/// <summary>
/// Renders the specified context.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="result">The result.</param>
public override void OnRender(ILavaRenderContext context, TextWriter result)
{
var engine = context.GetService <ILavaEngine>();
var tags = engine.GetRegisteredElements();
if (!tags.Any())
{
return;
}
var tagList = new StringBuilder();
tagList.Append("<strong>Lava Tag List</strong>");
tagList.Append("<ul>");
foreach (var kvp in tags.OrderBy(t => t.Key))
{
var tag = kvp.Value;
var tagName = LavaUtilityHelper.GetShortcodeNameFromLiquidElementName(tag.Name);
tagList.Append($"<li>{tagName} - {tag.SystemTypeName}</li>");
}
tagList.Append("</ul>");
result.Write(tagList.ToString());
base.OnRender(context, result);
}
/// <summary>
/// Merges the lava.
/// </summary>
/// <param name="lavaTemplate">The lava template.</param>
/// <param name="context">The context.</param>
/// <returns></returns>
private string MergeLava(string lavaTemplate, ILavaRenderContext context)
{
// Resolve the Lava template contained in this block in a new context.
var engine = context.GetService <ILavaEngine>();
var newContext = engine.NewRenderContext();
newContext.SetMergeFields(context.GetMergeFields());
newContext.SetInternalFields(context.GetInternalFields());
// Resolve the inner template.
var result = engine.RenderTemplate(lavaTemplate, LavaRenderParameters.WithContext(newContext));
return(result.Text);
}
/// <summary>
/// Processes the Lava code in the source string.
/// </summary>
/// <param name="input">The lava source to process.</param>
/// <example><![CDATA[
/// {% capture lava %}{% raw %}{% assign test = "hello" %}{{ test }}{% endraw %}{% endcapture %}
/// {{ lava | RunLava }}
/// ]]></example>
public static string RunLava(ILavaRenderContext context, object input)
{
if (input == null)
{
return(null);
}
// Perform a safety check to avoid an unrecoverable recursion.
// To minimize the resource impact of an unintentional infinite loop, this mechanism could be replaced with more specific recursion tracking in the Lava context.
System.Runtime.CompilerServices.RuntimeHelpers.EnsureSufficientExecutionStack();
var engine = context.GetService <ILavaEngine>();
var result = engine.RenderTemplate(input.ToString(), new LavaRenderParameters {
Context = context
});
return(result.Text);
}
/// <summary>
/// Renders the specified context.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="result">The result.</param>
public override void OnRender(ILavaRenderContext context, TextWriter result)
{
var rockContext = LavaHelper.GetRockContextFromLavaContext(context);
// Get enabled security commands
_enabledSecurityCommands = context.GetEnabledCommands().JoinStrings(",");
using (TextWriter writer = new StringWriter())
{
bool filterProvided = false;
base.OnRender(context, writer);
var parms = ParseMarkup(_markup, context);
var lookAheadDays = parms[LOOK_AHEAD_DAYS].AsInteger();
var scheduleCategoryId = parms[SCHEDULE_CATEGORY_ID].AsIntegerOrNull();
var asAtDate = parms[AS_AT_DATE].AsDateTime();
var now = asAtDate ?? RockDateTime.Now;
var scheduleIds = new List <int>();
var requestedSchedules = parms[SCHEDULE_ID].StringToIntList();
var schedulesQry = new ScheduleService(rockContext).Queryable().AsNoTracking()
.Where(s => s.IsActive == true);
if (requestedSchedules.Count() > 0)
{
schedulesQry = schedulesQry.Where(s => requestedSchedules.Contains(s.Id));
filterProvided = true;
}
if (scheduleCategoryId.HasValue)
{
schedulesQry = schedulesQry.Where(s => s.CategoryId == scheduleCategoryId.Value);
filterProvided = true;
}
// If neither a schedule id nor a schedule category id was provided stop
if (!filterProvided)
{
return;
}
// Get the schedules are order them by the next start time
var schedules = schedulesQry.ToList()
.Where(s => s.GetNextStartDateTime(now) != null)
.OrderBy(s => s.GetNextStartDateTime(now));
if (schedules.Count() == 0)
{
return;
}
var nextSchedule = schedules.FirstOrDefault();
var nextStartDateTime = nextSchedule.GetNextStartDateTime(now);
var isLive = false;
DateTime?occurrenceEndDateTime = null;
// Determine if we're live
if (nextSchedule.WasScheduleActive(now))
{
isLive = true;
var occurrences = nextSchedule.GetICalOccurrences(now, now.AddDays(lookAheadDays)).Take(2);
var activeOccurrence = occurrences.FirstOrDefault();
occurrenceEndDateTime = (DateTime)activeOccurrence.Period.EndTime.Value;
// Set the next occurrence to be the literal next occurrence (vs the current occurrence)
nextStartDateTime = null;
if (occurrences.Count() > 1)
{
nextStartDateTime = occurrences.Last().Period.EndTime.Value;
}
}
// Determine when not to show the content
if ((parms[SHOW_WHEN] == "notlive" && isLive) ||
(parms[SHOW_WHEN] == "live" && !isLive))
{
return;
}
// Check role membership
var roleId = parms[ROLE_ID].AsIntegerOrNull();
if (roleId.HasValue)
{
var currentPerson = GetCurrentPerson(context);
var isInRole = new GroupMemberService(rockContext).Queryable()
.Where(m =>
m.GroupId == roleId &&
m.PersonId == currentPerson.Id
)
.Any();
if (!isInRole)
{
return;
}
}
var mergeFields = context.GetMergeFields();
mergeFields.Add("NextOccurrenceDateTime", nextStartDateTime);
mergeFields.Add("OccurrenceEndDateTime", occurrenceEndDateTime);
mergeFields.Add("Schedule", nextSchedule);
mergeFields.Add("IsLive", isLive);
var engine = context.GetService <ILavaEngine>();
var renderContext = engine.NewRenderContext(mergeFields, _enabledSecurityCommands.SplitDelimitedValues());
var results = engine.RenderTemplate(_blockMarkup.ToString(), LavaRenderParameters.WithContext(renderContext));
result.Write(results.Text.Trim());
}
}
