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refactor: `frappe.db.exists`

version-14
barredterra 3 yıl önce
ebeveyn
işleme
861ff16ac8
1 değiştirilmiş dosya ile 31 ekleme ve 19 silme
  1. +31
    -19
      frappe/database/database.py

+ 31
- 19
frappe/database/database.py Dosyayı Görüntüle

@@ -884,27 +884,39 @@ class Database(object):
return self.sql("select name from `tab{doctype}` limit 1".format(doctype=doctype))

def exists(self, dt, dn=None, cache=False):
"""Returns true if document exists.
"""Return the document name of a matching document, or None.

:param dt: DocType name.
:param dn: Document name or filter dict."""
if isinstance(dt, str):
if dt!="DocType" and dt==dn:
return True # single always exists (!)
try:
return self.get_value(dt, dn, "name", cache=cache)
except Exception:
return None
Note: `cache` only works if `dt` and `dn` are of type `str`.

elif isinstance(dt, dict) and dt.get('doctype'):
try:
conditions = []
for d in dt:
if d == 'doctype': continue
conditions.append([d, '=', dt[d]])
return self.get_all(dt['doctype'], filters=conditions, as_list=1)
except Exception:
return None
## Examples

Pass doctype and docname (only in this case we can cache the result)

```
exists("User", "jane@example.org", cache=True)
```

Pass a dict of filters including the `"doctype"` key:

```
exists({"doctype": "User", "full_name": "Jane Doe"})
```

Pass the doctype and a dict of filters:

```
exists("User", {"full_name": "Jane Doe"})
```
"""
if dt == dn:
# single always exists (!)
return dn

if isinstance(dt, dict):
_dt = dt.pop("doctype")
dt, dn = _dt, dt

return self.get_value(dt, dn, ignore=True, cache=cache)

def count(self, dt, filters=None, debug=False, cache=False):
"""Returns `COUNT(*)` for given DocType and filters."""


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