# -*- coding: utf-8 -*- # Part of Odoo. See LICENSE file for full copyright and licensing details. import babel import copy import logging import re from lxml import html from markupsafe import Markup from werkzeug import urls from odoo import _, api, fields, models, tools from odoo.addons.base.models.qweb import QWebCodeFound from odoo.exceptions import UserError, AccessError from odoo.tools import is_html_empty, safe_eval from odoo.tools.rendering_tools import convert_inline_template_to_qweb, parse_inline_template, render_inline_template, template_env_globals _logger = logging.getLogger(__name__) def format_date(env, date, pattern=False, lang_code=False): try: return tools.format_date(env, date, date_format=pattern, lang_code=lang_code) except babel.core.UnknownLocaleError: return date def format_datetime(env, dt, tz=False, dt_format='medium', lang_code=False): try: return tools.format_datetime(env, dt, tz=tz, dt_format=dt_format, lang_code=lang_code) except babel.core.UnknownLocaleError: return dt def format_time(env, time, tz=False, time_format='medium', lang_code=False): try: return tools.format_time(env, time, tz=tz, time_format=time_format, lang_code=lang_code) except babel.core.UnknownLocaleError: return time class MailRenderMixin(models.AbstractModel): _name = 'mail.render.mixin' _description = 'Mail Render Mixin' # If True, we trust the value on the model for rendering # If False, we need the group "Template Editor" to render the model fields _unrestricted_rendering = False # language for rendering lang = fields.Char( 'Language', help="Optional translation language (ISO code) to select when sending out an email. " "If not set, the english version will be used. This should usually be a placeholder expression " "that provides the appropriate language, e.g. {{ object.partner_id.lang }}.") # rendering context render_model = fields.Char("Rendering Model", compute='_compute_render_model', store=False) # expression builder model_object_field = fields.Many2one( 'ir.model.fields', string="Field", store=False, help="Select target field from the related document model.\n" "If it is a relationship field you will be able to select " "a target field at the destination of the relationship.") sub_object = fields.Many2one( 'ir.model', 'Sub-model', readonly=True, store=False, help="When a relationship field is selected as first field, " "this field shows the document model the relationship goes to.") sub_model_object_field = fields.Many2one( 'ir.model.fields', 'Sub-field', store=False, help="When a relationship field is selected as first field, " "this field lets you select the target field within the " "destination document model (sub-model).") null_value = fields.Char('Default Value', store=False, help="Optional value to use if the target field is empty") copyvalue = fields.Char( 'Placeholder Expression', store=False, help="Final placeholder expression, to be copy-pasted in the desired template field.") def _compute_render_model(self): """ Give the target model for rendering. Void by default as models inheriting from ``mail.render.mixin`` should define how to find this model. """ self.render_model = False @api.onchange('model_object_field', 'sub_model_object_field', 'null_value') def _onchange_dynamic_placeholder(self): """ Generate the dynamic placeholder """ if self.model_object_field: if self.model_object_field.ttype in ['many2one', 'one2many', 'many2many']: model = self.env['ir.model']._get(self.model_object_field.relation) if model: self.sub_object = model.id sub_field_name = self.sub_model_object_field.name self.copyvalue = self._build_expression(self.model_object_field.name, sub_field_name, self.null_value or False) else: self.sub_object = False self.sub_model_object_field = False self.copyvalue = self._build_expression(self.model_object_field.name, False, self.null_value or False) else: self.sub_object = False self.copyvalue = False self.sub_model_object_field = False self.null_value = False @api.model def _build_expression(self, field_name, sub_field_name, null_value): """Returns a placeholder expression for use in a template field, based on the values provided in the placeholder assistant. :param field_name: main field name :param sub_field_name: sub field name (M2O) :param null_value: default value if the target value is empty :return: final placeholder expression """ expression = '' if field_name: expression = "{{ object." + field_name if sub_field_name: expression += "." + sub_field_name if null_value: expression += " or '''%s'''" % null_value expression += " }}" return expression # ------------------------------------------------------------ # ORM # ------------------------------------------------------------ def _valid_field_parameter(self, field, name): # allow specifying rendering options directly from field when using the render mixin return name in ['render_engine', 'render_options'] or super()._valid_field_parameter(field, name) @api.model_create_multi def create(self, values_list): record = super().create(values_list) if self._unrestricted_rendering: # If the rendering is unrestricted (e.g. mail.template), # check the user is part of the mail editor group to create a new template if the template is dynamic record._check_access_right_dynamic_template() return record def write(self, vals): super().write(vals) if self._unrestricted_rendering: # If the rendering is unrestricted (e.g. mail.template), # check the user is part of the mail editor group to modify a template if the template is dynamic self._check_access_right_dynamic_template() return True # ------------------------------------------------------------ # TOOLS # ------------------------------------------------------------ def _replace_local_links(self, html, base_url=None): """ Replace local links by absolute links. It is required in various cases, for example when sending emails on chatter or sending mass mailings. It replaces * href of links (mailto will not match the regex) * src of images (base64 hardcoded data will not match the regex) * styling using url like background-image: url It is done using regex because it is shorten than using an html parser to create a potentially complex soupe and hope to have a result that has not been harmed. """ if not html: return html wrapper = Markup if isinstance(html, Markup) else str html = tools.ustr(html) if isinstance(html, Markup): wrapper = Markup def _sub_relative2absolute(match): # compute here to do it only if really necessary + cache will ensure it is done only once # if not base_url if not _sub_relative2absolute.base_url: _sub_relative2absolute.base_url = self.env["ir.config_parameter"].sudo().get_param("web.base.url") return match.group(1) + urls.url_join(_sub_relative2absolute.base_url, match.group(2)) _sub_relative2absolute.base_url = base_url html = re.sub(r"""(]*\ssrc=")(/[^/][^"]+)""", _sub_relative2absolute, html) html = re.sub(r"""(]*\shref=")(/[^/][^"]+)""", _sub_relative2absolute, html) html = re.sub(re.compile( r"""( # Group 1: element up to url in style <[^>]+\bstyle=" # Element with a style attribute [^"]+\burl\( # Style attribute contains "url(" style (?:&\#34;|'|")?) # url style may start with (escaped) quote: capture it ( # Group 2: url itself /(?:[^'")]|(?!&\#34;))+ # stop at the first closing quote )""", re.VERBOSE), _sub_relative2absolute, html) return wrapper(html) @api.model def _render_encapsulate(self, layout_xmlid, html, add_context=None, context_record=None): try: template = self.env.ref(layout_xmlid, raise_if_not_found=True) except ValueError: _logger.warning('QWeb template %s not found when rendering encapsulation template.' % (layout_xmlid)) else: record_name = context_record.display_name if context_record else '' model_description = self.env['ir.model']._get(context_record._name).display_name if context_record else False template_ctx = { 'body': html, 'record_name': record_name, 'model_description': model_description, 'company': context_record['company_id'] if (context_record and 'company_id' in context_record) else self.env.company, 'record': context_record, } if add_context: template_ctx.update(**add_context) html = template._render(template_ctx, engine='ir.qweb', minimal_qcontext=True) html = self.env['mail.render.mixin']._replace_local_links(html) return html @api.model def _prepend_preview(self, html, preview): """ Prepare the email body before sending. Add the text preview at the beginning of the mail. The preview text is displayed bellow the mail subject of most mail client (gmail, outlook...). :param html: html content for which we want to prepend a preview :param preview: the preview to add before the html content :return: html with preprended preview """ if preview: preview = preview.strip() preview_markup = convert_inline_template_to_qweb(preview) if preview: html_preview = Markup("""
{}
""").format(preview_markup) return tools.prepend_html_content(html, html_preview) return html # ------------------------------------------------------------ # SECURITY # ------------------------------------------------------------ def _is_dynamic(self): for template in self.sudo(): for fname, field in template._fields.items(): engine = getattr(field, 'render_engine', 'inline_template') if engine in ('qweb', 'qweb_view'): if self._is_dynamic_template_qweb(template[fname]): return True else: if self._is_dynamic_template_inline_template(template[fname]): return True return False @api.model def _is_dynamic_template_qweb(self, template_src): if template_src: try: node = html.fragment_fromstring(template_src, create_parent='div') self.env["ir.qweb"]._compile(node, options={'raise_on_code': True}) except QWebCodeFound: return True return False @api.model def _is_dynamic_template_inline_template(self, template_txt): if template_txt: template_instructions = parse_inline_template(str(template_txt)) if len(template_instructions) > 1 or template_instructions[0][1]: return True return False def _check_access_right_dynamic_template(self): if not self.env.su and not self.env.user.has_group('mail.group_mail_template_editor') and self._is_dynamic(): group = self.env.ref('mail.group_mail_template_editor') raise AccessError(_('Only users belonging to the "%s" group can modify dynamic templates.', group.name)) # ------------------------------------------------------------ # RENDERING # ------------------------------------------------------------ @api.model def _render_eval_context(self): """ Evaluation context used in all rendering engines. Contains * ``user``: current user browse record; * ``ctx```: current context; * various formatting tools; """ render_context = { 'format_date': lambda date, date_format=False, lang_code=False: format_date(self.env, date, date_format, lang_code), 'format_datetime': lambda dt, tz=False, dt_format=False, lang_code=False: format_datetime(self.env, dt, tz, dt_format, lang_code), 'format_time': lambda time, tz=False, time_format=False, lang_code=False: format_time(self.env, time, tz, time_format, lang_code), 'format_amount': lambda amount, currency, lang_code=False: tools.format_amount(self.env, amount, currency, lang_code), 'format_duration': lambda value: tools.format_duration(value), 'user': self.env.user, 'ctx': self._context, 'is_html_empty': is_html_empty, } render_context.update(copy.copy(template_env_globals)) return render_context @api.model def _render_template_qweb(self, template_src, model, res_ids, add_context=None, options=None): """ Render a raw QWeb template. :param str template_src: raw QWeb template to render; :param str model: see ``MailRenderMixin._render_template()``; :param list res_ids: see ``MailRenderMixin._render_template()``; :param dict add_context: additional context to give to renderer. It allows to add or update values to base rendering context generated by ``MailRenderMixin._render_eval_context()``; :param dict options: options for rendering (not used currently); :return dict: {res_id: string of rendered template based on record} :notice: Experimental. Use at your own risks only. """ results = dict.fromkeys(res_ids, u"") if not template_src: return results # prepare template variables variables = self._render_eval_context() if add_context: variables.update(**add_context) is_restricted = not self._unrestricted_rendering and not self.env.is_admin() and not self.env.user.has_group('mail.group_mail_template_editor') for record in self.env[model].browse(res_ids): variables['object'] = record try: render_result = self.env['ir.qweb']._render( html.fragment_fromstring(template_src, create_parent='div'), variables, raise_on_code=is_restricted, ) # remove the rendered tag
that was added in order to wrap potentially multiples nodes into one. render_result = render_result[5:-6] except QWebCodeFound: group = self.env.ref('mail.group_mail_template_editor') raise AccessError(_('Only users belonging to the "%s" group can modify dynamic templates.', group.name)) except Exception as e: _logger.info("Failed to render template : %s", template_src, exc_info=True) raise UserError(_("Failed to render QWeb template : %s)", e)) results[record.id] = render_result return results @api.model def _render_template_qweb_view(self, template_src, model, res_ids, add_context=None, options=None): """ Render a QWeb template based on an ir.ui.view content. In addition to the generic evaluation context available, some other variables are added: * ``object``: record based on which the template is rendered; :param str template_src: source QWeb template. It should be a string XmlID allowing to fetch an ``ir.ui.view``; :param str model: see ``MailRenderMixin._render_template()``; :param list res_ids: see ``MailRenderMixin._render_template()``; :param dict add_context: additional context to give to renderer. It allows to add or update values to base rendering context generated by ``MailRenderMixin._render_eval_context()``; :param dict options: options for rendering (not used currently); :return dict: {res_id: string of rendered template based on record} """ # prevent wrong values (rendering on a void record set, ...) if any(r is None for r in res_ids): raise ValueError(_('Template rendering should be called on a valid record IDs.')) view = self.env.ref(template_src, raise_if_not_found=False) or self.env['ir.ui.view'] results = dict.fromkeys(res_ids, u"") if not view: return results # prepare template variables variables = self._render_eval_context() if add_context: variables.update(**add_context) safe_eval.check_values(variables) for record in self.env[model].browse(res_ids): variables['object'] = record try: render_result = view._render(variables, engine='ir.qweb', minimal_qcontext=True) except Exception as e: _logger.info("Failed to render template : %s (%d)", template_src, view.id, exc_info=True) raise UserError(_("Failed to render template : %(xml_id)s (%(view_id)d)", xml_id=template_src, view_id=view.id)) results[record.id] = render_result return results @api.model def _render_template_inline_template(self, template_txt, model, res_ids, add_context=None, options=None): """ Render a string-based template on records given by a model and a list of IDs, using inline_template. In addition to the generic evaluation context available, some other variables are added: * ``object``: record based on which the template is rendered; :param str template_txt: template text to render :param str model: see ``MailRenderMixin._render_template()``; :param list res_ids: see ``MailRenderMixin._render_template()``; :param dict add_context: additional context to give to renderer. It allows to add or update values to base rendering context generated by ``MailRenderMixin._render_inline_template_eval_context()``; :param dict options: options for rendering; :return dict: {res_id: string of rendered template based on record} """ # prevent wrong values (rendering on a void record set, ...) if any(r is None for r in res_ids): raise ValueError(_('Template rendering should be called on a valid record IDs.')) results = dict.fromkeys(res_ids, u"") if not template_txt: return results template_instructions = parse_inline_template(str(template_txt)) is_dynamic = len(template_instructions) > 1 or template_instructions[0][1] if (not self._unrestricted_rendering and is_dynamic and not self.env.is_admin() and not self.env.user.has_group('mail.group_mail_template_editor')): group = self.env.ref('mail.group_mail_template_editor') raise AccessError(_('Only users belonging to the "%s" group can modify dynamic templates.', group.name)) if not is_dynamic: # Either the content is a raw text without placeholders, either we fail to # detect placeholders code. In both case we skip the rendering and return # the raw content, so even if we failed to detect dynamic code, # non "mail_template_editor" users will not gain rendering tools available # only for template specific group users return {record_id: template_instructions[0][0] for record_id in res_ids} # prepare template variables variables = self._render_eval_context() if add_context: variables.update(**add_context) for record in self.env[model].browse(res_ids): variables['object'] = record try: results[record.id] = render_inline_template(template_instructions, variables) except Exception as e: _logger.info("Failed to render inline_template: \n%s", str(template_txt), exc_info=True) raise UserError(_("Failed to render inline_template template : %s)", e)) return results @api.model def _render_template_postprocess(self, rendered): """ Tool method for post processing. In this method we ensure local links ('/shop/Basil-1') are replaced by global links ('https://www. mygarden.com/shop/Basil-1'). :param rendered: result of ``_render_template``; :return dict: updated version of rendered per record ID; """ for res_id, rendered_html in rendered.items(): rendered[res_id] = self._replace_local_links(rendered_html) return rendered @api.model def _render_template(self, template_src, model, res_ids, engine='inline_template', add_context=None, options=None, post_process=False): """ Render the given string on records designed by model / res_ids using the given rendering engine. Possible engine are small_web, qweb, or qweb_view. :param str template_src: template text to render or xml id of a qweb view; :param str model: model name of records on which we want to perform rendering (aka 'crm.lead'); :param list res_ids: list of ids of records. All should belong to the Odoo model given by model; :param string engine: inline_template, qweb or qweb_view; :param dict add_context: additional context to give to renderer. It allows to add or update values to base rendering context generated by ``MailRenderMixin._render__eval_context()``; :param dict options: options for rendering; :param boolean post_process: perform a post processing on rendered result (notably html links management). See``_render_template_postprocess``; :return dict: {res_id: string of rendered template based on record} """ if not isinstance(res_ids, (list, tuple)): raise ValueError(_('Template rendering should be called only using on a list of IDs.')) if engine not in ('inline_template', 'qweb', 'qweb_view'): raise ValueError(_('Template rendering supports only inline_template, qweb, or qweb_view (view or raw).')) if engine == 'qweb_view': rendered = self._render_template_qweb_view(template_src, model, res_ids, add_context=add_context, options=options) elif engine == 'qweb': rendered = self._render_template_qweb(template_src, model, res_ids, add_context=add_context, options=options) else: rendered = self._render_template_inline_template(template_src, model, res_ids, add_context=add_context, options=options) if post_process: rendered = self._render_template_postprocess(rendered) return rendered def _render_lang(self, res_ids, engine='inline_template'): """ Given some record ids, return the lang for each record based on lang field of template or through specific context-based key. Lang is computed by performing a rendering on res_ids, based on self.render_model. :param list res_ids: list of ids of records. All should belong to the Odoo model given by model; :param string engine: inline_template or qweb_view; :return dict: {res_id: lang code (i.e. en_US)} """ self.ensure_one() if not isinstance(res_ids, (list, tuple)): raise ValueError(_('Template rendering for language should be called with a list of IDs.')) rendered_langs = self._render_template(self.lang, self.render_model, res_ids, engine=engine) return dict( (res_id, lang) for res_id, lang in rendered_langs.items() ) def _classify_per_lang(self, res_ids, engine='inline_template'): """ Given some record ids, return for computed each lang a contextualized template and its subset of res_ids. :param list res_ids: list of ids of records (all belonging to same model defined by self.render_model) :param string engine: inline_template, qweb, or qweb_view; :return dict: {lang: (template with lang=lang_code if specific lang computed or template, res_ids targeted by that language} """ self.ensure_one() if self.env.context.get('template_preview_lang'): lang_to_res_ids = {self.env.context['template_preview_lang']: res_ids} else: lang_to_res_ids = {} for res_id, lang in self._render_lang(res_ids, engine=engine).items(): lang_to_res_ids.setdefault(lang, []).append(res_id) return dict( (lang, (self.with_context(lang=lang) if lang else self, lang_res_ids)) for lang, lang_res_ids in lang_to_res_ids.items() ) def _render_field(self, field, res_ids, engine='inline_template', compute_lang=False, set_lang=False, add_context=None, options=None, post_process=False): """ Given some record ids, render a template located on field on all records. ``field`` should be a field of self (i.e. ``body_html`` on ``mail.template``). res_ids are record IDs linked to ``model`` field on self. :param field: a field name existing on self; :param list res_ids: list of ids of records (all belonging to same model defined by ``self.render_model``) :param string engine: inline_template, qweb, or qweb_view; :param boolean compute_lang: compute language to render on translated version of the template instead of default (probably english) one. Language will be computed based on ``self.lang``; :param string set_lang: force language for rendering. It should be a valid lang code matching an activate res.lang. Checked only if ``compute_lang`` is False; :param dict add_context: additional context to give to renderer; :param dict options: options for rendering; :param boolean post_process: perform a post processing on rendered result (notably html links management). See``_render_template_postprocess``); :return dict: {res_id: string of rendered template based on record} """ if options is None: options = {} self.ensure_one() if compute_lang: templates_res_ids = self._classify_per_lang(res_ids) elif set_lang: templates_res_ids = {set_lang: (self.with_context(lang=set_lang), res_ids)} else: templates_res_ids = {self._context.get('lang'): (self, res_ids)} # rendering options engine = getattr(self._fields[field], 'render_engine', engine) options.update(**getattr(self._fields[field], 'render_options', {})) post_process = options.get('post_process') or post_process return dict( (res_id, rendered) for lang, (template, tpl_res_ids) in templates_res_ids.items() for res_id, rendered in template._render_template( template[field], template.render_model, tpl_res_ids, engine=engine, add_context=add_context, options=options, post_process=post_process ).items() )