EMA views
* splits ema/views.py (+700 lines) into separate files in new module
* view files can now be found in /ema/views/...
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ema/views/ema.py
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237
ema/views/ema.py
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"""
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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.contrib import messages
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from django.contrib.auth.decorators import login_required
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from django.db.models import Sum
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from django.http import HttpRequest, JsonResponse
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from django.shortcuts import get_object_or_404, redirect, render
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from django.urls import reverse
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from django.utils.translation import gettext_lazy as _
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from ema.forms import NewEmaForm, EditEmaForm
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from ema.models import Ema
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from ema.tables import EmaTable
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from konova.contexts import BaseContext
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from konova.decorators import shared_access_required, conservation_office_group_required
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from konova.forms import SimpleGeomForm
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from konova.forms.modals import RemoveModalForm
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from konova.settings import DEFAULT_GROUP, ZB_GROUP, ETS_GROUP
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from konova.sub_settings.context_settings import TAB_TITLE_IDENTIFIER
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from konova.utils.message_templates import RECORDED_BLOCKS_EDIT, IDENTIFIER_REPLACED, FORM_INVALID
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from konova.utils.user_checks import in_group
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@login_required
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def index_view(request: HttpRequest):
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""" Renders the index view for EMAs
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Args:
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request (HttpRequest): The incoming request
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Returns:
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"""
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template = "generic_index.html"
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emas = Ema.objects.filter(
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deleted=None,
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).order_by(
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"-modified"
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)
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table = EmaTable(
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request,
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queryset=emas
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)
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context = {
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"table": table,
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TAB_TITLE_IDENTIFIER: _("EMAs - Overview"),
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}
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context = BaseContext(request, context).context
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return render(request, template, context)
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@login_required
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@conservation_office_group_required
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def new_view(request: HttpRequest):
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"""
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Renders a view for a new eco account creation
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Args:
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request (HttpRequest): The incoming request
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Returns:
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"""
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template = "ema/form/view.html"
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data_form = NewEmaForm(request.POST or None)
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geom_form = SimpleGeomForm(request.POST or None, read_only=False)
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if request.method == "POST":
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if data_form.is_valid() and geom_form.is_valid():
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generated_identifier = data_form.cleaned_data.get("identifier", None)
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ema = data_form.save(request.user, geom_form)
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if generated_identifier != ema.identifier:
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messages.info(
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request,
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IDENTIFIER_REPLACED.format(
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generated_identifier,
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ema.identifier
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)
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)
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messages.success(request, _("EMA {} added").format(ema.identifier))
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return redirect("ema:detail", id=ema.id)
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else:
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messages.error(request, FORM_INVALID, extra_tags="danger",)
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else:
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# For clarification: nothing in this case
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pass
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context = {
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"form": data_form,
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"geom_form": geom_form,
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TAB_TITLE_IDENTIFIER: _("New EMA"),
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}
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context = BaseContext(request, context).context
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return render(request, template, context)
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@login_required
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@conservation_office_group_required
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def new_id_view(request: HttpRequest):
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""" JSON endpoint
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Provides fetching of free identifiers for e.g. AJAX calls
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"""
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tmp = Ema()
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identifier = tmp.generate_new_identifier()
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while Ema.objects.filter(identifier=identifier).exists():
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identifier = tmp.generate_new_identifier()
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return JsonResponse(
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data={
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"gen_data": identifier
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}
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)
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@login_required
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def detail_view(request: HttpRequest, id: str):
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""" Renders the detail view of an EMA
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Args:
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request (HttpRequest): The incoming request
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id (str): The EMA id
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Returns:
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"""
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template = "ema/detail/view.html"
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ema = get_object_or_404(Ema, id=id, deleted=None)
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geom_form = SimpleGeomForm(instance=ema)
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parcels = ema.get_underlying_parcels()
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_user = request.user
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is_data_shared = ema.is_shared_with(_user)
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# Order states according to surface
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before_states = ema.before_states.all().order_by("-surface")
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after_states = ema.after_states.all().order_by("-surface")
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# Precalculate logical errors between before- and after-states
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# Sum() returns None in case of no states, so we catch that and replace it with 0 for easier handling
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sum_before_states = before_states.aggregate(Sum("surface"))["surface__sum"] or 0
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sum_after_states = after_states.aggregate(Sum("surface"))["surface__sum"] or 0
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diff_states = abs(sum_before_states - sum_after_states)
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ema.set_status_messages(request)
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context = {
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"obj": ema,
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"geom_form": geom_form,
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"parcels": parcels,
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"has_access": is_data_shared,
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"before_states": before_states,
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"after_states": after_states,
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"sum_before_states": sum_before_states,
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"sum_after_states": sum_after_states,
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"diff_states": diff_states,
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"is_default_member": in_group(_user, DEFAULT_GROUP),
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"is_zb_member": in_group(_user, ZB_GROUP),
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"is_ets_member": in_group(_user, ETS_GROUP),
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"LANIS_LINK": ema.get_LANIS_link(),
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TAB_TITLE_IDENTIFIER: f"{ema.identifier} - {ema.title}",
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"has_finished_deadlines": ema.get_finished_deadlines().exists(),
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}
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context = BaseContext(request, context).context
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return render(request, template, context)
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@login_required
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@conservation_office_group_required
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@shared_access_required(Ema, "id")
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def edit_view(request: HttpRequest, id: str):
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"""
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Renders a view for editing compensations
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Args:
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request (HttpRequest): The incoming request
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Returns:
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"""
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template = "compensation/form/view.html"
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# Get object from db
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ema = get_object_or_404(Ema, id=id)
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if ema.is_recorded:
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messages.info(
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request,
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RECORDED_BLOCKS_EDIT
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)
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return redirect("ema:detail", id=id)
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# Create forms, initialize with values from db/from POST request
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data_form = EditEmaForm(request.POST or None, instance=ema)
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geom_form = SimpleGeomForm(request.POST or None, read_only=False, instance=ema)
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if request.method == "POST":
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if data_form.is_valid() and geom_form.is_valid():
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# The data form takes the geom form for processing, as well as the performing user
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ema = data_form.save(request.user, geom_form)
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messages.success(request, _("EMA {} edited").format(ema.identifier))
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return redirect("ema:detail", id=ema.id)
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else:
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messages.error(request, FORM_INVALID, extra_tags="danger",)
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else:
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# For clarification: nothing in this case
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pass
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context = {
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"form": data_form,
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"geom_form": geom_form,
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TAB_TITLE_IDENTIFIER: _("Edit {}").format(ema.identifier),
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}
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context = BaseContext(request, context).context
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return render(request, template, context)
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@login_required
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@conservation_office_group_required
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@shared_access_required(Ema, "id")
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def remove_view(request: HttpRequest, id: str):
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""" Renders a modal view for removing the EMA
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Args:
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request (HttpRequest): The incoming request
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id (str): The EMA's id
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Returns:
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"""
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ema = get_object_or_404(Ema, id=id)
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form = RemoveModalForm(request.POST or None, instance=ema, request=request)
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return form.process_request(
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request=request,
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msg_success=_("EMA removed"),
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redirect_url=reverse("ema:index"),
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)
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