data,
})
I'm not sure if it's a bug, but I'm not able to make GraphQL work in the Cornerstone template. I'm expecting an error or something getting returned at least, but nothing is being rendered at all from gql.
I am on the pages/product.html template, and I even tried this example from the docs:
---
product:
videos:
limit: {{theme_settings.productpage_videos_count}}
reviews:
limit: {{theme_settings.productpage_reviews_count}}
related_products:
limit: {{theme_settings.productpage_related_products_count}}
similar_by_views:
limit: {{theme_settings.productpage_similar_by_views_count}}
gql: "query productById($productId: Int!) {
site {
product(entityId: $productId) {
variants(first: 25) {
edges {
node {
sku
defaultImage {
url(width: 1000)
}
}
}
}
}
}
}
"
My goal is to have access to the paths/URL on each of the product's category because product.category is just an array of category names. Here's the query I am able to make work on the GraphQL playground (86 to be replaced by $productId in the front matter GraphQL query, I think?):
query getProductCategories {
site {
product(entityId: 86) {
categories {
edges {
node {
name
path
}
}
}
}
}
}
If there's no way around this, maybe I'll just try to do the fetching in the client side.
This now works correctly, as of 20-Sep-2021.
There was a bug, tracked as an issue here: https://github.com/bigcommerce/stencil-cli/issues/732 which has been resolved and closed.
I have a graphql endpoint where this query can be entered:
fragment ChildParts {
id
__typename
}
fragment ParentParts {
__typename
id
children {
edges{
node {
...ChildParts
}
}
}
query {
parents {
edges
nodes {
...ParentParts
}
}
}
}
When executed, it returns something like this:
"data": {
"edges": [
"node": {
"id": "<some id for parent>",
"__typename": "ParentNode",
"children": {
"edges": [
node: {
"id": "<some id for child>",
"__typename": "ChildNode"
},
...
]
}
},
...
]
}
Now, with apollo client, after a mutation, I can read this query from the cache, and update / add / delete any ParentNode, and also any ChildNode, but I have to go over the structure returned by this query.
Now, I'm looking for a possibility to get a list of ChildNodes out of the cache (which has those already, as the cache is created as a flat list), to make the update of nested data a bit easier. Is there a possibility of reading a query out of the cache, without having read the same query from the server before?
You can use the client's readFragment method to retrieve any one individual item from the cache. This just requires the id and a fragment string.
const todo = client.readFragment({
id,
fragment: gql`
fragment fooFragment on Foo {
id
bar
qax
}
`,
})
Note that id here is the cache key returned by the dataIdFromObject function -- if you haven't specified a custom function, then (provided the __typename and id or _id fields are present) the default implementation is just:
${result.__typename}:${result.id || result._id}
If you provided your own dataIdFromObject function, you'll need to provide whatever id is returned by that function.
As #Herku pointed out, depending on the use case, it's also possible to use cache redirects to utilize data cached for one query when resolving another one. This is configured as part of setting up your InMemoryCache:
const cache = new InMemoryCache({
cacheRedirects: {
Query: {
book: (_, args, { getCacheKey }) =>
getCacheKey({ __typename: 'Book', id: args.id })
},
},
})
Unfortunately, as of writing this answer, I don't believe there's any method to delete a cached item by id. There's on going discussion here around that point (original issue here).
I'm learning graphql and I think I've spot one flaw in it.
Suppose we have schema like this
type Hero {
name: String
friends: [Person]
}
type Person {
name: String
}
and two queries
{
hero {
name
friends {
name
}
}
}
and this
{
hero {
name
}
}
And a relational database that have two corresponding tables Heros and Persons.
If my understanding is right I can't resolve this queries such that for the first query the resulting sql query would be
select Heros.name, Persons.name
from Heros, Persons
where Hero.name = 'Some' and Persons.heroid = Heros.id
And for the second
select Heros.name, Persons.name from Heros
So that only the fields that are really needed for the query would be loaded from the database.
Am I right about that?
Also if graphql would have ability to return only the data that's needed for the query, not the data that's valid for full schema I think this would be possible, right?
Yes, this is definitely possible and encouraged. However, the gist of it is that GraphQL essentially has no understanding of your storage layer until you explicitly explain how to fetch data. The good news about this is that you can use graphql to optimize queries no matter where the data lives.
If you use javascript, there is a package graphql-fields that can simplify your life in terms of understanding the selection set of a query. It looks something like this.
If you had this query
query GetCityEvents {
getCity(id: "id-for-san-francisco") {
id
name
events {
edges {
node {
id
name
date
sport {
id
name
}
}
}
}
}
}
then a resolver might look like this
import graphqlFields from 'graphql-fields';
function getCityResolver(parent, args, context, info) {
const selectionSet = graphqlFields(info);
/**
selectionSet = {
id: {},
name: {},
events: {
edges: {
node: {
id: {},
name: {},
date: {},
sport: {
id: {},
name: {},
}
}
}
}
}
*/
// .. generate sql from selection set
return db.query(generatedQuery);
}
There are also higher level tools like join monster that might help with this.
Here is a blog post that covers some of these topics in more detail. https://scaphold.io/community/blog/querying-relational-data-with-graphql/
In Scala implementation(Sangria-grahlQL) you can achieve this by following:
Suppose this is the client query:
query BookQuery {
Books(id:123) {
id
title
author {
id
name
}
}
}
And this is your QueryType in Garphql Server.
val BooksDataQuery = ObjectType(
"data_query",
"Gets books data",
fields[Repository, Unit](
Field("Books", ListType(BookType), arguments = bookId :: Nil, resolve = Projector(2, (context, fields) =>{ c.ctx.getBooks(c.arg(bookId), fields).map(res => res)}))
)
)
val BookType = ObjectType( ....)
val AuthorType = ObjectType( ....)
Repository class:
def getBooks(id: String, projectionFields: Vector[ProjectedName]) {
/* Here you have the list of fields that client specified in the query.
in this cse Book's id, title and author - id, name.
The fields are nested, for example author has id and name. In this case author will have sequence of id and name. i.e. above query field will look like:
Vector(ProjectedName(id,Vector()), ProjectedName(title,Vector()),ProjectedName(author,ProjectedName(id,Vector()),ProjectedName(name,Vector())))
Now you can put your own logic to read and parse fields the collection and make it appropriate for query in database. */
}
So basically, you can intercept specified fields by client in your QueryType's field resolver.