mab-graphql-query-assembler

a simple but powerful graphQL query builder

Install

npm install mab-graphql-query-assembler

Api

const Query = require('mab-graphql-query-assembler');

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('mab-graphql-query-assembler');
 
// 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
       }
     }
    */