vieter/src/models/models.v

54 lines
1.5 KiB
V

module models
import time
// from_params[T] creates a new instance of T from the given map by parsing all
// of its fields from the map.
pub fn from_params[T](params map[string]string) ?T {
mut o := T{}
patch_from_params[T](mut o, params)?
return o
}
// patch_from_params[T] updates the given T object with the params defined in
// the map.
pub fn patch_from_params[T](mut o T, params map[string]string) ? {
$for field in T.fields {
if field.name in params && params[field.name] != '' {
$if field.typ is string {
o.$(field.name) = params[field.name]
} $else $if field.typ is int {
o.$(field.name) = params[field.name].int()
} $else $if field.typ is u64 {
o.$(field.name) = params[field.name].u64()
} $else $if field.typ is []TargetArch {
o.$(field.name) = params[field.name].split(',').map(TargetArch{ value: it })
} $else $if field.typ is time.Time {
o.$(field.name) = time.unix(params[field.name].int())
} $else $if field.typ is []string {
o.$(field.name) = params[field.name].split(',')
}
} else if field.attrs.contains('nonull') {
return error('Missing parameter: ${field.name}.')
}
}
}
// params_from[T] converts a given T struct into a map of strings.
pub fn params_from[T](o &T) map[string]string {
mut out := map[string]string{}
$for field in T.fields {
$if field.typ is time.Time {
out[field.name] = o.$(field.name).unix_time().str()
} $else $if field.typ is []string {
out[field.name] = o.$(field.name).join(',')
} $else {
out[field.name] = o.$(field.name).str()
}
}
return out
}