mpeltriaux
7e68d12ee9
* splits konova/views.py into separate files in new module
* view files can now be found in /konova/views/...
* introduces first class based view AbstractLogView
* implemented for Ema, Intervention, Compensation and EcoAccount
109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
"""
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Author: Michel Peltriaux
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Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
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Contact: ksp-servicestelle@sgdnord.rlp.de
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Created on: 19.08.22
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"""
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from django.http import HttpResponse, HttpRequest
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from django.shortcuts import get_object_or_404
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from django.template.loader import render_to_string
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from konova.models import Geometry, Municipal
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def get_geom_parcels(request: HttpRequest, id: str):
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""" Getter for HTMX
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Returns all parcels of the requested geometry rendered into a simple HTML table
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Args:
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request (HttpRequest): The incoming request
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id (str): The geometry's id
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Returns:
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A rendered piece of HTML
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"""
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# HTTP code 286 states that the HTMX should stop polling for updates
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# https://htmx.org/docs/#polling
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status_code = 286
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template = "konova/includes/parcels/parcel_table_frame.html"
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geom = get_object_or_404(Geometry, id=id)
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parcels = geom.get_underlying_parcels()
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geos_geom = geom.geom
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parcels_are_currently_calculated = geos_geom is not None and geos_geom.area > 0 and len(parcels) == 0
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parcels_available = len(parcels) > 0
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no_geometry_given = geos_geom is None
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if parcels_are_currently_calculated:
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# Parcels are being calculated right now. Change the status code, so polling stays active for fetching
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# resutls after the calculation
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status_code = 200
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if parcels_available or no_geometry_given:
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parcels = parcels.order_by("-municipal", "flr", "flrstck_zhlr", "flrstck_nnr")
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municipals = parcels.order_by("municipal").distinct("municipal").values("municipal__id")
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municipals = Municipal.objects.filter(id__in=municipals)
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rpp = 100
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num_all_parcels = parcels.count()
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parcels = parcels[:rpp]
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next_page = 1
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if len(parcels) < rpp:
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next_page = None
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context = {
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"num_parcels": num_all_parcels,
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"parcels": parcels,
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"municipals": municipals,
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"geom_id": str(id),
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"next_page": next_page,
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}
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html = render_to_string(template, context, request)
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return HttpResponse(html, status=status_code)
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else:
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return HttpResponse(None, status=404)
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def get_geom_parcels_content(request: HttpRequest, id: str, page: int):
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""" Getter for infinite scroll of HTMX
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Returns parcels of a specific page/slice of the found parcel set.
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Implementation of infinite scroll htmx example: https://htmx.org/examples/infinite-scroll/
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Args:
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request (HttpRequest): The incoming request
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id (str): The geometry's id
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page (int): The requested page number
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Returns:
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A rendered piece of HTML
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"""
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if page < 0:
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raise AssertionError("Parcel page can not be negative")
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# HTTP code 286 states that the HTMX should stop polling for updates
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# https://htmx.org/docs/#polling
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status_code = 286
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template = "konova/includes/parcels/parcel_table_content.html"
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geom = get_object_or_404(Geometry, id=id)
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parcels = geom.get_underlying_parcels()
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parcels = parcels.order_by("-municipal", "flr", "flrstck_zhlr", "flrstck_nnr")
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rpp = 100
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from_p = rpp * (page-1)
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to_p = rpp * (page)
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next_page = page + 1
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parcels = parcels[from_p:to_p]
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if len(parcels) < rpp:
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next_page = None
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context = {
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"parcels": parcels,
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"geom_id": str(id),
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"next_page": next_page,
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}
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html = render_to_string(template, context, request)
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return HttpResponse(html, status=status_code)
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