graphql-query-builder-v2

graphql-query-builder-v2

Since graphql-query-builder seems to no longer be actively maintained, I have forked it. Nothing much has changed except the ability to use null and undefined values in the arguments. You are also allowed to not execute .find

API is unchanged.

Working examples in v2

let query =
    new QueryBuilder(
        "functionName",
        {
            name: null
        }
    )

Output

functionName( name: null )

With .find

let query =
    new QueryBuilder(
        "functionName",
        {
            name: null
        }
    )
query.find([
    "_id",
    "name"
])

Output

functionName( name: null ) {
    _id,
    name
}

With enums

let query =
    new QueryBuilder(
        "functionName",
        {
            status: QueryBuilder.Enum('draft')
        }
    )

Output

functionName( status: draft )

Combining to create graphql-upload example

As I have recently started using graphql-upload, I am sharing how this package can also be used to create a valid FormData query.

const QueryBuilder = require("graphql-query-builder-v2");

// The wrapping "mutation"
let mutation = new QueryBuilder("mutation");
mutation.filter({
	$image: QueryBuilder.Enum("Upload")
});

// Nested data within actual_query
const nested = {
	data1: "stuff",
	image: QueryBuilder.Enum("$image")
};
// The actual query we want to run
let actual_query = new QueryBuilder("imageUpload");
actual_query.filter({
	_id: 1,
	display_name: "example",
	nested
});
// putting the actual query into the wrapping mutation
mutation.find([
	actual_query
]);

let form_data = new FormData();

const operations = {
    query: mutation_query.toString(),
    variables: {
        image: null
    }
};
form_data.append("operations", JSON.stringify(operations));

const map = {
    "0": ["variables.image"]
};
form_data.append("map", JSON.stringify(map));

form_data.append("0", image_file); // image_file is variable that is holding your File/Blob

Output

mutation output

mutation($image: Upload) {
	imageUpload(
		_id: 1, 
		display_name: "example", 
		nested: {
			data1: "stuff", 
			image: $image
		})
}

Install

Use this instead of the install below.

npm install graphql-query-builder-v2

---

---

graphql-query-builder

a simple but powerful graphQL query builder

info:

tests:

quality:

If this was helpful, ★ it on github

tested on NodeJS and Webpack

Demo / Sandbox :thumbsup:

Install

npm install graphql-query-builder

Api

const Query = require('graphql-query-builder');

constructor

query/mutator you wish to use, and an alias or filter arguments.

Argument (one to two)	Description
String	the name of the query function
* String / Object	(optional) This can be an alias or filter values

let profilePicture = new Query("profilePicture",{size : 50});

setAlias

set an alias for this result.

Argument	Description
String	The alias for this result

profilePicture.setAlias("MyPic");

filter

the parameters to run the query against.

Argument	Description
Object	An object mapping attribute to values

profilePicture.filter({ height : 200, width : 200});

find

outlines the properties you wish to be returned from the query.

Argument (one to many)	Description
String or Object	representing each attribute you want Returned
...	same as above

    profilePicture.find( { link : "uri"}, "width", "height");

toString

return to the formatted query string

  // A (ES6)
  `${profilePicture}`;
  // B
  profilePicture+'';
  // C
  profilePicture.toString();

run samples

node example/simple.js

Example

var Query = require('graphql-query-builder');

// example of nesting Querys
let profilePicture = new Query("profilePicture",{size : 50});
    profilePicture.find( "uri", "width", "height");
    
let user = new Query("user",{id : 123});
    user.find(["id", {"nickname":"name"}, "isViewerFriend",  {"image":profilePicture}])
    
    console.log(user)
    /*
     user( id:123 ) {
    id,
    nickname : name,
    isViewerFriend,
    
    image : profilePicture( size:50 ) {
        uri,
        width,
        height
    }
  }
    */
    
// And another example

let MessageRequest = { type:"chat", message:"yoyo",
                   user:{
                            name:"bob",
                            screen:{
                                    height:1080,
                                    width:1920
                                    }
                    },
                    friends:[
                             {id:1,name:"ann"},
                             {id:2,name:"tom"}
                             ]
                    };
                    
let MessageQuery = new Query("Message","myPost");
    MessageQuery.filter(MessageRequest);
    MessageQuery.find({ messageId : "id"}, {postedTime : "createTime" });
    
    console.log(MessageQuery);
    
    /*
    myPost:Message( type:"chat",
                    message:"yoyo",
                    user:{name:"bob",screen:{height:1080,width:1920}},
                    friends:[{id:1,name:"ann"},{id:2,name:"tom"}])
        {
            messageId : id,
            postedTime : createTime
        }
    */

    // Simple nesting
    
    let user = new Query("user");
        user.find([{"profilePicture":["uri", "width", "height"]}])
    
    /* 
    user {
      profilePicture {
        uri,
        width,
        height
       }
     }
    */ 
    
    // Simple nesting with rename
    
    let user = new Query("user");
        user.find([{"image":{"profilePicture":["uri", "width", "height"]}}])
    
    /* 
    user {
      image : profilePicture {
        uri,
        width,
        height
       }
     }
    */