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(core) Preserve configured choices when converting between Choice and ChoiceList types.

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Summary:
For conversions between Choice and ChoiceList, it makes more sense to preserve
the list of choices than to re-parse it from data.

Reported by Anais. Creating Choices from parsing ChoiceList cell values was
particularly poor, resulting in choices like "L,Foo,Bar".

Test Plan: Added a test case

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2819
This commit is contained in:
Dmitry S 2021-05-18 01:01:53 -04:00
parent 5f182841b9
commit 8c2f0307e5
1 changed files with 29 additions and 18 deletions
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47
app/client/components/TypeConversion.ts
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@ -80,31 +80,42 @@ export async function prepTransformColInfo(docModel: DocModel, origCol: ColumnRe
formula: "", // Will be filled in at the end.
};
const prevOptions = origCol.widgetOptionsJson.peek() || {};
switch (toType) {
case 'Choice': {
// Set suggested choices. Limit to 100, since too many choices is more likely to cause
// trouble than desired behavior. For many choices, recommend using a Ref to helper table.
const columnData = tableData.getDistinctValues(origCol.colId(), 100);
if (columnData) {
columnData.delete("");
widgetOptions = {choices: Array.from(columnData, String)};
if (Array.isArray(prevOptions.choices)) {
// Use previous choices if they are set, e.g. if converting from ChoiceList
widgetOptions = {choices: prevOptions.choices};
} else {
// Set suggested choices. Limit to 100, since too many choices is more likely to cause
// trouble than desired behavior. For many choices, recommend using a Ref to helper table.
const columnData = tableData.getDistinctValues(origCol.colId(), 100);
if (columnData) {
columnData.delete("");
widgetOptions = {choices: Array.from(columnData, String)};
}
}
break;
}
case 'ChoiceList': {
// Set suggested choices. This happens before the conversion to ChoiceList, so we do some
// light guessing for likely choices to suggest.
const choices = new Set<string>();
for (let value of tableData.getColValues(origCol.colId()) || []) {
value = String(value).trim();
const tags: string[] = (value.startsWith('[') && gutil.safeJsonParse(value, null)) || value.split(",");
for (const tag of tags) {
choices.add(tag.trim());
if (choices.size > 100) { break; } // Don't suggest excessively many choices.
if (Array.isArray(prevOptions.choices)) {
// Use previous choices if they are set, e.g. if converting from ChoiceList
widgetOptions = {choices: prevOptions.choices};
} else {
// Set suggested choices. This happens before the conversion to ChoiceList, so we do some
// light guessing for likely choices to suggest.
const choices = new Set<string>();
for (let value of tableData.getColValues(origCol.colId()) || []) {
value = String(value).trim();
const tags: string[] = (value.startsWith('[') && gutil.safeJsonParse(value, null)) || value.split(",");
for (const tag of tags) {
choices.add(tag.trim());
if (choices.size > 100) { break; } // Don't suggest excessively many choices.
}
}
choices.delete("");
widgetOptions = {choices: Array.from(choices)};
}
choices.delete("");
widgetOptions = {choices: Array.from(choices)};
break;
}
case 'Ref': {
@ -170,7 +181,7 @@ export function getDefaultFormula(
`$${colId}`;
if (origCol.type.peek() === 'ChoiceList') {
origValFormula = `grist.ChoiceList.toString($${colId})`
origValFormula = `grist.ChoiceList.toString($${colId})`;
}
const toTypePure: string = gristTypes.extractTypeFromColType(newType);