gql-query-builder
This is a GraphQL query builder.
Use with method chain.
Install
pip install gql-query-builder
Usage
- query
from gql_query_builder import GqlQuery
query = GqlQuery().fields(['name']).query('hero').operation().generate()
print(query)
"""
query {
hero {
name
}
}
"""- mutation
from gql_query_builder import GqlQuery
query = GqlQuery().fields(['stars', 'commentary']).query('createReview', input={"episode": "$ep", "review": "$review"}).operation('mutation', name='CreateReviewForEpisode', input={"$ep": "Episode!", "$review": "ReviewInput!"}).generate()
print(query)
"""
mutation CreateReviewForEpisode($ep: Episode!, $review: ReviewInput!) {
createReview(episode: $ep, review: $review) {
stars
commentary
}
}
"""Methods
-
fields()
build response fields.
#Syntax
fields(
fields: List[str] = [],
name: str = '',
condition_expression: str = ''
)-
query()
build query fields.
#Syntax
query(
name: str = '',
alias: str = '',
input: Dict[str, Union[str, int]] = {}
)-
operation()
build operation fields.
#Syntax
operation(
query_type: str = 'query',
name: str = '',
input: Dict[str, Union[str, int]] = {},
queries: List[str] = []
)-
fragment()
build fragment fields.
#Syntax
fragment(
name: str,
interface: str
)-
generate()
generate query.
#Syntax
generate()Examples
- Nesting fields
from gql_query_builder import GqlQuery
field_friends = GqlQuery().fields(['name'], name='friends').generate()
query = GqlQuery().fields(['name', field_friends]).query('hero').operation('query').generate()
print(query)
"""
query {
hero {
name
friends {
name
}
}
}
"""- Query with input
from gql_query_builder import GqlQuery
query = GqlQuery().fields(['name', 'height']).query('human', input={"id": '"1000"'}).operation().generate()
print(query)
"""
query {
human(id: "1000") {
name
height
}
}
"""- Query with nested input
from gql_query_builder import GqlQuery
GqlQuery().fields(['name', 'height']).query('human', input={"input": {"data": {"id": "1000", "name": "test"}}}).operation().generate()
"""
query{
human(input: {data: {id: "1000", name: "test"}}){
human{
name,
height
}
}
}
"""- Query with input and arguments
from gql_query_builder import GqlQuery
query = GqlQuery().fields(['name', 'height(unit: FOOT)']).query('human', input={"id": '"1000"'}).operation().generate()
print(query)
"""
query {
human(id: "1000") {
name
height(unit: FOOT)
}
}
"""- Alias
from gql_query_builder import GqlQuery
query_empirehero = GqlQuery().fields(['name']).query('hero', alias='empireHero', input={"episode": 'EMPIRE'}).generate()
query_jedihero = GqlQuery().fields(['name']).query('hero', alias='jediHero', input={"episode": 'JEDI'}).generate()
query = GqlQuery().operation('query', queries=[query_empirehero, query_jedihero]).generate()
print(query)
"""
query {
empireHero: hero(episode: EMPIRE) {
name
}
jediHero: hero(episode: JEDI) {
name
}
}
"""- Fragments
from gql_query_builder import GqlQuery
field_friends = GqlQuery().fields(['name'], name='friends').generate()
query = GqlQuery().fields(['name', 'appearsIn', field_friends]).fragment('comparisonFields', 'Character').generate()
print(query)
"""
fragment comparisonFields on Character {
name
appearsIn
friends {
name
}
}
"""- Refer to fragments
from gql_query_builder import GqlQuery
query_leftComparison = GqlQuery().fields(['...comparisonFields']).query('hero', alias='leftComparison', input={"episode": "EMPIRE"}).generate()
query_rightComparison = GqlQuery().fields(['...comparisonFields']).query('hero', alias='rightComparison', input={"episode": "JEDI"}).generate()
query = GqlQuery().operation('query', queries=[query_leftComparison, query_rightComparison]).generate()
print(query)
"""
query {
leftComparison: hero(episode: EMPIRE) {
...comparisonFields
}
rightComparison: hero(episode: JEDI) {
...comparisonFields
}
}
"""- Query with variables
from gql_query_builder import GqlQuery
field_friends = GqlQuery().fields(['name'], name='friends').generate()
query = GqlQuery().fields(['name', field_friends]).query('hero', input={"episode": "$episode"}).operation('query', name='HeroNameAndFriends', input={"$episode": "Episode"}).generate()
print(query)
"""
query HeroNameAndFriends($episode: Episode) {
hero(episode: $episode) {
name
friends {
name
}
}
}
"""- Directives
from gql_query_builder import GqlQuery
field_friends = GqlQuery().fields(['name'], name='friends @include(if: $withFriends)').generate()
query = GqlQuery().fields(['name', field_friends]).query('hero', input={"episode": "$episode"}).operation('query', name='Hero', input={"$episode": "Episode", "$withFriends": "Boolean!"}).generate()
print(query)
"""
query Hero($episode: Episode, $withFriends: Boolean!) {
hero(episode: $episode) {
name
friends @include(if: $withFriends) {
name
}
}
}
"""
