AttributeError: 'ImageCard' object has no attribute 'source' - python-3.x

Question

Good afternoon people.
I'm building an app that takes information from Firebase, all working beautifully!
The application grew and became too complex to be in a single file, so I'm separating it to make it more readable.
In my code below I take data from Firebase and show it in a list.
I happen to have two pieces of information, a FitImage with source and an MDLabel with text.
After I separated the code I'm getting the return below:
AttributeError: 'ImageCard' object has no attribute 'source'
1 - If I manually inform the image path, it works.
2 - Interestingly the text coming from Firebase works.
I'd appreciate your help trying to figure out why the text works and the image doesn't!
from kivymd.uix.dialog import MDDialog
from kivymd.uix.button import MDFlatButton
from kivy.properties import ListProperty
from kivy.properties import StringProperty
from kivy.uix.screenmanager import Screen
from kivymd.uix.card import MDCard
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
# Imports para trabalhar com Firebase
from config import config
import pyrebase
Builder.load_string("""
<ImageCard#MDCard>
id: ec
size_hint: ('180dp', None)
ripple_behavior: True
image:''
text:''
orientation:'vertical'
FitImage:
pos_hint: {'center_x': .5, 'center_y': .25}
source: './images/user.png' # root.source
size_hint: None, None
width: dp(150)
height: dp(150)
#radius: [99, 99, 99, 99]
MDBoxLayout:
orientation:'horizontal'
MDLabel:
text:root.text
halign:"center"
#bold: True
MDFlatButton:
text: "New Screen Here"
increment_width: "164dp"
on_release: root.show_confirmation_dialog()
<ScreenRecycleView>:
name: 'recycle_view'
FloatLayout:
MDTextField:
id: pesquisa
helper_text: "Escreva um trecho da pesquisa e clique em pesquisar."
helper_text_mode: "on_focus"
size_hint: .99, None
halign: 'center'
multiline: False
hint_text: 'Digite o que procura'
text_validate_unfocus: False
pos_hint: {'center_x': 0.42, 'center_y': 0.84}
padding: dp(15)
#size_hint_x: .75
#on_text: root.on_kv_post(self, self.text)
MDIconButton:
icon: "magnify"
pos_hint: {"center_x": .95, "center_y": 0.84}
on_release: root.on_kv_post(self, pesquisa.text)
#:import get_color_from_hex kivy.utils.get_color_from_hex
MDBoxLayout:
pos_hint: {'center_x': 0.5, 'center_y': 0.3}
RecycleView:
data: root.image_data
viewclass: "ImageCard"
RecycleGridLayout:
cols: 2
default_size: dp(155), dp(200)
padding: dp(5) # Determina o espaçamento entre um widget e outro pelos lados
spacing: dp(5) # Determina o espaçamento entre um widget e outro de cima para baixo
default_size_hint: 1, None ##### Define a largura do widget sempre próximo as bordas
size_hint_y: None ##### Associado a default_size_hint
height: self.minimum_height
#ripple_behavior: True""")
class Content(BoxLayout):
pass
class ImageCard(MDCard):
dialog = None
text = StringProperty()
source = StringProperty()
def show_confirmation_dialog(self):
if not self.dialog:
self.dialog = MDDialog(
#title="Address:",
type="custom",
content_cls=Content(),
buttons=[
MDFlatButton(
text="CANCEL",
theme_text_color="Custom",
text_color=self.theme_cls.primary_color,
),
MDFlatButton(
text="OK",
theme_text_color="Custom",
text_color=self.theme_cls.primary_color,
),
],
)
self.dialog.open()
class ScreenRecycleView(Screen):
image_data = ListProperty()
def on_kv_post(self, base_widget, text="", search=False):
# Inicializando o banco de dados.
self.firebase = pyrebase.initialize_app(config)
self.db = self.firebase.database()
self.produtos = self.db.child("Produtos").get(token='**************************************')
#self.ids.rv3.data = []
self.image_data = []
for produto in self.produtos.each():
if text.upper() in produto.val()['nmproduto']:
if produto.val()['url'] != 'SemUrl':
self.image_data.append(
{"source": produto.val()['url'],
"text": produto.val()['nmproduto']
}
)
else:
self.image_data.append(
{"source": './images/sem_imagem.png',
"text": produto.val()['nmproduto']
}
)
#print(json.dumps(self.ids.rv3.data, indent=4))

Answer 1

I thought!
On ImageCard#MDCard it was like this:
image:'' <<<======
text:''
I modified it to:
source:''
text:''
and solved. Interestingly it worked when the code was mixed up.