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Merge pull request #344 from vabenil/one_to_many_handle_empty_str 

One to many handle empty str
This commit is contained in:
Adam D. Ruppe 2022-11-09 11:11:56 -05:00 committed by GitHub
parent 760880e87f f0d649300c
commit 06a6a62b27
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1 changed files with 16 additions and 15 deletions
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31
database_generation.d
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@ -920,30 +920,29 @@ string toFieldName(T)(string s, bool isPlural = false)
}
---
if t2 or t1 are set as null they will be inferred from either
the `DBName` attribute or from the name of the Table
if t2 or t1 are set as "" the get function will not be generated
(the name will not be inferred), if set as null they will be inferred from
either the `DBName` attribute or from the name of the Table.
History:
Added November 5, 2022 (dub v10.10)
+/
template one_to_many(alias fk_field, string t2 = null, string t1 = null)
{
private {
alias T1 = __traits(parent, fk_field);
alias T1 = __traits(parent, fk_field);
static assert(
isFieldRefInAttributes!(__traits(getAttributes, fk_field)),
T1.stringof ~ "." ~ fk_field.stringof ~ " does't have a ForeignKey");
static assert(
isFieldRefInAttributes!(__traits(getAttributes, fk_field)),
T1.stringof ~ "." ~ fk_field.stringof ~ " does't have a ForeignKey");
alias FieldRef = getRefToField!(fk_field);
alias T2 = FieldRef.Table;
alias ref_field = FieldRef.field;
alias FieldRef = getRefToField!(fk_field);
alias T2 = FieldRef.Table;
alias ref_field = FieldRef.field;
immutable string t2_name = toFieldName!T2(t2);
immutable string t1_name = toFieldName!T1(t1, true);
}
immutable string t2_name = toFieldName!T2(t2);
immutable string t1_name = toFieldName!T1(t1, true);
static immutable string one_to_many =
static immutable string one = (t2 is "") ? "" :
T2.stringof~` get_`~t2_name~`(`~T1.stringof~` row, Database db)
{
import std.exception;
@ -957,7 +956,8 @@ template one_to_many(alias fk_field, string t2 = null, string t1 = null)
).to_table_rows!`~T2.stringof~`;
return res.front();
}
}`;
static immutable string many = (t1 is "") ? "" : `
TabResultSet!`~T1.stringof~` get_`~t1_name~`(`~T2.stringof~` row, Database db)
{
import std.exception;
@ -972,4 +972,5 @@ template one_to_many(alias fk_field, string t2 = null, string t1 = null)
return res;
}`;
static immutable string one_to_many = one ~ many;
}