def index(request):
"""
index(request)
Site Front Page.
Presents introductory text and a map of NCA regions. A form
allows selection of a region. On submit, user is redirected
to the rgn_smry view at the selected region.
"""
# smrylogger.debug("INDEX VIEW")
# Initialize a session.
site_attr.init_session(request)
attr_dct = site_attr.set_attrs(request, "modis_lnd_cvr")
smrylogger.debug("index( )|attr_dct: %s", attr_dct)
# Region selection form.
if request.method == "POST":
rgn_form = RegionForm(request.POST)
if rgn_form.is_valid():
# Update attributes.
for key in rgn_form.cleaned_data.keys():
attr_dct[key] = rgn_form.cleaned_data[key]
# smrylogger.debug("index( )|attr_dct: %s", attr_dct)
# Set session attributes to dictionary items.
site_attr.set_session_attr(request, attr_dct)
# Create response to redirect to region summary.
response = HttpResponseRedirect("rgn_smry/")
else:
# Create an instance of class RegionForm.
rgn_form = RegionForm(
initial={"region": abbrv_to_rgn[attr_dct["region"]], "dscrpt_txt": (attr_dct["dscrpt_txt"] == "True")}
)
# Get introductory text from the database and process to html.
intro_text = text_items.get_txt_html("index", "intro_text")
intro_text_1 = text_items.get_txt_html("index", "intro_text_1", replace={"<p>": "", "</p>": "<br /><br />"})
# Load the region summary template.
index_template = loader.get_template("smry/index.html")
context = RequestContext(
request,
{"form": rgn_form, "form_help": rgn_form.form_help, "intro_text": intro_text, "intro_text_1": intro_text_1},
)
response = HttpResponse(index_template.render(context))
return response
def about(request):
"""
about(request)
About view.
"""
# smrylogger.debug("ABOUT VIEW")
html = text_items.get_txt_html("about", "about")
# smrylogger.debug("html: %s", html)
title = "U.S. Land Cover Indicators"
about_template = loader.get_template("smry/about.html")
context = RequestContext(request, {"title": title, "about_text": html})
response = HttpResponse(about_template.render(context))
return response
def rgn_smry(request):
"""
rgn_smry(request)
Regional summary view.
"""
smrylogger.debug("REGIONAL SUMMARY VIEW")
# Set attributes.
attr_dct = site_attr.set_attrs(request, "modis_lnd_cvr")
# Create an instance of class Region_Region_Form.
rgn_form = RegionYearForm_MODIS_LandCover(
initial={"region": attr_dct["region"], "year": attr_dct["year"], "dscrpt_txt": attr_dct["dscrpt_txt"]}
)
if request.method == "POST":
# Create an instance of class RegionYearForm and populate
# with request data.
rgn_form = RegionYearForm_MODIS_LandCover(request.POST)
if rgn_form.is_valid():
# Update attributes.
for key in rgn_form.cleaned_data.keys():
attr_dct[key] = rgn_form.cleaned_data[key]
# 1
smrylogger.debug("1 rgn_smry( )|attr_dct: %s", attr_dct)
# Set attributes in session to dictionary items.
site_attr.set_session_attr(request, attr_dct)
# 2
smrylogger.debug("2 rgn_smry( )|attr_dct: %s", attr_dct)
else:
# 3
smrylogger.debug("3 rgn_smry( )|Warning: rgn_form is invalid")
else:
# Create an instance of class RegionForm.
rgn_form = RegionYearForm_MODIS_LandCover(
initial={"region": attr_dct["region"], "year": attr_dct["year"], "dscrpt_txt": attr_dct["dscrpt_txt"]}
)
if attr_dct["dscrpt_txt"]:
# Get descriptive text from the database.
intro_txt_html = text_items.get_txt_html("rgn_smry", "rgn_smry_intro")
trends_txt_html = text_items.get_txt_html("rgn_smry", "trends", replace=del_p)
vcf_txt_html = text_items.get_txt_html("rgn_smry", "vcf", replace=del_p)
else:
intro_txt_html = ""
trends_txt_html = ""
vcf_txt_html = ""
# Get file name attributes from the database.
# 4
smrylogger.debug("4 rgn_smry( )|attr_dct: %s", attr_dct)
# Expand USA48 to full region name.
if attr_dct["region"] == "USA48":
region_name = name_dcts.abbrv_to_rgn[attr_dct["region"]]
else:
region_name = attr_dct["region"]
rgn_img = RegionImages()
rgn_img.rgn_smry_images(region_name, attr_dct["year"])
# Create distribution table data as a list.
table_list = create_distr_table_list(attr_dct["region"], attr_dct["year"])
# Create request context from attributes.
dct = rgn_img.attr.dct
for key in attr_dct.keys():
dct[key] = attr_dct[key]
dct["width"] = "1030"
dct["rgn_name"] = attr_dct["region"]
dct["intro_txt"] = str(intro_txt_html)
dct["trends_txt"] = str(trends_txt_html)
dct["vcf_txt"] = str(vcf_txt_html)
dct["form"] = rgn_form
dct["form_help"] = rgn_form.form_help
dct["table_list"] = table_list
rgn_img = None
# Load the region summary template.
rgn_template = loader.get_template("smry/rgn_smry.html")
# Create context and render.
context = RequestContext(request, dct)
response = HttpResponse(rgn_template.render(context))
return response