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How to Pass Object Type Argument In Query In Graphql?

6 minutes read

In GraphQL, you can pass object type arguments in a query by defining the object type as part of the query input. This can be done by creating a custom input type in the schema definition that corresponds to the structure of the object you want to pass as an argument. You can then include this input type as an argument in your query.


When writing the query, you can pass the object type argument by providing the input object with the specific fields required by the input type. These fields should match the defined structure in the schema.


For example, if you have a custom input type named UserInput with fields id and name, you can pass this object as an argument in the query like so:

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query {
  getUser(input: {
    id: "123",
    name: "John"
  }) {
    id
    name
  }
}


This way, you can easily pass object type arguments in GraphQL queries by defining custom input types in the schema and then including them as arguments in your queries.


How to structure object type argument in graphql query?

In a GraphQL query, object type arguments can be structured by providing the field names and their corresponding values within curly braces {}. For example, if you have an object type argument called "input" with fields "name" and "age", you can structure it in a query like this:

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query {
  createUser(input: {
    name: "John Doe",
    age: 30
  }) {
    id
    name
    age
  }
}


This query is requesting to create a user with the name "John Doe" and age 30. The createUser mutation takes an object type argument called "input" and the values for the fields "name" and "age" are specified within the curly braces.


How can I include object type argument in graphql query?

To include an object type argument in a GraphQL query, you need to define the object type in your schema and then use it as an argument in your query.


Here is an example of how you can include an object type argument in a GraphQL query:

  1. Define the object type in your schema:
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type User {
  id: ID!
  name: String!
  age: Int!
}

type Query {
  userById(id: ID!): User
}


  1. Use the object type argument in your query:
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query {
  userById(id: "1") {
    id
    name
    age
  }
}


In this example, we have defined a User object type in the schema and added a query called userById that takes an ID as an argument and returns a User object. In the query, we are using the userById query and passing the ID 1 as an argument to get the details of the user with ID 1.


Make sure to define the object type in your schema and use it correctly in your queries to include object type arguments in your GraphQL queries.


What is the recommended way to pass object type argument in nested queries in graphql?

In GraphQL, when passing object type arguments in nested queries, it is recommended to use input types. Input types allow you to define a specific set of fields that can be passed as arguments, making your query more structured and easier to understand.


To pass object type arguments in nested queries using input types, you would first define the input type in your schema, like this:

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input UserInput {
  id: ID!
  name: String
  email: String
}


Then, you can use this input type as an argument in your query, like this:

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query {
  getUser(input: { id: "1" }) {
    id
    name
    email
  }
}


By using input types, you can pass complex object type arguments in a structured format, making your queries more readable and maintainable.


What tools can help with passing object type argument in graphql query?

  1. GraphQL code generators: Code generators can help automatically create TypeScript interfaces or Java classes based on the GraphQL schema. This can help ensure that you are passing the correct object type in your queries.
  2. GraphQL IDEs: GraphQL IDEs such as GraphiQL or Apollo Studio provide auto-completion and type-checking features that can help with passing the correct object type in your queries.
  3. GraphQL code linters: Linters like ESLint with the eslint-plugin-graphql can help catch common mistakes and enforce best practices when writing GraphQL queries, including passing the correct object type.
  4. GraphQL schema validation tools: Tools like GraphQL Inspector or Apollo’s schema check can help validate your GraphQL schema to ensure that you are passing the correct object type in your queries.
  5. Integrated development environments (IDEs) with GraphQL support: IDEs like Visual Studio Code with GraphQL extensions can provide features like IntelliSense, syntax highlighting, and error checking to help with passing the correct object type in your queries.


How to define object type argument in graphql query?

In GraphQL, you can define an object type argument by specifying the input object type as the argument in the query.


Here is an example of defining an object type argument in a GraphQL query:

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query {
  users(filter: {name: "John", age: 30}) {
    id
    name
    age
  }
}


In this example, the users field takes an object type argument filter that contains the name and age fields as properties. You can pass values to the object type argument by specifying the field names and their corresponding values.


Make sure to define the object type in the schema definition before using it as an argument in the query.


How to pass conditional object type argument in graphql query?

In GraphQL, you can pass conditional object type arguments by specifying the type of the argument as a union type. This allows you to pass different types of objects as arguments based on a condition.


For example, let's say you have a query that accepts an argument of type UserInput, which can either be of type RegularUserInput or AdminUserInput based on a condition. You can define a union type that includes both RegularUserInput and AdminUserInput, and use it as the argument type in your query. Here's an example:

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union UserInput = RegularUserInput | AdminUserInput

input RegularUserInput {
  username: String!
  password: String!
}

input AdminUserInput {
  adminUsername: String!
  adminPassword: String!
}

type Query {
  loginUser(input: UserInput): String
}


In this example, the UserInput union type represents both types of user inputs: RegularUserInput and AdminUserInput. The loginUser query accepts an argument of type UserInput, so you can pass either RegularUserInput or AdminUserInput as the argument based on the condition.


When sending a query with a conditional object type argument, you need to specify the type of the object you're passing in the query variables. For example, you can pass a RegularUserInput object like this:

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{
  "input": {
    "username": "exampleUser",
    "password": "password123"
  }
}


Or you can pass an AdminUserInput object like this:

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{
  "input": {
    "adminUsername": "adminUser",
    "adminPassword": "adminPassword123"
  }
}


By defining a union type and using it as the argument type in your query, you can pass conditional object type arguments in GraphQL queries.

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