fix: add grid filter for animal birthdate

src/wuttafarm/web/grids.py

@@ -23,6 +23,8 @@
 Custom grid stuff for use with farmOS / JSONAPI
 """
 
+import datetime
+
 from wuttaweb.grids.filters import GridFilter
 
 
@@ -35,12 +37,12 @@ class SimpleFilter(GridFilter):
         self.path = path or key
 
     def filter_equal(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, "=", value)
         return data
 
     def filter_not_equal(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, "<>", value)
         return data
 
@@ -58,7 +60,7 @@ class StringFilter(SimpleFilter):
     default_verbs = ["contains", "equal", "not_equal"]
 
     def filter_contains(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, "CONTAINS", value)
         return data
 
@@ -80,22 +82,22 @@ class IntegerFilter(SimpleFilter):
     ]
 
     def filter_less_than(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, "<", value)
         return data
 
     def filter_less_equal(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, "<=", value)
         return data
 
     def filter_greater_than(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, ">", value)
         return data
 
     def filter_greater_equal(self, data, value):
-        if value:
+        if value := self.coerce_value(value):
             data.add_filter(self.path, ">=", value)
         return data
 
@@ -123,6 +125,88 @@ class NullableBooleanFilter(BooleanFilter):
     default_verbs = ["is_true", "is_false", "is_null", "is_not_null"]
 
 
+# TODO: this may not work, it's not used anywhere yet
+class DateFilter(SimpleFilter):
+
+    data_type = "date"
+
+    default_verbs = [
+        "equal",
+        "not_equal",
+        "greater_than",
+        "greater_equal",
+        "less_than",
+        "less_equal",
+        # 'between',
+    ]
+
+    default_verb_labels = {
+        "equal": "on",
+        "not_equal": "not on",
+        "greater_than": "after",
+        "greater_equal": "on or after",
+        "less_than": "before",
+        "less_equal": "on or before",
+        # "between": "between",
+        "is_null": "is null",
+        "is_not_null": "is not null",
+        "is_any": "is any",
+    }
+
+    def coerce_value(self, value):
+        if value:
+            if isinstance(value, datetime.date):
+                return value
+
+            try:
+                dt = datetime.datetime.strptime(value, "%Y-%m-%d")
+            except ValueError:
+                log.warning("invalid date value: %s", value)
+            else:
+                return dt.date()
+
+        return None
+
+
+# TODO: this is not very complete yet, so far used only for animal birthdate
+class DateTimeFilter(DateFilter):
+
+    default_verbs = ["equal", "is_null", "is_not_null"]
+
+    def coerce_value(self, value):
+        """
+        Convert user input to a proper ``datetime.date`` object.
+        """
+        if value:
+            if isinstance(value, datetime.date):
+                return value
+
+            try:
+                dt = datetime.datetime.strptime(value, "%Y-%m-%d")
+            except ValueError:
+                log.warning("invalid date value: %s", value)
+            else:
+                return dt.date()
+
+        return None
+
+    def filter_equal(self, data, value):
+        if value := self.coerce_value(value):
+
+            start = datetime.datetime.combine(value, datetime.time(0))
+            start = self.app.localtime(start, from_utc=False)
+
+            stop = datetime.datetime.combine(
+                value + datetime.timedelta(days=1), datetime.time(0)
+            )
+            stop = self.app.localtime(stop, from_utc=False)
+
+            data.add_filter(self.path, ">=", int(start.timestamp()))
+            data.add_filter(self.path, "<", int(stop.timestamp()))
+
+        return data
+
+
 class SimpleSorter:
 
     def __init__(self, key):
@@ -171,10 +255,13 @@ class ResourceData:
         if self._data is None:
             params = {}
 
+            i = 0
             for path, operator, value in self.filters:
-                params[f"filter[{path}][condition][path]"] = path
-                params[f"filter[{path}][condition][operator]"] = operator
-                params[f"filter[{path}][condition][value]"] = value
+                i += 1
+                key = f"{i:03d}"
+                params[f"filter[{key}][condition][path]"] = path
+                params[f"filter[{key}][condition][operator]"] = operator
+                params[f"filter[{key}][condition][value]"] = value
 
             sorters = []
             for path, sortdir in self.sorters:

src/wuttafarm/web/views/farmos/animals.py

@@ -37,6 +37,7 @@ from wuttafarm.web.grids import (
     StringFilter,
     BooleanFilter,
     NullableBooleanFilter,
+    DateTimeFilter,
 )
 from wuttafarm.web.forms.schema import AnimalTypeType
 
@@ -120,6 +121,7 @@ class AnimalView(AssetMasterView):
         # birthdate
         g.set_renderer("birthdate", "date")
         g.set_sorter("birthdate", SimpleSorter("birthdate"))
+        g.set_filter("birthdate", DateTimeFilter)
 
         # sex
         g.set_enum("sex", enum.ANIMAL_SEX)