CouchDB Query View with Multiple Keys Formatting - view

I'm having a problem getting a couchdb view to return the proper documents when using multiple keys.
This works fine, returning the documents that match:
GET http://example.com:5984/myDb/_design/myFilters/_view/getItemByForeignKeyId?key=abc123
This returns returns all documents in the view, matching or not:
GET http://example.com:5984/myDb/_design/myFilters/_view/getItemByForeignKeyId?keys=%5B%22abc123%22%5D
I'm usually very good at hunting down my answers. But, CouchDB documentation is very clear on the format for using multiple keys. I've seen some use the ?keys=[123,123] and i've also seen ?keys="abc","abc".
If anyone can offer any clarification on the 'proper' format and encoding of multiple key queries for CouchDB using a GET method, I would be extremely appreciative.

To get multiple keys from a view, you need to do a post request and submit the keys in the request body. Your HTTP request will look like this:
POST /myDb/_design/myFilters/_view/getItemByForeignKeyId
Content-Type: application/json
{
"keys" : [
"abc",
"123"
]
}

function(doc){
{
if([doc.key1, doc.key2])
emit([doc.key1, doc.thingYouWantToKnow]);
}
}
and in the query string, at the end
?key=["key1Value", "key2Value"]
Notice that it is key=[], not keys=[] !!!!!!!!!

Not saying it's correct, but you can actually do it via query string as well. The array enclosing brackets should not be encoded. E.g. this works for me:
http://localhost:5984/test/_design/artists_albums/_view/albums_by_artist?keys=[%22Super%20bad%20artist%22,%20%22Fake%20artist%201%22]

Related

AWS AppSync - formatting hardcoded JSON data in response mapping template

I need a GraphQL query returning hardcoded informations as JSON response.
In the AppSync GraphQL schema, I added the following query:
type Query {
getHealthCheck: AWSJSON
}
My response mapping template where the values are hardcoded is the following:
$util.toJson({"version": "0.1.0"})
However, as the response of the query, I get a string instead of a proper JSON, i.e.:
{
"data": {
"getHealthCheck": "{\"version\":\"0.1.0\"}"
}
}
How can I modify the response mapping template to get a proper JSON? I tried several utils but I'm a bit lost with the data structures in VTL.
I don't think this is possible.
If you think about it, it goes against the idea of even having a GraphQL schema to then return essential arbritrary JSON.
I believe that AWSJSON will parse stringified JSON for inputs, but serialize to stringified JSON for outputs.
There's an answer to an other question that might give some ideas of how to work around this. Other than that, it seems your client will need to parse the JSON.

Elastic vector tile api - field wildcard in request body

I have certain fields named accordingly: attr_name, attr_type, ... and I want them all embedded in the hits layer of the vector tile.
After reading the docs, I would form the body as follows with a wildcard.
{
"fields": ["attr_*"]
}
However that returns none of the fields. What am I doing wrong?
You are not doing anything wrong, unfortunately it seems to be a bug and wildcards are not working in this API. I have opened an issue to address it:
https://github.com/elastic/elasticsearch/issues/85592

How to submit queries from the elastic cloud api console?

I'm new to the elastic-cloud interface. It allows to chooose operations get, post, put and del. I'm trying to submit queries, but I don't know the precise syntax. For instance:
tweet/_search?q=something
works, but:
tweet/_search?q={ "match_all": {} }
does not, returning a parser error. I have tried with double quotes, but it seems that then it searches for the query as a string.
The preferred way to test the search APIs are using the POST method, GET API in some case, gives even incorrect search results as it ignores the search and brings the top 10 search results for match_all query.
Elasticsearch supports both methods GET and POST to search but using the GET method which has payload information isn't common on modern app-severs, although Elasticsearch implemented it requires carefully crafting your queries.
Still, if you want to use the GET API, then for complex queries its better to send it as part of request body, I know it sounds weird to send a body to GET request but it works 😀 .

How to send graphql query by postman?

I use
POST type
URL http://######/graphql
Body:
query: "query: "{'noteTypes': {'name', 'label', 'labelColor', 'groupName', 'groupLabel', 'imageUrl'}}"
But it return
"message": "Must provide query string."
There's a better way to do it using the REST client Insomnia
Docs are here, how to send graphql queries: https://support.insomnia.rest/article/61-graphql
Below are the steps for postman
Step 1.
Run the GraphiQL in Chrome, open the Chrome Dev Console, click the Network tab, and make the query from graphiql, when you make the query, network tab will show the graphql request...
Step 2.
From the graphql request copy the request query, Select the Copy as cURL (cmd)
Step 3.
Open Postman, In the Top-Left click on the Import button, after you click Import you have to click the Paste Raw Text, and paste the copied cURL request as done in step2 after it's done click the Import
Step 4.
Postman is ready to send the Graphql request, Just Click on the Send Button, you will see the Response in the Response Box in body as below
Step 5.
To see how the query is being sent click on the Body tab next to Headers, you will get know how to provide the fields from postman in JSON format.
e.g: edges {\n node {\n id\n jobId\n }\n, If you want to view another field then you need to add it in with the suffix \n
like if need name then : edges {\n node {\n id\n jobId\n name\n }\n
\n here just means to represent a new line. Instead, you can make it simpler by providing a clear and illustrative JSON like below
===========================================================================
Note: The body type must be raw with application/json content-type. So, the query must be a valid JSON with quotes ".."
{
"query":"{viewer {user {edges {node {id jobId name }}}}}"
}
===========================================================================
you can directly start from step 5 if you know how to send the query in body and other things too that needs to be required while making a request from postman
With simplified JSON
You don't need INSOMNIA in case the GraphQL server responds to Content-type: application/graphql or postman.setEnvironmentVariable,
Just do it:
In Headers tab:
Content-Type: application/graphql
In Body tab, "raw" selected, put your query
Adding this for anyone searching on the topic ... you can utilize and test GraphQL calls far better and more easily with Insomnia:
https://insomnia.rest
It's been fantastic for GraphQL development.
There's a simple way to do it. Use a pre-request script to stringify the payload (source).
Step 1.
In the body of the request put a placeholder for the payload.
{
"query":{{query}}
}
Step 2.
Create the payload in the pre-request script and store it in an environment variable.
postman.setEnvironmentVariable("query", JSON.stringify(
`
{
search(query: "test", type: ISSUE, first: 10) {
issueCount
edges {
node {
... on Issue {
title
id
state
closed
repository {
name
}
}
}
}
}
}
`
));
That's it.
UPDATE 8-2019 - I know this is old, but regarding POSTMAN, if you haven't figured it out already, they do have a graphql (beta) option for posting body. There is no need to add any additional headers.
UPDATE 2:
It's not practical use POSTMAN, because the are working yet in a easy way to add headers, that take longtime, and i think POSTMAN is not made for work naturally with graphql,
you can follow the progress about that here:
https://github.com/postmanlabs/postman-app-support/issues/1669
I recommend to use another packages plugin like:
the best (like postman , but profile and sync price 5$ monthly):
https://insomnia.rest/
others:
https://github.com/andev-software/graphql-ide
https://github.com/imolorhe
for graphiql (no add headers possibility) you need to set three things (it's not easy to type):
Header:
Content-Type: application/json
Body:
Choose Ray < optiongroup
Choose JSON (application/json) < selectbox
Compose javascript object with "query" and the "value" of your graph query. Like all objects in js it'sneeded the propery and the value , in this case "quote" is the property, the value must be with double quotes. Inside the value (graphl string) you dont compose js objects, so you dont need use doble quotes, it's just a string.
{"query":"{ allQuotes { text } }" }
the problem is you need type all in a single line, no like grapIql... there is a post requirement in postman github so is easy work with graphql:
Postman just released inbuilt GraphQL support in version 7.2.
This version supports
Sending GraphQL queries in request body as POST requests
Support for GraphQL variables
Creating APIs in Postman with GraphQL schema type
Query autocompletion integrated with user defined GraphQL schemas
Please give it a try and give us your feedback on the tracking thread on our community forum
I faced the same problem when I try to used graphQl query using POSTMAN,
In POSTMAN send data from the raw tab with json type.
Query Command:
{"query":"{user(id:902){id,username,DOB}}"}
Mutations Command:
{ "query": "mutation {createMutations(reviewer:36, comments:\"hello\",data_id: 1659, approved: true ){id}}" }
#commnent: String Type
#data_id:Int Type
#approved:Boolean Type
If you're using Visual Studio, I have written a plugin to convert GraphQL to Restful body
https://marketplace.visualstudio.com/items?itemName=orasik.graphql-to-rest-queries
Postman has recently launched its out of box support for GraphQL: https://blog.getpostman.com/2019/06/18/postman-v7-2-supports-graphql/
Below is the screenshot of testing GraphQL locally:
Note: Running GraphQL locally using spring-boot https://www.baeldung.com/spring-graphql
Deriving from Estevão Lucas' answer.
You can also use header Content-type: application/json on postman
And define the body with:
{
"query": "{ your_query }"
}
This is easily constructed on the client side to form a request payload.
e.g.
Output:
Checkout https://github.com/hasura/graphqurl - curl for GraphQL:
CLI for making GraphQL queries with autocomplete
Run GraphiQL locally against any endpoint (with custom headers)
Use as a library with nodejs or from the browser
Supports subscriptions
I am one of the authors.
gq https://gentle-anchorage-72051.herokuapp.com/v1alpha1/graphql -i
IF we can pass header type, Then add the header Content-type: application/graphql
Below link can be used as reference:
link description here
By adding header we can run graphql query in the postman
Content-type: application/graphql

How can I use a list function in CouchDB to generate a valid (/normal) ViewResults object?

I have a simple problem I need to solve, and list functions are my current attempt to do so. I have a view that generates almost what I need, but in certain cases there are duplicate entries that make it through when I send in edge-case parameters.
Therefore, I am looking to filter these extra results out. I have found examples of filtering, which I am using (see this SO post). However, rather than generate HTML or XML or what-have-you, I just want a regular ol' view result. That is, the same kind of object that I would get if I queried CouchDB without a list function. It should have JSON data as normal and be the same in every way, except that it is missing duplicate results.
Any help on this would be appreciated! I have tried to send() data in quite a few different ways, but I usually get that "No JSON object could be decoded", or that indices need to be integers and not strings. I even tried to use the list to store every row until the end and send the entire list object back at once.
Example code (this is using an example from this page to send data:
function(head, req) {
var row; var dupes = [];
while(row=getRow()) {
if (dupes.indexOf(row.key) == -1) {
dupes.push(row.key);
send(row.value);
}
};
}
Lastly, I'm using Flask with Flask-CouchDB, and I'm seeing the aforementioned errors in the flask development server that I'm running.
Thanks! I can try to supply more details if need be.
Don't you need to prepend a [, send a , after each row value except the last, and end with ]? To actually mimic a view result, you'd actually need to wrap that in a JSON structure:
{"total_rows":0,"offset":0,"rows":[<your stuff here>]}

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