fastapi-admin/fastapi_admin/resources.py at dev · zinating/fastapi-admin · GitHub

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from typing import Any, Dict, List, Optional, Tuple, Type, Union

from pydantic import BaseModel, validator

from starlette.datastructures import FormData

from starlette.requests import Request

from tortoise import ForeignKeyFieldInstance, ManyToManyFieldInstance

from tortoise import Model as TortoiseModel

from tortoise.fields import BooleanField, DateField, DatetimeField, JSONField

from tortoise.fields.data import CharEnumFieldInstance, IntEnumFieldInstance, IntField, TextField

from tortoise.queryset import QuerySet

from fastapi_admin.enums import Method

from fastapi_admin.exceptions import NoSuchFieldFound

from fastapi_admin.i18n import _

from fastapi_admin.widgets import Widget, displays, inputs

from fastapi_admin.widgets.filters import Filter, Search

class Resource:

"""

Base Resource

"""

label: str

icon: str = ""

class Link(Resource):

url: str

target: str = "_self"

class Field:

label: str

display: displays.Display

input: inputs.Input

def __init__(

self,

label: Optional[str] = None,

display: Optional[displays.Display] = None,

input_: Optional[Widget] = None,

self.name = name

self.label = label or name.title()

if not display:

display = displays.Display()

display.context.update(label=self.label)

self.display = display

if not input_:

input_ = inputs.Input()

input_.context.update(label=self.label, name=name)

self.input = input_

class ComputeField(Field):

async def get_value(self, request: Request, obj: dict):

return obj.get(self.name)

class Action(BaseModel):

icon: str

label: str

method: Method = Method.POST

ajax: bool = True

@validator("ajax")

def ajax_validate(cls, v: bool, values: dict, **kwargs):

if not v and values["method"] != Method.GET:

raise ValueError("ajax is False only available when method is Method.GET")

class ToolbarAction(Action):

class_: Optional[str]

class Model(Resource):

model: Type[TortoiseModel]

fields: List[Union[str, Field, ComputeField]] = []

page_size: int = 10

page_pre_title: Optional[str] = None

page_title: Optional[str] = None

filters: List[Union[str, Filter]] = []

async def get_toolbar_actions(self, request: Request) -> List[ToolbarAction]:

return [

ToolbarAction(

label=_("create"),

icon="fas fa-plus",

name="create",

method=Method.GET,

ajax=False,

class_="btn-dark",

)

]

async def row_attributes(self, request: Request, obj: dict) -> dict:

return {}

async def column_attributes(self, request: Request, field: Field) -> dict:

return {}

async def cell_attributes(self, request: Request, obj: dict, field: Field) -> dict:

return {}

async def get_actions(self, request: Request) -> List[Action]:

return [

Action(

label=_("update"), icon="ti ti-edit", name="update", method=Method.GET, ajax=False

Action(label=_("delete"), icon="ti ti-trash", name="delete", method=Method.DELETE),

]

async def get_bulk_actions(self, request: Request) -> List[Action]:

return [

Action(

label=_("delete_selected"),

icon="ti ti-trash",

name="delete",

method=Method.DELETE,

]

@classmethod

async def get_inputs(cls, request: Request, obj: Optional[TortoiseModel] = None):

ret = []

for field in cls.get_fields(is_display=False):

input_ = field.input

if isinstance(input_, inputs.DisplayOnly):

continue

if isinstance(input_, inputs.File):

cls.enctype = "multipart/form-data"

name = input_.context.get("name")

ret.append(await input_.render(request, getattr(obj, name, None)))

return ret

@classmethod

async def resolve_query_params(cls, request: Request, values: dict, qs: QuerySet):

ret = {}

for f in cls.filters:

if isinstance(f, str):

f = Search(name=f, label=f.title())

name = f.context.get("name")

v = values.get(name)

if v is not None and v != "":

ret[name] = await f.parse_value(request, v)

qs = await f.get_queryset(request, v, qs)

return ret, qs

@classmethod

async def resolve_data(cls, request: Request, data: FormData):

ret = {}

m2m_ret = {}

for field in cls.get_fields(is_display=False):

input_ = field.input

if input_.context.get("disabled") or isinstance(input_, inputs.DisplayOnly):

continue

name = input_.context.get("name")

if isinstance(input_, inputs.ManyToMany):

v = data.getlist(name)

value = await input_.parse_value(request, v)

m2m_ret[name] = await input_.model.filter(pk__in=value)

else:

v = data.get(name)

value = await input_.parse_value(request, v)

if value is None:

continue

ret[name] = value

return ret, m2m_ret

@classmethod

async def get_filters(cls, request: Request, values: Optional[dict] = None):

if not values:

values = {}

ret = []

for f in cls.filters:

if isinstance(f, str):

f = Search(name=f, label=f.title())

name = f.context.get("name")

value = values.get(name)

ret.append(await f.render(request, value))

return ret

@classmethod

def _get_fields_attr(cls, attr: str, display: bool = True):

ret = []

for field in cls.get_fields():

if display and isinstance(field.display, displays.InputOnly):

continue

ret.append(getattr(field, attr))

return ret or cls.model._meta.db_fields

@classmethod

def get_fields_name(cls, display: bool = True):

return cls._get_fields_attr("name", display)

@classmethod

def _get_display_input_field(cls, field_name: str) -> Field:

fields_map = cls.model._meta.fields_map

field = fields_map.get(field_name)

if not field:

raise NoSuchFieldFound(f"Can't found field '{field_name}' in model {cls.model}")

label = field_name

null = field.null

placeholder = field.description or ""

display, input_ = displays.Display(), inputs.Input(

placeholder=placeholder, null=null, default=field.default

)

if field.pk or field.generated:

display, input_ = displays.Display(), inputs.DisplayOnly()

elif isinstance(field, BooleanField):

display, input_ = displays.Boolean(), inputs.Switch(null=null, default=field.default)

elif isinstance(field, DatetimeField):

if field.auto_now or field.auto_now_add:

input_ = inputs.DisplayOnly()

else:

input_ = inputs.DateTime(null=null, default=field.default)

display, input_ = displays.DatetimeDisplay(), input_

elif isinstance(field, DateField):

display, input_ = displays.DateDisplay(), inputs.Date(null=null, default=field.default)

elif isinstance(field, IntEnumFieldInstance):

display, input_ = displays.Display(), inputs.Enum(

field.enum_type, null=null, default=field.default

)

elif isinstance(field, CharEnumFieldInstance):

display, input_ = displays.Display(), inputs.Enum(

field.enum_type, enum_type=str, null=null, default=field.default

)

elif isinstance(field, JSONField):

display, input_ = displays.Json(), inputs.Json(null=null)

elif isinstance(field, TextField):

display, input_ = displays.Display(), inputs.TextArea(

placeholder=placeholder, null=null, default=field.default

)

elif isinstance(field, IntField):

display, input_ = displays.Display(), inputs.Number(

placeholder=placeholder, null=null, default=field.default

)

elif isinstance(field, ForeignKeyFieldInstance):

display, input_ = displays.Display(), inputs.ForeignKey(

field.related_model, null=null, default=field.default

)

field_name = field.source_field

elif isinstance(field, ManyToManyFieldInstance):

display, input_ = displays.InputOnly(), inputs.ManyToMany(field.related_model)

return Field(name=field_name, label=label.title(), display=display, input_=input_)

@classmethod

def get_fields(cls, is_display: bool = True):

ret = []

pk_column = cls.model._meta.db_pk_column

for field in cls.fields or cls.model._meta.fields:

if isinstance(field, str):

if field == pk_column:

continue

field = cls._get_display_input_field(field)

if isinstance(field, ComputeField) and not is_display:

continue

elif isinstance(field, Field):

if field.name == pk_column:

continue

if (is_display and isinstance(field.display, displays.InputOnly)) or (

not is_display and isinstance(field.input, inputs.DisplayOnly)

continue

if (

field.name in cls.model._meta.fetch_fields

and field.name not in cls.model._meta.fk_fields | cls.model._meta.m2m_fields

continue

ret.append(field)

ret.insert(0, cls._get_display_input_field(pk_column))

return ret

@classmethod

def get_fields_label(cls, display: bool = True):

return cls._get_fields_attr("label", display)

@classmethod

def get_m2m_field(cls):

ret = []

for field in cls.fields or cls.model._meta.fields:

if isinstance(field, Field):

field = field.name

if field in cls.model._meta.m2m_fields:

ret.append(field)

return ret

class Dropdown(Resource):

resources: List[Type[Resource]]

async def render_values(

request: Request,

model: "Model",

fields: List["Field"],

values: List[Dict[str, Any]],

display: bool = True,

) -> Tuple[List[List[Any]], List[dict], List[dict], List[List[dict]]]:

"""

render values with template render

:params model:

:params request:

:params fields:

:params values:

:params display:

:params request:

:params model:

:return:

"""

ret = []

cell_attributes: List[List[dict]] = []

row_attributes: List[dict] = []

column_attributes: List[dict] = []

for field in fields:

column_attributes.append(await model.column_attributes(request, field))

for value in values:

row_attributes.append(await model.row_attributes(request, value))

item = []

cell_item = []

for field in fields:

if isinstance(field, ComputeField):

v = await field.get_value(request, value)

else:

v = value.get(field.name)

cell_item.append(await model.cell_attributes(request, value, field))

if display:

item.append(await field.display.render(request, v))

else:

item.append(await field.input.render(request, v))

ret.append(item)

cell_attributes.append(cell_item)

return ret, row_attributes, column_attributes, cell_attributes

fastapi-admin/fastapi_admin/resources.py at dev · zinating/fastapi-admin · GitHub

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