Generate planting guide pdf with appended filters and plant list
- Rename csv_utils to resource_generation_utils - Rename utils to wms_utils - Adds basic (no styles) pdf generation methods to resource generation - Adds pdf download endpoint
This commit is contained in:
Dana Lambert
parent
4ab327c442
commit
c63dbeae61
7 changed files with 225 additions and 149 deletions
1
backend/.gitignore
vendored
1
backend/.gitignore
vendored
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@ -5,3 +5,4 @@ __pycache__
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resources
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right_tree/api/data/fixtures/plants.json
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right_tree/staticfiles
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right_tree/api/data/generated_resources/*
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@ -1,127 +0,0 @@
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import csv
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from pathlib import Path
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import right_tree.api.data
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from .filters import *
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from .utils import get_address_from_coordinates, get_point_from_coordinates
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CSV_FILENAME = 'plants.csv'
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HEADER_FIELDS = ['Names', 'Growth Form / Max Height (m) / Spacing (m) / Forest Position', 'Moisture Preferences',
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'Tolerances (Water / Drought / Frost / Salinity)', 'Ecosystem Services', 'Carbon Sequestration Rate', 'Planting Stage']
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def get_plant_csv_filepath():
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""" Retrives the filepath for the plant csv file.
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"""
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return Path(right_tree.api.data.__file__).resolve().parent / 'resources' / CSV_FILENAME
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def get_location_filters(request):
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""" Retrives the selected location data from the request.
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"""
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filter_rows = [['LOCATION FILTERS:']]
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coordinates = request.query_params.get('coordinates')
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if coordinates is not None:
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eco_district_layer = ecological_district_coordinate_filter(coordinates).first()
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point = get_point_from_coordinates(coordinates)
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filter_rows.append(['Point coordinates:', point])
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filter_rows.append(
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['Ecological region:', eco_district_layer.ecologic_1 or ''])
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filter_rows.append(
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['Ecological district:', eco_district_layer.ecologic_2 or ''])
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filter_rows.append(
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['Property address:', get_address_from_coordinates(coordinates)['full_address'] or ''])
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else:
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filter_rows.append(["None specified"])
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return filter_rows
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def get_soil_filters(request):
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""" Retrives the selected soil type data from the request.
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"""
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filter_rows = [['SOIL FILTERS:']]
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soil_variant = request.query_params.get('soilVariant')
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coordinates = request.query_params.get('coordinates')
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if soil_variant is not None and coordinates is not None:
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soil_order_obj = soil_order_coordinate_filter(coordinates).first()
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filter_rows.append(
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['Soil Order:', f"{soil_order_obj.name or ''} ({soil_order_obj.code or ''})"])
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filter_rows.append(['Soil Variant:', soil_variant])
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else:
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filter_rows.append(["None specified"])
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return filter_rows
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def get_site_filters(request):
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""" Retrives the selected site data from the request.
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"""
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filter_rows = [['SITE FILTERS:']]
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habitat = request.query_params.get('habitat')
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zone = request.query_params.get('zone')
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if zone is not None and habitat is not None:
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habitat_json = json.loads(habitat)
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zone_json = json.loads(zone)
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filter_rows.append(['Habitat:', habitat_json.get("name", "")])
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filter_rows.append(['Zone Name:', zone_json.get("name", "")])
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filter_rows.append(['Zone Variant:', zone_json.get("variant", "")])
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filter_rows.append(
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['Zone Refined Variant:', zone_json.get("refined_variant", "")])
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else:
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filter_rows.append(["None specified"])
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return filter_rows
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def get_filter_values(request):
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""" Retrives all selected values/filters from the request.
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"""
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filter_rows = []
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# Add all the location filters
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filter_rows += get_location_filters(request)
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filter_rows.append([''])
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# Add the soil filters
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filter_rows += get_soil_filters(request)
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filter_rows.append([''])
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# Add the project site filters
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filter_rows += get_site_filters(request)
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filter_rows.append([''])
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return filter_rows
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def create_plant_csv_file(request, plant_data):
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""" Constructs a csv file that contains selected filter values and the resulting plant list.
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"""
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with open(get_plant_csv_filepath(), 'w', encoding='UTF8') as f:
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writer = csv.writer(f)
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# Write filter/selected values
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for filter_row in get_filter_values(request):
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writer.writerow(filter_row)
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# Write the plant data
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writer.writerow(HEADER_FIELDS)
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for plant in plant_data:
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plant_data_row = [
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plant.display_name,
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plant.display_growth_form,
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plant.moisture_preferences,
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plant.plant_tolerances,
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plant.ecosystem_services,
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plant.carbon_sequestration,
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plant.stage
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]
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writer.writerow(plant_data_row)
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@ -4,7 +4,7 @@ from django.http import Http404
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from django.db.models import Q
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from .models import Plant, EcologicalRegion, EcologicalDistrictLayer, SoilOrder, SoilVariant
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from .utils import get_point_from_coordinates
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from .wms_utils import get_point_from_coordinates
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def coordinate_filter(request, queryset, ignore_soil_order=False):
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191
backend/right_tree/api/resource_generation_utils.py
Normal file
191
backend/right_tree/api/resource_generation_utils.py
Normal file
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@ -0,0 +1,191 @@
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import csv
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from os import write
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from pathlib import Path
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import right_tree.api.data
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from .filters import *
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from .wms_utils import get_address_from_coordinates, get_point_from_coordinates
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import pdfkit
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import pandas as pd
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from PyPDF2 import PdfFileMerger
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CSV_FILENAME = 'plants.csv'
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PLANTING_GUIDE_PDF_FILENAME = 'planting_guide.pdf'
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HEADER_FIELDS = ['Names', 'Growth Form / Max Height (m) / Spacing (m) / Forest Position', 'Moisture Preferences',
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'Tolerances (Water / Drought / Frost / Salinity)', 'Ecosystem Services', 'Carbon Sequestration Rate', 'Planting Stage']
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def get_plant_resource_filepath(filename=CSV_FILENAME, resource_dir='generated_resources'):
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""" Retrives the filepath for the plant csv file.
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"""
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return Path(right_tree.api.data.__file__).resolve().parent / resource_dir / filename
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def get_location_filters(request):
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""" Retrives the selected location data from the request.
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"""
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filter_rows = [['LOCATION FILTERS:']]
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coordinates = request.query_params.get('coordinates')
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if coordinates is not None:
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eco_district_layer = ecological_district_coordinate_filter(
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coordinates).first()
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point = get_point_from_coordinates(coordinates)
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filter_rows.append(['Point coordinates:', point])
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filter_rows.append(['Ecological region:', eco_district_layer.ecologic_1 or ''])
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filter_rows.append(['Ecological district:', eco_district_layer.ecologic_2 or ''])
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filter_rows.append(['Property address:', get_address_from_coordinates(coordinates)['full_address'] or ''])
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else:
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filter_rows.append(["None specified"])
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return filter_rows
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def get_soil_filters(request):
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""" Retrives the selected soil type data from the request.
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"""
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filter_rows = [['SOIL FILTERS:']]
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soil_variant = request.query_params.get('soilVariant')
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coordinates = request.query_params.get('coordinates')
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if soil_variant is not None and coordinates is not None:
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soil_order_obj = soil_order_coordinate_filter(coordinates).first()
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filter_rows.append(['Soil Order:', f"{soil_order_obj.name or ''} ({soil_order_obj.code or ''})"])
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filter_rows.append(['Soil Variant:', soil_variant])
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else:
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filter_rows.append(["None specified"])
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return filter_rows
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def get_site_filters(request):
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""" Retrives the selected site data from the request.
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"""
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filter_rows = [['SITE FILTERS:']]
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habitat = request.query_params.get('habitat')
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zone = request.query_params.get('zone')
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if zone is not None and habitat is not None:
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habitat_json = json.loads(habitat)
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zone_json = json.loads(zone)
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filter_rows.append(['Habitat:', habitat_json.get("name", "")])
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filter_rows.append(['Zone Name:', zone_json.get("name", "")])
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filter_rows.append(['Zone Variant:', zone_json.get("variant", "")])
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filter_rows.append(['Zone Refined Variant:', zone_json.get("refined_variant", "")])
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else:
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filter_rows.append(["None specified"])
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return filter_rows
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def get_filter_values(request):
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""" Retrives all selected values/filters from the request.
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"""
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filter_rows = []
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# Add all the location filters
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filter_rows += get_location_filters(request)
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filter_rows.append([''])
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# Add the soil filters
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filter_rows += get_soil_filters(request)
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filter_rows.append([''])
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# Add the project site filters
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filter_rows += get_site_filters(request)
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filter_rows.append([''])
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return filter_rows
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def write_csv_filter_info(request, writer):
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""" Retrieves and writes filter information to a CSV file given a writer.
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"""
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for filter_row in get_filter_values(request):
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writer.writerow(filter_row)
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def write_csv_plant_info(plant_data, writer):
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""" Writes plant list information to a CSV file given a writer.
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"""
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writer.writerow(HEADER_FIELDS)
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for plant in plant_data:
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plant_data_row = [
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plant.display_name,
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plant.display_growth_form,
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plant.moisture_preferences,
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plant.plant_tolerances,
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plant.ecosystem_services,
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plant.carbon_sequestration,
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plant.stage
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]
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writer.writerow(plant_data_row)
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def create_plant_csv_file(request, plant_data):
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""" Constructs a csv file that contains selected filter values and the resulting plant list.
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"""
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with open(get_plant_resource_filepath(), 'w', encoding='UTF8') as f:
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writer = csv.writer(f)
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# Write filter/selected values
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write_csv_filter_info(request, writer)
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# Write the plant data
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write_csv_plant_info(plant_data, writer)
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def generate_pdf(data_name, data, csv_generation_function):
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""" Generates a pdf from a csv given data and a csv generation method.
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Requires an html file to be generated as an intermediate step.
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"""
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# Define filepaths - some are required as intermediate files
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csv_filepath = get_plant_resource_filepath(f'{data_name}.csv')
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html_filepath = get_plant_resource_filepath(f'{data_name}.html')
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pdf_filepath = get_plant_resource_filepath(f'{data_name}.pdf')
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# Create an initial csv file with the data
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with open(csv_filepath, 'w', encoding='UTF8') as f:
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writer = csv.writer(f)
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csv_generation_function(data, writer)
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# Convert the csv to and html file then to a pdf
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CSV = pd.read_csv(csv_filepath)
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CSV.to_html(html_filepath)
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pdfkit.from_file(str(html_filepath), str(pdf_filepath))
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def create_planting_guide_pdf(request, plant_data):
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""" Creates a planting guide pdf document with a pre-generated planting guide with
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filter and plant list tabular informtation appended.
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"""
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# Define the names of the resource files as used in multiple places
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filter_file_prefix = "filters"
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plant_list_file_prefix = "plant_list"
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# Generate the filters and plant list pdf files
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generate_pdf(filter_file_prefix, request, write_csv_filter_info) # TODO: space values appear as NaN... this should be fixed
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generate_pdf(plant_list_file_prefix, plant_data, write_csv_plant_info)
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# Create a list of pdfs that need to be merged
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planting_guide_pdf_filepath = get_plant_resource_filepath(PLANTING_GUIDE_PDF_FILENAME, 'resources')
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filter_pdf_filepath = get_plant_resource_filepath(f'{filter_file_prefix}.pdf')
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plant_list_pdf_filepath = get_plant_resource_filepath(f'{plant_list_file_prefix}.pdf')
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pdfs = [planting_guide_pdf_filepath, filter_pdf_filepath, plant_list_pdf_filepath]
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# Merge pdfs
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merger = PdfFileMerger()
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for pdf in pdfs:
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merger.append(str(pdf))
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# Create the final output pdf with all merged documents
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output_pdf_filepath = get_plant_resource_filepath(PLANTING_GUIDE_PDF_FILENAME)
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merger.write(str(output_pdf_filepath))
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merger.close()
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@ -1,20 +1,19 @@
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from django.http import HttpResponseBadRequest, HttpResponse, HttpRequest
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from django.http import HttpResponseBadRequest, HttpResponse, FileResponse
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from django.shortcuts import get_object_or_404
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from rest_framework import viewsets
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from rest_framework.response import Response
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from wsgiref.util import FileWrapper
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from right_tree.api.models import Habitat, HabitatImage, Plant, EcologicalDistrictLayer, SoilOrder
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from right_tree.api.serializers import HabitatImageSerializer, HabitatSerializer, PlantSerializer, SoilOrderSerializer, EcologicalDistrictLayerSerializer, AddressSerializer
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from .filters import *
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from .utils import get_address_from_coordinates
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from .csv_utils import create_plant_csv_file, get_plant_csv_filepath
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from .wms_utils import get_address_from_coordinates
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from .resource_generation_utils import create_plant_csv_file, get_plant_resource_filepath, create_planting_guide_pdf, PLANTING_GUIDE_PDF_FILENAME
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class PlantViewSet(viewsets.ModelViewSet):
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"""
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Filtered viewset for plants.
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""" Filtered viewset for plants.
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"""
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queryset = Plant.objects.all()
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serializer_class = PlantSerializer
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@ -27,8 +26,7 @@ class PlantViewSet(viewsets.ModelViewSet):
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class SoilOrderViewSet(viewsets.ModelViewSet):
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"""
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Filtered viewset for soil details.
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""" Filtered viewset for soil details.
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"""
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serializer_class = SoilOrderSerializer
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@ -43,8 +41,7 @@ class SoilOrderViewSet(viewsets.ModelViewSet):
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class EcologicalDistrictViewSet(viewsets.ModelViewSet):
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"""
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Filtered viewset for ecological district/region details.
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""" Filtered viewset for ecological district/region details.
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"""
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serializer_class = EcologicalDistrictLayerSerializer
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@ -59,8 +56,7 @@ class EcologicalDistrictViewSet(viewsets.ModelViewSet):
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class LINZPropertyViewSet(viewsets.ViewSet):
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"""
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Filtered viewset for ecological district/region details.
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""" Filtered viewset for ecological district/region details.
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"""
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def list(self, request):
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@ -74,16 +70,14 @@ class LINZPropertyViewSet(viewsets.ViewSet):
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class HabitatViewSet(viewsets.ModelViewSet):
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"""
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Viewset for all habitats.
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""" Viewset for all habitats.
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"""
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serializer_class = HabitatSerializer
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queryset = Habitat.objects.all()
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class HabitatImageViewSet(viewsets.ViewSet):
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"""
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Viewset for a habitat image.
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""" Viewset for a habitat image.
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"""
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def list(self, request):
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@ -99,12 +93,27 @@ class HabitatImageViewSet(viewsets.ViewSet):
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class CSVDownloadView(viewsets.ViewSet):
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""" Viewset for a downloading a CSV plant list and filters.
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"""
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def list(self, request, *args, **kwargs):
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filtered_plants = get_filtered_plants(request)
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create_plant_csv_file(request, filtered_plants)
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csv_file = open(get_plant_csv_filepath(), 'rb')
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csv_file = open(get_plant_resource_filepath(), 'rb')
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response = HttpResponse(csv_file, content_type='text/csv')
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response['Content-Disposition'] = 'attachment; filename="plants.csv"'
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return response
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class PDFDownloadView(viewsets.ViewSet):
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""" Viewset for a downloading a PDF planting guide with appended filter and plant list info.
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"""
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def list(self, request, *args, **kwargs):
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filtered_plants = get_filtered_plants(request)
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create_planting_guide_pdf(request, filtered_plants)
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pdf_file = open(get_plant_resource_filepath(PLANTING_GUIDE_PDF_FILENAME), 'rb')
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response = HttpResponse(FileWrapper(pdf_file), content_type='application/pdf')
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return response
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@ -25,8 +25,10 @@ router.register(r'soil', views.SoilOrderViewSet, basename='soil')
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router.register(r'ecologicaldistrict', views.EcologicalDistrictViewSet, basename='ecologicaldistrict')
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router.register(r'address', views.LINZPropertyViewSet, basename='address')
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router.register(r'habitats', views.HabitatViewSet, basename='habitats')
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router.register(r'habitatimage', views.HabitatImageViewSet,basename='habitatimage')
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router.register(r'download/csv', views.CSVDownloadView ,basename='downloadcsv')
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router.register(r'habitatimage', views.HabitatImageViewSet, basename='habitatimage')
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router.register(r'download/csv', views.CSVDownloadView, basename='downloadcsv')
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router.register(r'download/pdf', views.PDFDownloadView, basename='downloadpdf')
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urlpatterns = [
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path('admin/', admin.site.urls),
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Reference in a new issue