def generate_view_page(path, macro_id, host_url, save_values={}):
'''
Generate a macro view page. Returns None on error.
Propogates exceptions up.
'''
ret_page = None
# Make sure we got valid input.
if not macro_id: raise NoInputError("You entered an invalid macro ID. Try again?")
# Ensure we have a saved macro. Will throw exception on fail.
saved_macro = SavedMacroOps(macro_id)
# View pages are extremely heavy, and the majority of their
# data doesn't change. Use helper to handle this.
macro_form_template_values = get_view_dict_from_macro_id(macro_id, saved_macro)
# Add in edit and view links.
# Add in the author link.
# Add in the form ids.
page_values = {'macro_link' : '%s/%s' % (host_url,
macro_id),
'macro_edit' : '%s?%s=%s' % (host_url,
GET_MACRO_LINK,
macro_id),
'author' : _format_author(saved_macro.entity.name,
saved_macro.entity.server),
'send_email' : FORM_MACRO_EMAIL,
'send_input_form' : FORM_EMAIL_INPUT,
'to' : FORM_EMAIL_TO,
'from' : FORM_EMAIL_FROM,
}
macro_form_template_values.update(page_values)
# Generate the dynamic parts of the page:
# 1. Increment the view counter on this macro.
# 2. Get the rating in terms of stars for this macro.
dynamic_page_vals = {
'stars' : [i + 1 for i in range(MAX_RATING)],
'num_rates' : saved_macro.entity.num_rates,
'views' : saved_macro.add_to_view_count(),
'rating' : saved_macro.get_rating_dict(saved_macro.get_rating()),
}
macro_form_template_values.update(dynamic_page_vals)
# Is this another save attempt after errors? If so, update
# with errors and previous values.
macro_form_template_values.update(save_values)
# Call helper to interpret the macro behind the id.
macro_obj = get_macro_obj_from_id(macro_id, saved_macro.entity.macro)
# Populate the templace with the processed macro.
macro_form_template_values['processed_macro_html'] = \
render_macro(macro_obj, path)
# Get the copy and paste form of the macro
macro_form_template_values['copy_paste'] = \
_render_copy_cmd(macro_obj)
# Render the macro view template html.
ret_page = render_template('view.template',
macro_form_template_values,
path)
return render_template('base.template',
{'content': ret_page},
path)
