100 lines
3.4 KiB
Python
100 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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# Part of Odoo, Flectra. See LICENSE file for full copyright and licensing details.
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import base64
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import json
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from ast import literal_eval
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from flectra import models, fields, api
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class pos_cache(models.Model):
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_name = 'pos.cache'
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cache = fields.Binary(attachment=True)
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product_domain = fields.Text(required=True)
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product_fields = fields.Text(required=True)
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config_id = fields.Many2one('pos.config', ondelete='cascade', required=True)
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compute_user_id = fields.Many2one('res.users', 'Cache compute user', required=True)
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@api.model
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def refresh_all_caches(self):
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self.env['pos.cache'].search([]).refresh_cache()
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@api.one
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def refresh_cache(self):
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Product = self.env['product.product'].sudo(self.compute_user_id.id)
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products = Product.search(self.get_product_domain())
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prod_ctx = products.with_context(pricelist=self.config_id.pricelist_id.id, display_default_code=False,
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lang=self.compute_user_id.lang)
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res = prod_ctx.read(self.get_product_fields())
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datas = {
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'cache': base64.encodestring(json.dumps(res).encode('utf-8')),
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}
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self.write(datas)
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@api.model
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def get_product_domain(self):
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return literal_eval(self.product_domain)
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@api.model
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def get_product_fields(self):
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return literal_eval(self.product_fields)
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@api.model
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def get_cache(self, domain, fields):
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if not self.cache or domain != self.get_product_domain() or fields != self.get_product_fields():
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self.product_domain = str(domain)
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self.product_fields = str(fields)
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self.refresh_cache()
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return json.loads(base64.decodestring(self.cache).decode('utf-8'))
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class pos_config(models.Model):
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_inherit = 'pos.config'
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@api.one
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@api.depends('cache_ids')
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def _get_oldest_cache_time(self):
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pos_cache = self.env['pos.cache']
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oldest_cache = pos_cache.search([('config_id', '=', self.id)], order='write_date', limit=1)
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if oldest_cache:
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self.oldest_cache_time = oldest_cache.write_date
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# Use a related model to avoid the load of the cache when the pos load his config
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cache_ids = fields.One2many('pos.cache', 'config_id')
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oldest_cache_time = fields.Datetime(compute='_get_oldest_cache_time', string='Oldest cache time', readonly=True)
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def _get_cache_for_user(self):
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pos_cache = self.env['pos.cache']
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cache_for_user = pos_cache.search([('id', 'in', self.cache_ids.ids), ('compute_user_id', '=', self.env.uid)])
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if cache_for_user:
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return cache_for_user[0]
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else:
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return None
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@api.multi
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def get_products_from_cache(self, fields, domain):
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cache_for_user = self._get_cache_for_user()
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if cache_for_user:
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return cache_for_user.get_cache(domain, fields)
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else:
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pos_cache = self.env['pos.cache']
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pos_cache.create({
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'config_id': self.id,
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'product_domain': str(domain),
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'product_fields': str(fields),
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'compute_user_id': self.env.uid
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})
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new_cache = self._get_cache_for_user()
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return new_cache.get_cache(domain, fields)
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@api.one
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def delete_cache(self):
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# throw away the old caches
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self.cache_ids.unlink()
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