61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
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# MIT License. See license.txt
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from __future__ import unicode_literals
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import frappe
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# select doctypes that are accessed by the user (not read_only) first, so that the
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# the validation message shows the user-facing doctype first.
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# For example Journal Entry should be validated before GL Entry (which is an internal doctype)
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dynamic_link_queries = [
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"""select `tabDocField`.parent,
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`tabDocType`.read_only, `tabDocType`.in_create,
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`tabDocField`.fieldname, `tabDocField`.options
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from `tabDocField`, `tabDocType`
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where `tabDocField`.fieldtype='Dynamic Link' and
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`tabDocType`.`name`=`tabDocField`.parent
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order by `tabDocType`.read_only, `tabDocType`.in_create""",
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"""select `tabCustom Field`.dt as parent,
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`tabDocType`.read_only, `tabDocType`.in_create,
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`tabCustom Field`.fieldname, `tabCustom Field`.options
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from `tabCustom Field`, `tabDocType`
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where `tabCustom Field`.fieldtype='Dynamic Link' and
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`tabDocType`.`name`=`tabCustom Field`.dt
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order by `tabDocType`.read_only, `tabDocType`.in_create""",
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]
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def get_dynamic_link_map(for_delete=False):
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'''Build a map of all dynamically linked tables. For example,
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if Note is dynamically linked to ToDo, the function will return
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`{"Note": ["ToDo"], "Sales Invoice": ["Journal Entry Detail"]}`
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Note: Will not map single doctypes
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'''
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if getattr(frappe.local, 'dynamic_link_map', None)==None or frappe.flags.in_test:
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# Build from scratch
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dynamic_link_map = {}
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for df in get_dynamic_links():
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meta = frappe.get_meta(df.parent)
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if meta.issingle:
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# always check in Single DocTypes
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dynamic_link_map.setdefault(meta.name, []).append(df)
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else:
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try:
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links = frappe.db.sql_list("""select distinct {options} from `tab{parent}`""".format(**df))
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for doctype in links:
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dynamic_link_map.setdefault(doctype, []).append(df)
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except frappe.db.TableMissingError: # noqa: E722
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pass
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frappe.local.dynamic_link_map = dynamic_link_map
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return frappe.local.dynamic_link_map
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def get_dynamic_links():
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'''Return list of dynamic link fields as DocField.
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Uses cache if possible'''
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df = []
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for query in dynamic_link_queries:
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df += frappe.db.sql(query, as_dict=True)
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return df
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